Radio Control: Slope Soaring

O CONTROL II Wil Byers Pt 4 Box 9544 West Richland WA 99352 GOOD building aids worth weight cyanoacrylate So received CAD drawing just such aid knew Model Aviation readers would like know about building aid fuselage jig creation good friend Mr Mike Mellor Eugene Oregon Mikes jig provides platform holding fuselage Whats important jig offers mechanism accurately reference attach parts fuselage being supported jig simple very effective tool establishing proper decalage between wing elevator also provides super way accurately measure stations along fuselage tool helps hold fuselage other operations being performed Lets have Mike tell us builds uses wonderful jigs After determining width length necessary particular jig cut two three pieces wood vertical stations pieces bit longer necessary later adjustment fuselage jig possible Cut base platform mark centerline vertical stations Next make paper patterns fit fuselage locations picked support Use patterns templates cutting wooden support stations fit fuselage snugly Now using appropriate wood tools route channels base wide enough vertical stations like locate vertical stations fuselage mounts jig its nose square front See Figure 1 Use Bondo other auto body filler mixed hot adhesive affix vertical stations base platform Before gluing vertical stations base platform though adjust trimming fuselage accurately aligns base Lastly round edges vertical stations shown drawing fuselage can taped easily place necessary Layout main reason using ajig new glider project always set up jig nose glider flush front edge base station think station zero time put fuselage jig square flush front edge base have known reference point further layout As result have established accurate way laying out following 1 center-of-gravity per design CG find favorite 2 tow hook locations 3 Wing joiner locator pin locations both horizontally vertically 4 stab pivot point its fixed incidence angle 5 wing-to-stab and/or wing-tofuselage incidence 6 Any spot fuselage need accurately positioned Mike has built couple fuselage jigs often better third hand mighty little aid extremely Below left Drawing fuselage jig built 314-in plywood Mike Mellor Portland OR creates Right below right Super new hinge system developed specifically RC modelers available Fourmost Products Author Wil Byers has say about column helpful obtaining true decalage settings building wings square elevator As example have fuselage laid out jig elevator references 00 angle attack relation jig surface just matter referencing wing jig rather elevator course want can still reference elevator jig just makes whole lot easier need help under standing jig will aid building next silent beauty suggest contact Mike Send SASE Mike 1995 Pierce Eugene OR 97405 Also telephone number 503 484-1472 talk him very nicely may build onefor price 70 Model Aviation eVJ Fig 3 Epoxy filledWING anchor pointBalsa control surface edge 1/16 piano wire hinge pivot point Epoxy leading edge control surface CONTROL SURFACE Fig 1 Reference line12213 Jig built 3/4 plywood Fig 2Base tang et units rememberl NOT JUST CHARGERS COMPLETE AUTOMATIC BATTERY MAINTENANCE SYSTEMS CaRa Products PO Box 221 on SD 57013 Hrs 9 129875824 2-7 Central Time SASE information ers inquiries invited Fig 4 05833 -o PLANS NOW AVAILABLE Easy-to-build WORLD WAR SPAD RED BARON Pedal P1 anes little pilot age 3 6 will love unique Bed exciting toy Plane complete full-sixe patterns macanal list stepby step instructions color photographa Fig 5 Hing WING 450 Thrust line aileron servo Above left right right Aileron bellcrank horn design avoids several common control horn pitfalls Mare info column Right below Quabeck HQ 3-15 airfoil well suited large Sailplanes next design item have share Mr Ralph Cooney Ralph extremely avid Free Flight modeler Yes heard right Free Flighter Ralph also owns Fourmost Products plastics business Portland Oregon Out business has come super new hinge designed specifically RC modeler new hinges have developed RC aircraft over last decade However has allowed builder easily remove control surface once hinge has installed Ralphs hinge does just allows modeler/builder install control surface simply easily remove should need arise few Soaring enthusiasts including myself have using hinging system lately So want explain Continued page 144 Fig 6 04080 / 04000/ 405438 000Nkj1070 000625 02595 1/16 epoxy circuit board belicrank ailerons Fig 7 September 1992 71 Plans $1495 IUS & Canadal Specify plans dasired FL Pee add 6% tex Add $300 P ft H FANTASY TOYS oao rj~ Blvd Suite 188 rembroe rines FL 3D4 I3flS143-51S6 Airfoil Coordinates -Quabeck HO 3-15 VINoXYu 1000000000000 205001650-1050 312502505-1545 425003600-2100 550005265-2925 6100007320-3720 7150008514-4086 8200009375-4425 9250009915-4515 103000010185-4605 113500010380-4620 124000010298-4418 13500009810-3810 14600008626-2806 15700006840-1560 16800004688-0517 17850003488-0158 189000023550045 199500011180112 2010000000000000 SIG MANUFACTURING CO now Imports Complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-im ported ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC . Montezuma IA 50171 PH 515-623-5154FAX 515-623-3922Toll Free Orders 800-247-5008 Aria/HuntOn & Winter Continued page 141 Power Switch 25 on/off motor controller since came motor tested battery eliminator circuit BEC included light weight systems fit low-cost philosophy design An excellent feature available similar combinations allows include both flap motor control throttle stick puts velocity controls same control stick Low throttle control low trim provides motor-off full flaps Full throttle low trim provides motor-off flaps almost full-up Full throttle high trim provides full motor power flaps full-up Adjust controller actuate motor-on high throttle midway trim way can go flaps up operate motor throttle trim use variable flaps throttle stick Refer previous Launch Climb Glide Landing portions article about use functions flight arrangement also provides safety featurethe motor cannot turned unless throttle stick fully advanced lightweight responsive controls use Du-Bro pull-pull cable kit