Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107
Edition: Model Aviation - 1989/04
Page Numbers: 38, 39, 40, 41, 142, 143, 146, 147, 148
Left Our author decided scratch-build Hots model using aileron servo also modified original design wing could removed wing now held two -in nylon bolts Aileron servo lead exits through wing bottom Right Two 4-40 screws blind nuts hold hatch place Overall its slightly corpulent original Another mod would add cowl Above A disguised Super Kaos Mods include conversion talldragger longer wingspan turtledeck bubble canopy Reshap ing rudder has everyone asking What especially see performance its 05 ABC 61 Master Air screw 11 x 7 prop goes vertical immediately after breaking ground Right modified Super Kaos wing 1-In longer stock accommodate retract servo 1 Note unusual mount author used on-end position sits wing Left The socially upgraded Super Stick has its spinal cord wigwammed over now sports bolt-on wings strap main gear gether mods help take away models original ultra-light look Right servo mount Super Stick made U-shaped piece %rin ply Base U glues directly center ilb under/over attachment pushrods results very compact installation youre people can never just leave things alone can appreciate authors approach modeling youre accustomed modifying kits better suit needs read modifying bug might just bite 38 Model Aviation WHEN THERES something dont like about device kit design modify conform individual custom have power ideas imaginuity experienceas well personal interest thats compli cated commercial ties qualifies make individualized re visions customized modifications custom mods short Theres bit maverick us Perfection ideal thats approached various angles seldom arrived agreed upon Whats perfection rel ative special situations Consider ex ample controversy over landing gear configuration tri-gear tail-dragger best clubs flying field has single grass runway regularly blitzed direct crosswinds situation experience tail-draggers take off great er reliability tn-gear types Thats say Im unfamiliar proper technique getting afidi-size plane off runway Having piloted Beech Bo nanza 1000 hours some years ago know correct maneuvers heart aile rons down upwind wing steer along run way center hold nose down hard un til moment rotation Thats fine 1500-lb airplaneespecially would never entrust other hard-surfaced runways too often though its fine models blustery hand strikes unwary birds tipping upwind wing across axis nose wheel downwind main gear sending prop sod viscosity stall its experience youd rather repeat What kit design youve chosen has wrong landing gear setup Elementary dear Watson build way Sherlock did recently Super Kaos flew Nats hes presently re peating procedure superbly kitted MK Aurora Theres added advantage tail-draggers model planned sport retracts less mechanism servo cluttering fuselage belly can hear outcry Scale buffs already Read onyou might like next idea During earlier phase RC appren ticeship Super Kaos might say succumbed sunstroke honesty thats skewing story just little fa vor really went like dumb pilot contracted case ocular solar radiation whiteout just few seconds too long consequences swift merci less debacle could least partly blamed difficult-to-track silhouette dear departeda conventional Kaos has back unrealistically flat looks just like its belly correct problem turtledecked next production number also added leftover canopy shortchanged Sig Kavalier accompanyApril 1989 39 authors unpatented tail wheel Mark lii keeps rear end 79-in span Laser draging Details shown sketch Ground handling exceptional prototypes have 100 hts no failures switch mount s mock-up photo purposes Sheet slider wheel collars pushrod center-drilled piece doweiwhat could simpler inherent friction between A-in wire drilled-out dowel prevents inadvertent switch operation vibration ing photo shows make-over concocted other mod Kaos II Since plans dont detail install retracts devised own scheme doing Rather cut center wing ribs mount retract servo added couple ply dihedral braces elon gated wing about 1 Now instead being butted center wing ribs pro vide nice box installing re tract servo also aileron servo Kaos II flies greatits somewhere its second hundredth logged flightand hands astute Pattern jock could really tear up sky Oftentimes mods just minor antinuisance fixes Dave Brown retracts Goldberg pushrod connectors jetti soned slotted head screws substi tuted socket head ones original screws 6-32s replacements 440s Its much easier drive nice ball-head implements