both elevator rudder Motor wiring use recommended Graupner 25 motor on/off switch check included wiring diagram compatibility receiver receiver lead must modified installing compatible connector pin positions changed diagrammed eight-cell operation install 25-amp fuse lead between motor power switch 10 12 cells use 30-amp fuse use Dual Rapid Charger Model Right Accessories available Hobby Lobby recharges fully spent eight-cell pack about 30 minutes Stop charging rate high rate gets down about amp battery begins feel just slightly warm have three battery packs will give air cooling charging will allow continuous flight operations very careful overcharge batteries since can very dangerous can create fire hazard youre using 10- 12-cell motor batteries get dual five- six-cell flight packs Model Flight Accessories charger has variable charge rates will handle also Bill Winter brought 65 years modeling experience latest creation Aria can help make happy crossing world glow power realm silent flight iant side Vries Continued page 65 model Modelers Choice paint has 15-minute tack time can taped second color eight hours can sanded 10 hours completely cured 72 want outstanding paint job Giant Scale model contact Modelers Choice 665 Barbara Place Mandeville LA 70448 telephone 504 624-4804 Roger Taylor president QSAA wrote announce 1992 fly-in schedule dates October 15th through 18th static display 15 October will located Nevada Palace new venue-in Las Vegas Nevada course will awards banquet 17th Rog noted earlier usual time schedule chosen accomrnodate other RC events Vegas area radio cradles radio cradles takes real genius develop simple well utilitarian AJ Products has come up supports RC transmitter both vertical horizontal positions ground youre craniring Giant bird course other devices fulfill same purpose Andy Jeff AJ have included capability plastic-covered bent-steel-wire device makes cradle unique couple integral hooks together transmitter neck strap turn cradle almost weightless two-ounce transmitter tray can have fingertip control having hang onto transmitter box stabilize radio cradles available $995 plus postage handling AJ Products PO Box 54025 Cincinnati OH 45254-0025 Need information Contact Andy Fehienbach 523 271-8429 Rememberflying safely name game RC Slope SoaringlByors Continued page 71 works install wing control surface type First hinge system applles extremely simple principle fitting plastic two holes cast See Figures 2 3 first hole bearing hole second relief hole Between two holes modeler must use razor blade X-Acto knife cut small sllt slit allows hinge open 0625 0425 hinges come two sizes piano wire hinge bearing inserted removed control surface pivots piano wire hinge bearing hinge epoxied small box opening wing clamping effect plastic piano wire holds control surface 144 Model Aviation IT YOURSELF Easy use Save Money Save Time - Aslowas$995 wr te Smithy Dept 51 9 Lathe l 3023 E 2nd Street Dalles OR 97058 1 -8DO-345-6342 Ask Operator 5 1 9 FLY Popular Quiet Convenient Way Send $100 Complete Illusiraled Cataloo MINI-ELECTRIC MOTOR/GEAR Box & PROPULSION SYSTEMS FLIGHT BATTERIES CHARGERS PLANE KITSfor small electric MINI RIG SYSTEMS DU[TED FAN5 REPLACE PIPE PRESSURE WITH P177Th POWER FAN HOUSING MOUNTED PICKUP FOR TANK PRESSURE LESS DRAG EASY HOOKUP 3/4 PSI AIR FLOW FULL SIZE $800 CASH OR HO USHER ENTERPRISES INC 1017 SE FRONTAGE RD BOX 511 NORTH PLAINS OR 97133 BOOKS FOR THE MODEL AVIAIUM CHOOSE FROM /DGE LARGE mu LECTION OF CONTROLHOW TO MODEL AND 2-3538 MUCH MUCH AT2LOG $100 E III PO Box 536-Ye Hurricane WV 0 25526 Rubber & Engine Power Free Flight Display Control Line Electric Power RIC Airplanes Ournew illuetreted 32 pege tabloid cize catalog US da $100 Foreigh $300 Penn Valley Hobby Center 837-A W Main St Lanadele PA 19446 215- 3680770 its scak kits engines accessories want & want em now got emFrank Tiano Jboat car kits hardto-find parts & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HRS 1387 N Military Trail West Palm Beach FL 33409 407-688-43669 HOBBY Eu STORE 146 Model Aviation securely place remarkably effective affords modeler opportunity remove control surface necessary remove surface simply pull surface downward upward motion motion will force hinge open somewhat bearing will free exit hinges clamping hold will probably study system conclude hinges cannot possibly hold onto control surface during high-speed flight airs force greatest Well must admit also naysayers Rest assured though hinges wont let go control surface high speed because will install three four hinges per control surface also because plastic Ralph has chosen hinges has high degree clamping strength Therefore hinge installed properly wont let go control surface unless force As aside have witnessed models performing high-speed maneuvers hinging system hinges qualified themselves witnessed what could described near-terminal highvelocity dive sleek high-speed beauty Best neat little hinges permit modeler/builder construct knuckle-type hinging system quieter scalelike option removal necessary hinges quite easy install Begin installation process constructing control surface socket will fit Next cut slot wide enough piano wire hinge pivot point leading edge control surface slot should centered leading edge somewhere between 3/4 inch long After horizontal slot has cut use Dremel similar tool cut vertical slot control surface must just wide enough allow clearance tang hinge during control surface movement point hinge pivot point ready installation horizontal slot Cut piano wire length snap hinge Remember cut between relief hole bearing hole very sharp razor blade Now epoxy piano wire horizontal slot leading edge control surface centering within vertical slot Let epoxy dry make anchor boxes trailing edge wing control surface will fit its socket Once epoxy has dried piano wire securely fastened leading edge control surface can glue hinges trailing edge wing Begin process cutting some strips paper strips paper will act clearance gauges installation place four five along trailing edge wings control surface socket next step requires stand wing its leading edge support fill anchor boxes approximately halfway epoxy Caution overfill anchor boxes may just glue control surface wing because hinges will displace some epoxy boxes epoxy may overflow bond leading edge surface socket better underfill anchor box can always come back later add extra epoxy around hinge Once boxes half-filled epoxy hinges can glued wing pushing control surface down position bases hinges going anchor boxes epoxy Tape surface place wait epoxy cure Make sure sufficient clearance between leading edge control surface control surface socket trailing edge wing strips paper work great should provide adequate clearance some cases however strip paper must doubled extra clearance After epoxy anchor boxes has cured remove paper gauges tape held control surface place control surface will now move freely easily control surface must removed just move surface down somewhat out hinge will let go out will come surface great hinging system will enjoy using purchase hinges contact Fourmost Products Inc address 4040 24th Avenue Forest Grove Oregon 97116 may also contact telephone 503 357-2732 would like know make good control horn ailerons please raise hand Ah see have number So have put together some CAD drawings short explanation should help Aileron bellcranks important part models control system normally designed provide mechanism transferring motion servo bellcrank wing aileron binding loss motion input slop control surface Additionally must function such manner input gives smooth operation However because aileron belleranks usually last items installed model prior its maiden flight often somewhat hastily designed installed As result may allow aileron differential may long enough may too long times horn design causes pushrod servo bind bottom wing youre trying get full up aileron deflection other extreme might hit wing bottom aileron moves down direction As can imagine maladies can cause problems builder/pilot bellcrank design offered reliable way avoid some control horn pitfalls designed ailerons 0 Buy 4 VIDEOS PRP fI2-WTOPSUUIUWITAT Tmm uooa m #12-li SCALEMASIERI tMWBAS #11 91 NW Intl Scalemaster i Visit WIDan Parsons W Seaplai lPS n 10- 91 Top Gun W Palm Bch Fl 90 OSAA Las Vegas W Model Eupo2 Hrs.$1995 9- 90 Scalemasters Champs IRnog TX hidhey 151 Scalemasters an Diego Aerospace Mao 2 Hrs.51995 48 90 NW loll Scalemasters Farragul Pook-Athol ID Champlin Fighter Museum in/Lou Proctor W Seaplare Champs Santa Mooica Moo Flying 2 Hrs.S1995 #7 90 Top Gun lnurlationai Mesa AZ 90 NW Model Enpo2Hrs.S1OB5 #6 89 Scalemaslers Champs St Louis 89 Lake Havano Schneider Cup Races2 Hrs.$1995 5 89 U S Nat Scale & Seaplanes W Seaplane hampsPlanes 01 Fame East Mao EA AMos OshkoohVlsil in/Ralph Beck Chicago Mu Sc & Ind 2 Hrs.$1995 44-89 Top Gun COamps Coral Springs FL tal AlEutIan DVA Preniem at Seaplane Sits NW ntl Scalemaslers tor N-ti Test PlightBaD Martins 830 Curtiss Racer2 Hrs.$1995 #3 87 Las Vegas Scaremaslers Champs tor JeOOV Test light calemasters Champs Ft Koaa Museum Org MIg F Museum d Engines Procter N-28 Coost & Test FlighI lanes 4 Hrs.$2995 2- 88 Scalemaslers Champs Ft Kona Museum Gig eMg Taur F Museum Tour d Engross Proctor N-28 Test Plight 88 NW Seaplane Champs tor N-28 Carol Byron Hanger Tour2 I4rn.$1995 31 87 Las Vegas Scalemaslers ChampsPractor JernV nOtatVpeTOur Proctor Enterprises PractorJennpTest Flights 82 NW Seaplane Cramps3 Hrs 45 Min.$1995 Special Edition br Proctor Enterprises Adbatroo OVA Brief Censor Engine & Radio tnola/t& Teal Flights -2 Hrs .$195 Curtiss JN4D Jenny Plans -FUN SCALE 100 inches 1804 sq 11 Ps BoSeets m/instruclisno 51895 10807 SE STACY CT PORTLAND OR 97256 PHONE 503 653-2578 503 678-1342 PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA 0103152 fax AUSTRALIA Phune 03-801-3899 VHS-BETA S81flE can easily travel 450 up 250 down horn configured such manner attachment servo wing belicrank perpendicular hinge point control surface thereby allowing linear input Also greater 450 up aileron travel pushrod will hit bottom wing impede movement aileron See Figures 4 5 6 Finally aileron horn 1/16-thlck epoxy circuit board soit strong Installing control horn elementary process Begin cutting slot bottom aileron width length bellcrank Sand horn bit good adhesion epoxy Fill slot approximately half full epoxy insert horn slot Examine horn verify square aileron hole pushrod aligned hinge point Wait epoxy cure process complete CAD Mike have both utilized computer-aided-design programs generate drawings Mike using version AutoCAD developed sold AutoDesk Corporation running CAD program 486 IBM-compatible computer am using both AutoCAD release 11 IBM 386 machine ClarisCAD Macintosh computer Both CAD software packages very powerful computer-aided drafting tools software tools engineered accurate drafting AutoCAD release 11 very powerful program both twodimensional three-dimensional drafting design about $3000 also quite costly average modeler other hand ClarisCAD developed Claris Corporation two-dimensional drafting design Macintosh platform also very powerful piece software its $700 price much reasonable does lack ability three-dimensional drafting programming available AutoCAD through its AutoLisp capabilities use AutoCAD primarily design work real job engineer Westinghouse use ClarisCAD home important job designing model gliders Sailplanes Although find both programs extremely useful powerful both have pluses minuses ease use think ClarisCAD user-friendly mouse-driven easy understand because tremendous pulldown help menu AutoCAD however much powerful huge command list ability threedimensional drawings interested designing CAD would recommend either program owns Macintosh think best buy money ClarisCAD like majority Americans have discovered Macintosh computer AutoDesk also offers much affordable program AutoSketch two-dimensional drafting program $1000 range enjoy designing building models variety want move computer world drafting both programs may interest you start design via computer well keep mind teaming curve required curve somewhat steep first Avid Scale enthusiasts will enjoy new FiberGlas Flugel catalog now available Windspiel Models PO Box 2121 Coeur