ahem another instance perverse artistic soul unhappy original shape particular rudder vertical stab bit soul-appeasing balsa cyanoacrylate CyA surgery did some face-lifting now have mystery ship no can identify Neat eh Balsa USA Super Stik functionThree examples custom radio installations Top right Part installation MK Aurora Fred says hes never used servo trays come radio systems Left Instead servo tray uses piece %-ln ply cut exactly match interior particular fuselage Kaos underside ply directly beneath mounting screws reinforced small strip %2 ply give screws bite Right servos Akrobat II mounted oblique angle maximum rearward position help achieve proper CG optimum pushrod angle switch has also raised would center %-ln square side rail 40 Model Aviation Left A tinamiths solution bolt-on wing modifications An Aeromaster top wing cradle cornered provide base wing bolt original kit-provided wire pieces rubberband anchoring have omitted new version kit now sports bolt-on wing Right Ex ploded view non-squeaking landing axle assembly 1A20 short cap screw drilled out accept piece A-In music wire piece %z brass tubing acts bushing 1A-in wheel collar holds place author says hes never bent A-scale ships ally excellent airplane bargain price perhaps because its primitive looks seems much underrated past year Ive busy flying way intendedas tn-gear landlub ber dont tamper wanted inexpensive plane serve first float flier Stik logical choice wasnt far construction process promptings modelers ego began surface give Stik shapely rump Nor happy rubberbanded wings bellcranked ai lerons Using bellcranks introduces six addi tional points possible linkage slop makes pushrods inaccessible prefer di recfly coupled aileron torque rods set A-in Goldberg aileron horns achieved mod beautifully may bit unconventional what else new servo mounting solu tion once agaln bypasses cutting cen ter rib Instead ply servo frame glued right did have construct extra lit tle back porch get torque elbows inside fuselage Overall worked out quite satisfactorily rump tented over tapered MonoKote tepee sup ported minimal frame triangular balsa sticks Substituting bolted-on wings rubThe result Never again would agile powerful Super Stilc relegated ugly duckling status mod-conscious model air force Im accustomed tail-draggers way back Sitting cockpit erstwhile full-size Stinson Voyager Id forced Continued page 142 April 1989 41 berbanded ones presented no great diffi culty glued couple A-20 threaded ma ple blocks fuselage sides beneath matching wing trailing edge holes locked back side wing pair contoured maple cheeks engaged dow el intended forward rubberband providing simple secure fastening front authors method adding flaperon control model happy commercial products fill need naturally devised scheme drawing shows details I WANNA RACE NORTHEAST AREA A 5- BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 control transmitter 200 ft away can lay RC44 RC48 transmitter antenna right re ceiver antenna driving Merlin PCM system fail-safe Under same conditions can bring RC23 45 47 transmitter within 12 ft receiver before causing fail safe think clearly demonstrates narrow-band SC455 can made work well direct interference transmitter 23 channels away no worse indirect interference Tx channel away youve got nothing worry about AMA has protected OWBAMs long time its carefully selected even-numbered channelshut protection never absolute Now enlightened self-interest forces AMA move better things Prediction #1 Wideband SC4SS receivers will much use 72 MHz Aircraft Only band after 1991 will generally use ful 75 MHz Non-Aircraft Only band either 30 channels used Narrow-band SC455s will work right chan nels however keep telling THE KEY TO THE FU TURE IS GOOD RECEIVER test re sults quoted next section will demonstrate manufacturers have responded challenge good receivers now avail able additional study see AMA Phase-In Plan Explained April 1984 edition AMA News pages 103-104 Continued next month Mods/Berman Continued page 41 swivel-neck because couldnt see straight over tail-draggers nose models fa vor such gear arrangement flying grass fields because tail-draggers rear apex triangle seems provide better ground handling stability nose wheel setup Hence Gerry Terry Grahams Akrobat H tail-dragger sort -scale Laser 200 tempted another desirable building proj ect Examining tail wheel arrangement Akrobat II plans though soon wriniding nose yes feeling unmistakable stirrings urge mod probability Grahams original tail wheel functions perfectly well