DAlene ID 83814 FiberGlas Flugels brand-new 1993 color catalog full beautiful pictures details Scale models offered German company Windspiel small import business owned longtime RC Scale Soaring enthusiast Mr Peter Bechtel Peter has importing Scale Soaring models Europe since mid-1970s Approximately three years ago Windspiel entered agreement Fiber Glas Flugel import its line superb Scale Sailplanes Since Peter has promoting ships US Fiber Glas Flugel well-known manufacturer Scale Soaring models Europe until Windspiel obtained product line little known North America new catalog should help change definitely big boys toy airplane oops glider wish book Just models featured wish book ASH-25 sports 625-meter span Remember meter equals 3937 inches Therefore ship has span some 205 feet ASH-25 also boasts realistically scale aspect ratio 371 carry sleek pod-andboom Scale design through air wings exploit incredible performance Quabeck HQ 3-15 unique features Glas Flugel line Sailplanes construc tion models completely molded construction arrive purchasers doorstep almost ready fly parts model gel-coated white finish almost exactly duplicates fullsize counterparts Additionally control surfaces hinged precision move extremely smoothly super ships FiberGlas Flugel also make outstanding Slope Soaring models can easily cruise down ridge search lift fact aspect ratios 37 glide angles mateh aspect ratio going locate climb weakest lift course wingspan 205 feet models perform four-point rolls will however loop inside outside circle no seven-foot-span model can As Michael Selig said saw Glas Flugel ASW-22 model fly couple years ago has extremely realistic flight performance So have fun evening studying some very interesting purchasing opportunities may want write Windspiel new Continued page 151 Its Easy StNIII SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomorlates small 12-volt battery r sizes available Add $700 packaging shipping IUPS Tenon residents add 825% sales tax Allow approximately two weeks delivery September 1992 147 ULTIMATE BATTERY BACKER Use 4 5 cell packs Dec91 RCM $49 ELECTRONIC SWITCH optoisolated on/off control ignition glow smoke pump video board start etc $39 GLITCH BUSTER 6 channel Opto-isolator signal boost Kills glitches deadl Use separate servo battery pack $45 TWIN SYNC keeps engines sync gas glow & 4 stroke motors $85 SM4 THROTTLE 05 40 size electric motors Best marketl $110 JOMAR PRODUCTS 8606 SUSANVIEW LANE CINTI OH 45244 513-474-0985 please include $2 extra shipping cosss. OhGIFe0Cn,I d K $2555h0,od 0 a3050eI, Sheered Ki $d95 ULTIMATESPORT RC 255 tostAshlond/PO Box727/Sodo Springs Idoho 53276 5b55n jews mirer 200-5473742For F,he IfoSd SASE RC Slope SoaringlByors Continued page 147 catalog may expedite order giving call 208 667-0070 Airfoil Since mentioned Quabeck HQ 3-15 months column may want see what looks like So copy Notice section quite similar what might find full-scale soaring machine HQ 3-15 section developed via program manipulated Dr Helmut Quabeck 15% thick has camber 3% airfoils chord Because its moderate camber will generate goed lift coefficient C1 exceeding amount drag As point reference Eppler 214 airfoil has mean camber 403% Selig/Donovan airfoil SD8000 has mean camber line 171% Therefore HQ 3-15 falls somewhere between means its C1 should well Note also HQ 3-15 well suited flaps So utilizing flap airfoil can either increase decrease camber HQ section change amount C1 generates section primarily big Scaletype models high-aspect-ratio wings need thickness strength trade off HQ section may suffer profile drag increased aspect ratio some Scale models brings about reduction induced drag Thus thickness HQ 3-15 doesnt exact nearly penalty might expect Furthermore HQ section can carry much greater wing loading similar sections thickness Since Scale models tend have higher wing loadings nonscale cousins airfoil really superior thinner sections applied Scale models Give section try next Open-class replica let know what think ld-TimerslBaker Continued page 82 Bottom line highly recommend series books mentioned above anyone needing detailed instruction building simple stick-and-tissue Rubber models world pleasure awaits pay price terms effort learn skill think Oldtimer Model Supply catalog mentioned earlier worth price just lovely drawings Otto Kuhni catalog includes plans scratch builders supplies especially helpful Rubber model flier going fly large Rubber models 16 strands 114-in rubberor some such monsteryou will want winder ratio ballpark 41 such Bob Wilders John Morills want fly smaller models such flying Aces Moth Peck-Polymers Convertableor Rubber model up about 30-in spanyou can use higher ratio such 101-ratio Scalewinder Roes Industries 606 Walnut Creek Dr Goldsboro NC 27534 has quality gears bearings cheap no cheap winder will have bearings gears adequate job recommend Roes winder $3995 plus $3 shipping handling can get cheaper winders all-plastic jobs will handle few strands rubberfine Peanuts ROGs maybe barely enough flying Aces Moth days hand drills hardware store likely have plastic gears bind fail under load Electric drills cheap little market exists quality hand drills would cost electric ones Morill winder mentioned above Oldtimer Model Supply catalog its called Sidewinder FAI Model Supply catalog PO Box 3957 Torrance CA 90510 FAI catalog $150 FAI Model Supply prime source rubber strip days catalog has surprising mehadnt seen few years number kits Old-Timer Rubber models Bob Wilders winders first class information send SASE 2010 Boston Irving TX 75061 column July issue mentioned improved SAM Speaks newsletter gave correct address write want join SAM get newsletter What failed make clear will also get rule book list approved Gas model designs SAM SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS VA U RI n ThIflTVflIA Y OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 114 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT I/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED wrr~ 24 HRS September 1992 151 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE P5MW SOffIE RECH 1RGEABLE BATTERIES CALL 800/8335680