designed revisions II must confess did wasnt good company Didnt such illustrious aircraft British Comet Lockheed Electra others have design flaws over come degrees rate Akrobat tail wheel Mark III emerged successfully design works leads useful life today sembly shown photo well beyond its 100th contact earth Steering remarkably effective manufactured unit out 040 dural aluminum mooched local fixed base operator Please note shaded area sketch cut away after bending U rather before coping saw fine teeth will job competently Probably qualifying drastic mod forced upon original Hots first seen July 1986 issue Model Airplane News overall de sign very much appealed still lot quibbles An almost 5-ft-wingspan model one-piece structure An inacces sible fuel tank Two aileron servos such relatively small plane aile rons conveniently abut fuselage didnt bother send fullsize plansjust wound up old cerebral escapement struck pencil sheet paper modification evolved seemed satisfy previous objections Rather jamming fuselage servos bottom wing Mark IH would have very slightly fatter belly af fording comfortable mounting space wing would bolt above have single servo actuating both ailerons through torque rods removable top hatch would allow wing demounting also clear space fuel tank removal should become necessary Since unable buy shaped solid aileron stock suitable dimension con structed built-up ailerons 42 balsa little triangular ribs finished prod uct turned out unbelievably rigid worked out splendidly old fat wings will soon celebrate its second birth142 Model Aviation day Im also happy report kit manufacturer has similarly modified original Hots design owners com pact cars able transport field renting U-haul fact com pany president generous enough send sample revised kits now named Super Hots demountable wing dif fers its bolted bottom Oh well human escape ments tick same some instances modifications come about indirectly experience cer tain manufacturers fuel tanks invariably began leaking after period time principally because inner nylon washer tank seal would soften fuel exposure become concave Reduc ing expand pressure against rubber plug seal solved problemand like Aladdins genie fuel found its way out bottle needs oily mess inside ships chest cavity alerted manufac turer situation sent representa tive sample washer company has re sponded two-step product design change Three radial gussets cast inner washer gusseted outer seal added cap totally covers tank mouth date experience improved components has seen no drip twixt cap lip colossal misadventure Aero master Two venerable Great Planes model formerly kitted Andrews tale right out Twain masters shakedown flight look ing very promising stately bipe suddenly emitted odd burp followed whatoxymoron notcan de scribed deafening silence least consoled myself itll no sweat land such stable plane dead-stick Oh yeah famous last words Perversely ig noring transmitter commands mast er instead executed slow uncontrollable spiral defiantly flopped crown 70-ft-tall tree Subsequent inspection pair binoculars disclosed FS-90 departed engine room mount and fugitive has eluded would-be captors day least legitimate ones two days two nights Aero master roosted tree rescue tempts during fortunate have anyone injured resisted third day disconsolate owner disaster site contemplating hiring tree service suitably equipped climb ing personnel suddenly particularly vicious storm blew upfast hapless pilot barely made back car before gale-force winds seized 55-gallon trash barrel whipped side almost new wagon $300 repairs storm lasted 15 minutes leaving large trees snapped like matchsticks Without wasting much time lamenting dam age car set out one-man search party scout masters possible fate roost empty fanning out giant tree soon spotted brightorange-and-yellow truant sitting content edly right-side up forest floor ship almostbut entirely unscathed blade tips two nasty hunt ing arrows stuck bottom wing arrows piece fishing line tied shaft tenderly picked up wounded dodger carried back bruised car As removing arrows demounting wings cleaning up plane white van drove up two men got out Eyeing Aeromaster disbelief mumbled something order didnt fly storm did Without further ado returned van left No did lay claim arrows fate rugged survivor Sent mod-happy lab naturally its own custom fix Still sporting its patched arrow wounds like dueling scars Aeromaster Two doubtless first its lineage fixed wings landing gear Driven long-standing aversion rubberbands came up simple bolton method wings