O CONTROL II Wil Byers Pt 4 Box 9544 West Richland WA 99352 GOOD building aids worth weight cyanoacrylate So received CAD drawing just such aid knew Model Aviation readers would like know about building aid fuselage jig creation good friend Mr Mike Mellor Eugene Oregon Mikes jig provides platform holding fuselage Whats important jig offers mechanism accurately reference attach parts fuselage being supported jig simple very effective tool establishing proper decalage between wing elevator also provides super way accurately measure stations along fuselage tool helps hold fuselage other operations being performed Lets have Mike tell us builds uses wonderful jigs After determining width length necessary particular jig cut two three pieces wood vertical stations pieces bit longer necessary later adjustment fuselage jig possible Cut base platform mark centerline vertical stations Next make paper patterns fit fuselage locations picked support Use patterns templates cutting wooden support stations fit fuselage snugly Now using appropriate wood tools route channels base wide enough vertical stations like locate vertical stations fuselage mounts jig its nose square front See Figure 1 Use Bondo other auto body filler mixed hot adhesive affix vertical stations base platform Before gluing vertical stations base platform though adjust trimming fuselage accurately aligns base Lastly round edges vertical stations shown drawing fuselage can taped easily place necessary Layout main reason using ajig new glider project always set up jig nose glider flush front edge base station think station zero time put fuselage jig square flush front edge base have known reference point further layout As result have established accurate way laying out following 1 center-of-gravity per design CG find favorite 2 tow hook locations 3 Wing joiner locator pin locations both horizontally vertically 4 stab pivot point its fixed incidence angle 5 wing-to-stab and/or wing-tofuselage incidence 6 Any spot fuselage need accurately positioned Mike has built couple fuselage jigs often better third hand mighty little aid extremely Below left Drawing fuselage jig built 314-in plywood Mike Mellor Portland OR creates Right below right Super new hinge system developed specifically RC modelers available Fourmost Products Author Wil Byers has say about column helpful obtaining true decalage settings building wings square elevator As example have fuselage laid out jig elevator references 00 angle attack relation jig surface just matter referencing wing jig rather elevator course want can still reference elevator jig just makes whole lot easier need help under standing jig will aid building next silent beauty suggest contact Mike Send SASE Mike 1995 Pierce Eugene OR 97405 Also telephone number 503 484-1472 talk him very nicely may build onefor price 70 Model Aviation eVJ Fig 3 Epoxy filledWING anchor pointBalsa control surface edge 1/16 piano wire hinge pivot point Epoxy leading edge control surface CONTROL SURFACE Fig 1 Reference line12213 Jig built 3/4 plywood Fig 2Base tang et units rememberl NOT JUST CHARGERS COMPLETE AUTOMATIC BATTERY MAINTENANCE SYSTEMS CaRa Products PO Box 221 on SD 57013 Hrs 9 129875824 2-7 Central Time SASE information ers inquiries invited Fig 4 05833 -o PLANS NOW AVAILABLE Easy-to-build WORLD WAR SPAD RED BARON Pedal P1 anes little pilot age 3 6 will love unique Bed exciting toy Plane complete full-sixe patterns macanal list stepby step instructions color photographa Fig 5 Hing WING 450 Thrust line aileron servo Above left right right Aileron bellcrank horn design avoids several common control horn pitfalls Mare info column Right below Quabeck HQ 3-15 airfoil well suited large Sailplanes next design item have share Mr Ralph Cooney Ralph extremely avid Free Flight modeler Yes heard right Free Flighter Ralph also owns Fourmost Products plastics business Portland Oregon Out business has come super new hinge designed specifically RC modeler new hinges have developed RC aircraft over last decade However has allowed builder easily remove control surface once hinge has installed Ralphs hinge does just allows modeler/builder install control surface simply easily remove should need arise few Soaring enthusiasts including myself have using hinging system lately So want explain Continued page 144 Fig 6 04080 / 04000/ 405438 000Nkj1070 000625 02595 1/16 epoxy circuit board belicrank ailerons Fig 7 September 1992 71 Plans $1495 IUS & Canadal Specify plans dasired FL Pee add 6% tex Add $300 P ft H FANTASY TOYS oao rj~ Blvd Suite 188 rembroe rines FL 3D4 I3flS143-51S6 Airfoil Coordinates -Quabeck HO 3-15 VINoXYu 1000000000000 205001650-1050 312502505-1545 425003600-2100 550005265-2925 6100007320-3720 7150008514-4086 8200009375-4425 9250009915-4515 103000010185-4605 113500010380-4620 124000010298-4418 13500009810-3810 14600008626-2806 15700006840-1560 16800004688-0517 17850003488-0158 189000023550045 199500011180112 2010000000000000 SIG MANUFACTURING CO now Imports Complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-im ported ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC . Montezuma IA 50171 PH 515-623-5154FAX 515-623-3922Toll Free Orders 800-247-5008 Aria/HuntOn & Winter Continued page 141 Power Switch 25 on/off motor controller since came motor tested battery eliminator circuit BEC included light weight systems fit low-cost philosophy design An excellent feature available similar combinations allows include both flap motor control throttle stick puts velocity controls same control stick Low throttle control low trim provides motor-off full flaps Full throttle low trim provides motor-off flaps almost full-up Full throttle high trim provides full motor power flaps full-up Adjust controller actuate motor-on high throttle midway trim way can go flaps up operate motor throttle trim use variable flaps throttle stick Refer previous Launch Climb Glide Landing portions article about use functions flight arrangement also provides safety featurethe motor cannot turned unless throttle stick fully advanced lightweight responsive controls use Du-Bro pull-pull cable kit both elevator