Eliminating two longitudinal wires top wing cra dle rubberbands intended attached substituted triangular pieces Continued page 146 1st US RIC Flight School Stop Crashing Start Learning Dave Scott Most Experienced Instructor North Amerka Over 3000 hrs flying time time profea alonal instructor ue acience instruction cannot imitated anywherel ything provided school ially designed Ulti mate Trainer ly 30000 air-miles flown Original training handbook ning succeas rate ly vacation area/field prices food/accomodations ACT NOW CLASSES FILLING FASTInfo pack $200 1st US RIC FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 17151524-2968 April 1989 143 r RAINBOW RUNNER PURE PERFORMANCE Rainbow Runner delivers total pattern performance 25 45 sizes Designed features pattern champion Rainbow Runner ready meet exceed expectations %fl PRECISION PRODUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Performance Hobbies Helicopter Specialist Stainless Steel Bearing Kit ShuttlesS5995 Performance Turnbuckle Kits a Hustle Fret Adjustment b No Ball Link Plyers Needed C Comes Complete Adjasiment Wretch Most kits Start S1295 Best Price Around Complete Test Flown Shuttle Packages Stop Hovering Around Call & Order Today 206 939-4000 z PERFORMANCE HOBBIES in1 r 711 Auburn Way N e Auburn WA 98002 5. You Deal o Add Doll IC No308 -l/8ScaIe o5S t4,yOk SCat ROidw No 307 .1/7 Scale o69 Add 75 SaTu U miiw mi i [Ci RIBUTED BY Mods/Berman Continued page 142 cut 18-gauge galvanized sheet metal scrapbox soldered across four corners cradle top wing equipped 1A-in maple slats glued between appropriate ribs flush bottom surface upper wing attach ment tapped maple nuts slats fitted A-in holes drilled beforehand four sheet corners Short nylon bolts used coupling custom Lower wing attachment fol lowed conventional practice using twin dowels up front two tapped maple blocks rear understand Great Planes has also discontinued using rubberbands Aeromaster Two indepen dently corroborating bias other feature changed Aero master landing gear reasoning Halco gear bolted 6-32 blind nuts better alternative wire setup pro vided kit However excellent Halco landing gear hasnt managed escape modelers hatchet Somehow mechanically oriented soul abhorred concept plastic wheel hubs riding screw thread lands wheel bearings punched out Halcos crimped locking nuts center drilled pair short A-in cap screws accept strips %-in -dia music wire soldered flush screw head become axles Since wheels have 542-in bore slipped hublength pieces %2-in K&S brass tubing over axles -in wheel collar com pletes custom assembly A-in bolt body fitted neatly gear strap holes vacated crimped nuts Lets talk about servo mounting radio manufacturers thoughtfully provide us plastic servo trayskeyed course ease installation task model build er locked-in grouping ser vos switches clustered together gener ally advantage long run Certainly often considerations point individualized approach example what locating servos order fluence center-of-gravity considera tion W7zat fuselage space too tight ac commodate servos fuselage design interferes servo mounting what clustered layout simply inappropriate particular plane Franidy have yet use first servo tray Arranging servos A-in ply wood platform suit contingencies model hand gives much lati tude confining ready-made trays After determining servo layout cus tom tailor ply platform particular fuselage cavity Servo case openings must large enough avoid vibration transfer planned cut /e pilot holes drilled hold-down screws Usually extra shim %2 ply glued underneath screw location added ten sion 'bite' battery switch course located appropriate spot servo plat form Devising system operating switch exterior another personal mods Materials required small piece thin metal sheetcopper brass steel two /16 wheel collars short length /16 music wire short piece hardwood dowel metal sheet can made piece metal tubing has cut open flattened Frame switch slider allowing enough room side frame sol der wheel collars Determine center installed wheel collar rela tive fuselage side Drill hole through center accept piece doweling Drill /16 hole through center dowel before installing flush fuse lage outside skin Attach second wheel collar appropriate length music wire Push through hole dowel outside lock onto collar slider frame Finis will never slip special trick trade rather mod method filling large dents gaps like models certainly worth sharing keep small bag filled balsa dust filings hand pur pose After filling void cavity balsa dust can wetted bet ter adhesion apply drops SAVE YOUR FIELD SNUF-LER muffler low cost easy install lightweight Sound reducing muffler no performance penalty answer AMA muffler rule suggestions aaving flying fields Meets AMA muffler rule suggestionsSNUF-LER 3 10 decibels quieter stock mufflerMUFFLER No power losa possible 300-500 RPM increase Pat Pendina Improves engine idle s better fuel economy Easily attached 25-108 stock mufflers Heat corrosion resistant Black B coat finish No special adapters required Weighs 35 ozs Fits ASP BRAT ENYA FOX HP IRVINE K & B OS MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MD Visa MC CODSEND 250 STAMP accepted Add $250 UPS $200 COD 6% safos taoFOR ADDITIONAL INFO Calif residentAND JTEC CATALOG PRODUCTS TUC flIPflUIMft MflflP[ CA Complete Line Exhaust Systems Tuned Pipes led Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsurpaSJ 146 Model Aviation $475 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS SMIITh zNnuaiazaa 7550 So GobneI Rood oodero CA 03422 66-1717 01415 $2495 CAT NO 800 AMA SANCON #48 i\A3UNJVV SOUTH BEND INDIANA RADIO CONTROL AIRPLANES BOATS TRAINS DEALERS S FACTURERS EARLY RESERVATIONS INSURE CHOICE AREAS OUTDOOR FLYING DEMOS---INDOOR BOAT POND---CAR TRACKS SWAP TABLES PRIZES ITE CONCESSIONS IC MODEL DISPLAY Flaperons alternative construct ing complex flaps operating link ages course inexpensive commer cially made device accomplish flaps ailerons linkage available Called V tail mixer its sold around $6 pur chased no doubt would have done job intended given chance After close scrutiny came up two major reasons design ing own mechanism instead 1 didnt like asymmetrical aileron deflection flaps mode 2 thought aile ron coupling merely friction set screws against %2-dia shaft just adequately secure Ailerons after expe rience considerable aerodynamic resistance addition toggled connecting rod counter personal preference arrangement devised simply sad dles entire servo onto sledlike struc tare turn propelled flap driver completed flaperons perform flawlessly photo shows full integrity original aileron servo opera tion maintained retract system flaps operationeither full full offis em ployed five-channel radio Stepped word caution Most types wings will show diminished aileron response flaps-deployed mode will thus re quire heavier stick input Doing things betterthat way comes sizes shapes forms Just about anything fair game modeler capable imagining might im proved lookout better way making new-fangled transmit ter frequency flags Using some pretty un common materials came up what may bizarre method yet Practicing grandfathers have dis * *** NEW IMPROVED *tmr Wdiit Modd wil mum wouli Poww *aleetNotres * WANDIT * US 27 * Dealers Irrvted * * * varantyl CORD * rOry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * * 5955 hasic xci 1 flat Wavd 1 * vis *1 der Special vol 2 flat 1 hat* und wand 5 6 grits *1 xe incodes 3 flat 2 half rxxvd * wands 1 Soft wends 10 xl hgrits *Additional Wands Abrasives available * * WANDIT MANUFACTURING 214 288-5789 * * PO Box 266 e Mesquite Texas 75149 Skyline Hobby s MFG ongwick 40 has 45 wing span 472 sq wing area 42 fuselage length 4 lb-2 ox 20-40 two stroke 28-48 four stroke tail dragger aemetnice air foil 4 channel P/C nice plane eta low cost Introductory Price *3755 Almost-Ready-to-Cover 67 Longwick 60 hasa60wingspan620aqin wing area 42 fuselage length 4 lb- oz 30-80 two stroke 48-60 four stroke tail dragger aemetrice air foil 4 channel P/C Introductory price 445 Almost-Ready-to-Cover 40 60 unique design appearance Fast Build Fly Kits Include balsa plywood parts Pre-bent landing Gear Hardware pack pre-cut die-cut parts Detailed steo-by-steo Full Size rolled olans order add *395 par kit S ft H COD shipments add *250 MO add 6725% ealse tax Send check MO Skyline Hobbys Mfg Treebeard Circle harles MO 63303 -928-7777 April 1989 147 M CyA depending size patch -operation requires radio system utilizing smoke clears instant balsa consix channels crete Use file sandpaper blend ing patch will much harder durable parent material _____ Attractive case included Wraparound frame fits comfortably over prescription glasses Blocks harmful ultraviolet radiation0llrtZ mist coated far scratch resistance Made entirely Polycarbonate impact protection ANSI Z871 specifications Available in Clear shop work S1325 Amber overcast days & late afternoons S14~ Gray S1455 & Mirror S19~ sunny days CA Mask S15~ Paint Mask S2045 member club hit prop blade thrown 611 engine close range tip blade struck Safety Plus glasses saved him serious injury possibly loss eye