rudder Motor wiring use recommended Graupner 25 motor on/off switch check included wiring diagram compatibility receiver receiver lead must modified installing compatible connector pin positions changed diagrammed eight-cell operation install 25-amp fuse lead between motor power switch 10 12 cells use 30-amp fuse use Dual Rapid Charger Model Right Accessories available Hobby Lobby recharges fully spent eight-cell pack about 30 minutes Stop charging rate high rate gets down about amp battery begins feel just slightly warm have three battery packs will give air cooling charging will allow continuous flight operations very careful overcharge batteries since can very dangerous can create fire hazard youre using 10- 12-cell motor batteries get dual five- six-cell flight packs Model Flight Accessories charger has variable charge rates will handle also Bill Winter brought 65 years modeling experience latest creation Aria can help make happy crossing world glow power realm silent flight iant side Vries Continued page 65 model Modelers Choice paint has 15-minute tack time can taped second color eight hours can sanded 10 hours completely cured 72 want outstanding paint job Giant Scale model contact Modelers Choice 665 Barbara Place Mandeville LA 70448 telephone 504 624-4804 Roger Taylor president QSAA wrote announce 1992 fly-in schedule dates October 15th through 18th static display 15 October will located Nevada Palace new venue-in Las Vegas Nevada course will awards banquet 17th Rog noted earlier usual time schedule chosen accomrnodate other RC events Vegas area radio cradles radio cradles takes real genius develop simple well utilitarian AJ Products has come up supports RC transmitter both vertical horizontal positions ground youre craniring Giant bird course other devices fulfill same purpose Andy Jeff AJ have included capability plastic-covered bent-steel-wire device makes cradle unique couple integral hooks together transmitter neck strap turn cradle almost weightless two-ounce transmitter tray can have fingertip control having hang onto transmitter box stabilize radio cradles available $995 plus postage handling AJ Products PO Box 54025 Cincinnati OH 45254-0025 Need information Contact Andy Fehienbach 523 271-8429 Rememberflying safely name game RC Slope SoaringlByors Continued page 71 works install wing control surface type First hinge system applles extremely simple principle fitting plastic two holes cast See Figures 2 3 first hole bearing hole second relief hole Between two holes modeler must use razor blade X-Acto knife cut small sllt slit allows hinge open 0625 0425 hinges come two sizes piano wire hinge bearing inserted removed control surface pivots piano wire hinge bearing hinge epoxied small box opening wing clamping effect plastic piano wire holds control surface 144 Model Aviation IT YOURSELF Easy use Save Money Save Time - Aslowas$995 wr te Smithy Dept 51 9 Lathe l 3023 E 2nd Street Dalles OR 97058 1 -8DO-345-6342 Ask Operator 5 1 9 FLY Popular Quiet Convenient Way Send $100 Complete Illusiraled Cataloo MINI-ELECTRIC MOTOR/GEAR Box & PROPULSION SYSTEMS FLIGHT BATTERIES CHARGERS PLANE KITSfor small electric MINI RIG SYSTEMS DU[TED FAN5 REPLACE PIPE PRESSURE WITH P177Th POWER FAN HOUSING MOUNTED PICKUP FOR TANK PRESSURE LESS DRAG EASY HOOKUP 3/4 PSI AIR FLOW FULL SIZE $800 CASH OR HO USHER ENTERPRISES INC 1017 SE FRONTAGE RD BOX 511 NORTH PLAINS OR 97133 BOOKS FOR THE MODEL AVIAIUM CHOOSE FROM /DGE LARGE mu LECTION OF CONTROLHOW TO MODEL AND 2-3538 MUCH MUCH AT2LOG $100 E III PO Box 536-Ye Hurricane WV 0 25526 Rubber & Engine Power Free Flight Display Control Line Electric Power RIC Airplanes Ournew illuetreted 32 pege tabloid cize catalog US da $100 Foreigh $300 Penn Valley Hobby Center 837-A W Main St Lanadele PA 19446 215- 3680770 its scak kits engines accessories want & want em now got emFrank Tiano Jboat car kits hardto-find parts & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HRS 1387 N Military Trail West Palm Beach FL 33409 407-688-43669 HOBBY Eu STORE 146 Model Aviation securely place remarkably effective affords modeler opportunity remove control surface necessary remove surface simply pull surface downward upward motion motion will force hinge open somewhat bearing will free exit hinges clamping hold will probably study system conclude hinges cannot possibly hold onto control surface during high-speed flight airs force greatest Well must admit also naysayers Rest assured though hinges wont let go control surface high speed because will install three four hinges per control surface also because plastic Ralph has chosen hinges has high degree clamping strength Therefore hinge installed properly wont let go control surface unless force As aside have witnessed models performing high-speed maneuvers hinging system hinges qualified themselves witnessed what could described near-terminal highvelocity dive sleek high-speed beauty Best neat little hinges permit modeler/builder construct knuckle-type hinging system quieter scalelike option removal necessary hinges quite easy install Begin installation process constructing control surface socket will fit Next cut slot wide enough piano wire hinge pivot point leading edge control surface slot should centered leading edge somewhere between 3/4 inch long After horizontal slot has cut use Dremel similar tool cut vertical slot control surface must just wide enough allow clearance tang hinge during control surface movement point hinge pivot point ready installation horizontal slot Cut piano wire length snap hinge Remember cut between relief hole bearing hole very sharp razor blade Now epoxy piano wire horizontal slot leading edge control surface centering within vertical slot Let epoxy dry make anchor boxes trailing edge wing control surface will fit its socket Once epoxy has dried piano wire securely fastened leading edge control surface can glue hinges trailing edge wing Begin process cutting some strips paper strips paper will act clearance gauges installation place four five along trailing edge wings control surface socket next step requires stand wing its leading edge support fill anchor boxes