incident convinced everyone should wear safety glasses near model airplane engines being run upEd Saul Secretary Treasurer Pikes Peak RO Club P ces nc ude shipping handling 1pLii5 See hobby dealer first doesnt have what need order direct SAFETY PLUS PO Box 1173 Dept iM Clinton MS 39056 ORDERS ONLYi -800-842-7233 Cons US Mississippi 601 924-9640 /MC posal certain specialty devices like baby powder canistersthose white squeezable ones such nearly empty container becaine raw material new transmit ter flag Paint thinner easily washed off Johnson & Johnson logo Snip snip white 2A x 3%-in coupon cut out couple snips two %-in-wide strips saune material became straps hole centers spaced 1 /2 apart 2-56 screws pair 2-in-high channel nuin bers laid out cut black adhesive-backed MonoKote trim sheet Theres no need detail rest process except say red ribbon retired 72240 MHz transmitter came Aircraft Only streamer Any red ribbon would have served other substitutions could likewise made Mo tor oil plastic quart bottles would probably usable source white plastic pop rivets might have employed place screws self-sticking black numer als variety sizes can purchased very reasonably willing make own Attached second lowest Conquest Agressor R F high quality balsa Plywood finn fly airplane Covered Monokote can easily repaired should need like foam ARFs Agressor very competitive Fun Fly events ft also available built order $14995 plus SJ5P & H Just add engine tank radio go Fly $11995 pius $1200 P & H CRENSHAW AERO 423W Washington Shelbyville IN 46176 1800U941300O96 M-F tiil4OOpm CST 317-392-1726 After 500 pm Weekanda antenna section finished product seemed ever much practical commercial offerings purchased ear liertighter neater less bulky can build ones own ideas Hav ing reached bottom sample case cant say better Whether its re designing landing gear just using different screw getting mod habit what makes model building fascinating Experiment Innovate Dont follow hobgoblin convention Deviationism has served well Let accomplish RC Soaring/Blakeslee Continued page 43 beauty magnetic connectors shove wings fuselage magnets go snick everything hooked up Without connecting aileron spoiler devises would real problem K-18 cause servos have go relatively inacces sible area between shoulder-mounted wings stewed installation until saw 148 Model Aviation Roland Kerns K-iS Nats Virginia Ro land makes kit used magnets way go Theres picture Ro land K-iS page 46 November 1988 issue Model Aviation Liftfix-Schleppkupplung German very clever towbook aero-towing towing Glider up power plane photo part center sturdy tube having two snside diameters smaller end tube gets epoxied hole nose Glider can either flush slightly recessed Most fullscale Gliders have air vent hole nose hole towhook appears scale pars left gets tied end towline hole line just visible ball goes tube spring loads ball make doubly sure comes out release Now heres tricky part ball pushed tube hand little wedgeshaped part right moved forward back end tube radio operation towhook servo screw photo just keep part place tongue part wedges ball against shoulder formed tube increases diameter ball cant come Out long wedge place release towhook servo just needs pull wedge back eighth inch away goes no load speak towhook servo small will job prices magnetic connectors $12 aileron type $15 spoiler type aero-towhook $650 Tonys address 1740 NW 82nd Ave Miami FL 33126 Kyosho Melody 1500 mods Renny Schoon maker Falls Church VA sent photo girlfriend Nancy Rowzie modified Melody 1500 Youve probably seen Japa nese import Tower advertisements almost-ready-to-fly simplicity 59-in-span Melody 1500 most completely preassem bled atures aerodynamic design excep tional durability ique T-tail adds stability turbulent conditions 95 sounds good Rennys story began wanted infect favorite lass soaring bug thought aircraft own would good place start Since already expressed appreciation T tailed variety glass slipper Melody 1500 seemed trick setup its drawbacks however fuselage tail setup great wings proved weak link foam construction didnt make very high launches Theyd fold under decent pull dimensions too small over weight crate After few discourag Send SASE Comp fete Lstng products Aerospace Composite Products PILOT GLASSES. HOW VALUABLE IS YOUR EYESIGHT Adjustable side frames free-flow ventilation Extremely light weight added comfort 49span 45length 4 channel Symetrical wing Engine35-SO2cy 45-654cy Red silver trim k cockpit SAFE -TPOXY Epoxy Laminating Resin PO Box 16021 IrvIne CA 92714 714250-1107