approximately halfway epoxy Caution overfill anchor boxes may just glue control surface wing because hinges will displace some epoxy boxes epoxy may overflow bond leading edge surface socket better underfill anchor box can always come back later add extra epoxy around hinge Once boxes half-filled epoxy hinges can glued wing pushing control surface down position bases hinges going anchor boxes epoxy Tape surface place wait epoxy cure Make sure sufficient clearance between leading edge control surface control surface socket trailing edge wing strips paper work great should provide adequate clearance some cases however strip paper must doubled extra clearance After epoxy anchor boxes has cured remove paper gauges tape held control surface place control surface will now move freely easily control surface must removed just move surface down somewhat out hinge will let go out will come surface great hinging system will enjoy using purchase hinges contact Fourmost Products Inc address 4040 24th Avenue Forest Grove Oregon 97116 may also contact telephone 503 357-2732 would like know make good control horn ailerons please raise hand Ah see have number So have put together some CAD drawings short explanation should help Aileron bellcranks important part models control system normally designed provide mechanism transferring motion servo bellcrank wing aileron binding loss motion input slop control surface Additionally must function such manner input gives smooth operation However because aileron belleranks usually last items installed model prior its maiden flight often somewhat hastily designed installed As result may allow aileron differential may long enough may too long times horn design causes pushrod servo bind bottom wing youre trying get full up aileron deflection other extreme might hit wing bottom aileron moves down direction As can imagine maladies can cause problems builder/pilot bellcrank design offered reliable way avoid some control horn pitfalls designed ailerons 0 Buy 4 VIDEOS PRP fI2-WTOPSUUIUWITAT Tmm uooa m #12-li SCALEMASIERI tMWBAS #11 91 NW Intl Scalemaster i Visit WIDan Parsons W Seaplai lPS n 10- 91 Top Gun W Palm Bch Fl 90 OSAA Las Vegas W Model Eupo2 Hrs.$1995 9- 90 Scalemasters Champs IRnog TX hidhey 151 Scalemasters an Diego Aerospace Mao 2 Hrs.51995 48 90 NW loll Scalemasters Farragul Pook-Athol ID Champlin Fighter Museum in/Lou Proctor W Seaplare Champs Santa Mooica Moo Flying 2 Hrs.S1995 #7 90 Top Gun lnurlationai Mesa AZ 90 NW Model Enpo2Hrs.S1OB5 #6 89 Scalemaslers Champs St Louis 89 Lake Havano Schneider Cup Races2 Hrs.$1995 5 89 U S Nat Scale & Seaplanes W Seaplane hampsPlanes 01 Fame East Mao EA AMos OshkoohVlsil in/Ralph Beck Chicago Mu Sc & Ind 2 Hrs.$1995 44-89 Top Gun COamps Coral Springs FL tal AlEutIan DVA Preniem at Seaplane Sits NW ntl Scalemaslers tor N-ti Test PlightBaD Martins 830 Curtiss Racer2 Hrs.$1995 #3 87 Las Vegas Scaremaslers Champs tor JeOOV Test light calemasters Champs Ft Koaa Museum Org MIg F Museum d Engines Procter N-28 Coost & Test FlighI lanes 4 Hrs.$2995 2- 88 Scalemaslers Champs Ft Kona Museum Gig eMg Taur F Museum Tour d Engross Proctor N-28 Test Plight 88 NW Seaplane Champs tor N-28 Carol Byron Hanger Tour2 I4rn.$1995 31 87 Las Vegas Scalemaslers ChampsPractor JernV nOtatVpeTOur Proctor Enterprises PractorJennpTest Flights 82 NW Seaplane Cramps3 Hrs 45 Min.$1995 Special Edition br Proctor Enterprises Adbatroo OVA Brief Censor Engine & Radio tnola/t& Teal Flights -2 Hrs .$195 Curtiss JN4D Jenny Plans -FUN SCALE 100 inches 1804 sq 11 Ps BoSeets m/instruclisno 51895 10807 SE STACY CT PORTLAND OR 97256 PHONE 503 653-2578 503 678-1342 PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA 0103152 fax AUSTRALIA Phune 03-801-3899 VHS-BETA S81flE can easily travel 450 up 250 down horn configured such manner attachment servo wing belicrank perpendicular hinge point control surface thereby allowing linear input Also greater 450 up aileron travel pushrod will hit bottom wing impede movement aileron See Figures 4 5 6 Finally aileron horn 1/16-thlck epoxy circuit board soit strong Installing control horn elementary process Begin cutting slot bottom aileron width length bellcrank Sand horn bit good adhesion epoxy Fill slot approximately half full epoxy insert horn slot Examine horn verify square aileron hole pushrod aligned hinge point Wait epoxy cure process complete CAD Mike have both utilized computer-aided-design programs generate drawings Mike using version AutoCAD developed sold AutoDesk Corporation running CAD program 486 IBM-compatible computer am using both AutoCAD release 11 IBM 386 machine ClarisCAD Macintosh computer Both CAD software packages very powerful computer-aided drafting tools software tools engineered accurate drafting AutoCAD release 11 very powerful program both twodimensional three-dimensional drafting design about $3000 also quite costly average modeler other hand ClarisCAD developed Claris Corporation two-dimensional drafting design Macintosh platform also very powerful piece software its $700 price much reasonable does lack ability three-dimensional drafting programming available AutoCAD through its AutoLisp capabilities use AutoCAD primarily design work real job engineer Westinghouse use ClarisCAD home important job designing model gliders Sailplanes Although find both programs extremely useful powerful both have pluses minuses ease use think ClarisCAD user-friendly mouse-driven easy understand because tremendous pulldown help menu AutoCAD however much powerful huge command list ability threedimensional drawings interested designing CAD would recommend either program owns Macintosh think best buy money ClarisCAD like majority Americans have discovered Macintosh computer AutoDesk also offers much affordable program AutoSketch two-dimensional drafting program $1000 range enjoy designing building models variety want move computer world drafting both programs may interest you start design via computer well keep mind teaming curve required curve somewhat steep first Avid Scale enthusiasts will enjoy new FiberGlas Flugel catalog now available Windspiel Models PO Box 2121 Coeur DAlene ID 83814 FiberGlas Flugels brand-new 1993 color catalog full beautiful pictures details Scale models offered German company Windspiel small import business owned longtime RC Scale Soaring enthusiast Mr Peter Bechtel Peter has importing Scale Soaring models Europe since mid-1970s Approximately three years ago Windspiel entered agreement Fiber Glas Flugel import its line superb Scale Sailplanes Since Peter has promoting ships US Fiber Glas Flugel well-known manufacturer Scale Soaring models Europe until Windspiel obtained product line little known North America new catalog should help change definitely big boys toy airplane oops glider wish book Just models featured wish book ASH-25 sports 625-meter span Remember meter equals 3937 inches Therefore ship has span some 205 feet ASH-25 also boasts realistically scale aspect ratio 371 carry sleek pod-andboom Scale design through air wings exploit incredible performance Quabeck HQ 3-15 unique features Glas Flugel line Sailplanes construc tion models completely molded construction arrive purchasers doorstep almost ready fly parts model gel-coated white finish almost exactly duplicates fullsize counterparts Additionally control surfaces hinged precision move extremely smoothly super ships FiberGlas Flugel also make outstanding Slope Soaring models can easily cruise down ridge search lift fact aspect ratios 37 glide angles mateh aspect ratio going locate climb weakest lift course wingspan 205 feet models perform four-point rolls will however loop inside outside circle no seven-foot-span model can As Michael Selig said saw Glas Flugel ASW-22 model fly couple years ago has extremely realistic flight performance So have fun evening studying some very interesting purchasing opportunities may want write Windspiel new Continued page 151 Its Easy StNIII SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomorlates small 12-volt battery r sizes available Add $700 packaging shipping IUPS Tenon residents add 825% sales tax Allow approximately two weeks delivery September 1992 147 ULTIMATE BATTERY BACKER Use 4 5 cell packs Dec91 RCM $49 ELECTRONIC SWITCH optoisolated on/off control ignition glow smoke pump video board start etc $39 GLITCH BUSTER 6 channel Opto-isolator signal boost Kills glitches deadl Use separate servo battery pack $45 TWIN SYNC keeps engines sync gas glow & 4 stroke motors $85 SM4 THROTTLE 05 40 size electric motors Best marketl $110 JOMAR PRODUCTS 8606 SUSANVIEW LANE CINTI OH 45244 513-474-0985 please include $2 extra shipping cosss. OhGIFe0Cn,I d K $2555h0,od 0 a3050eI, Sheered Ki $d95 ULTIMATESPORT RC 255 tostAshlond/PO Box727/Sodo Springs Idoho 53276 5b55n jews mirer 200-5473742For F,he IfoSd SASE RC Slope SoaringlByors Continued page 147 catalog may expedite order giving call 208 667-0070 Airfoil Since mentioned Quabeck HQ 3-15 months column may want see what looks like So copy Notice section quite similar what might find full-scale soaring machine HQ 3-15 section developed via program manipulated Dr Helmut Quabeck 15% thick has camber 3% airfoils chord Because its moderate camber will generate goed lift coefficient C1 exceeding amount drag As point reference Eppler 214 airfoil has mean camber 403% Selig/Donovan airfoil SD8000 has mean camber line 171% Therefore HQ 3-15 falls somewhere between means its C1 should well Note also HQ 3-15 well suited flaps So utilizing flap airfoil can either increase decrease camber HQ section change amount C1 generates section primarily big Scaletype models high-aspect-ratio wings need thickness strength trade off HQ section may suffer profile drag increased aspect ratio some Scale models brings about reduction induced drag Thus thickness HQ 3-15 doesnt exact nearly penalty might expect Furthermore HQ section can carry much greater wing loading similar sections thickness Since Scale models tend have higher wing loadings nonscale cousins airfoil really superior thinner sections applied Scale models Give section try next Open-class replica let know what think ld-TimerslBaker Continued page 82 Bottom line highly recommend series books mentioned above anyone needing detailed instruction building simple stick-and-tissue Rubber models world pleasure awaits pay price terms effort learn skill think Oldtimer Model Supply catalog mentioned earlier worth price just lovely drawings Otto Kuhni catalog includes plans scratch builders supplies especially helpful Rubber model flier going fly large Rubber models 16 strands 114-in rubberor some such monsteryou will want winder ratio ballpark 41 such Bob Wilders John Morills want fly smaller models such flying Aces Moth Peck-Polymers Convertableor Rubber model up about 30-in spanyou can use higher ratio such 101-ratio Scalewinder Roes Industries 606 Walnut Creek Dr Goldsboro NC 27534 has quality gears bearings cheap no cheap winder will have bearings gears adequate job recommend Roes winder $3995 plus $3 shipping handling can get cheaper winders all-plastic jobs will handle few strands rubberfine Peanuts ROGs maybe barely enough flying Aces Moth days hand drills hardware store likely have plastic gears bind fail under load Electric drills cheap little market exists quality hand drills would cost electric ones Morill winder mentioned above Oldtimer Model Supply catalog its called Sidewinder FAI Model Supply catalog PO Box 3957 Torrance CA 90510 FAI catalog $150 FAI Model Supply prime source rubber strip days catalog has surprising mehadnt seen few years number kits Old-Timer Rubber models Bob Wilders winders first class information send SASE 2010 Boston Irving TX 75061 column July issue mentioned improved SAM Speaks newsletter gave correct address write want join SAM get newsletter What failed make clear will also get rule book list approved Gas model designs SAM SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS VA U RI n ThIflTVflIA Y OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 114 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT I/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED wrr~ 24 HRS September 1992 151 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPS! 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