NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995
Edition: Model Aviation - 1981/07
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 108, 110
NO OCR TEXT NO OCR TEXT small black models used during WW II train air crews anti-aircraft gunners ground spotters recognize silhouettes friend ly enemy aircraft models highly detailed nor elaborately finished instantly recognizable trained eye concept has carried design development Rearwin jun ior model Its outlines shape general appearance identifiable question Rearwin Junior highly detailed nor its dimensions absolute scale has scale silhouette design intended interested strong highly flyable model prepared commit large amount time effort usually required buil4ing museum Scale models Frankly largest reward building Silhou ette Scale lies flying As model gracefully cruises around cloud-speckled sky can thrill illusion full-scale appear ance distance seems equal Precision Scale rendition same prototype Yet wing power loadings reasonable flier does need fight model fear cant maintain control use scale ruler design will reveal enlarged stabilizer increased dihedral slight increase wing chord changes virtually indistinguishable air add overall docility aircrafts flight Construction Since anyone has constructed Old-Timer Free Flight Scale model should encounter difficulty constructing model will waste space Part-Ato-Part-B description Rather shall try explain just unusual novel aspects models construction engine cowl really rather simple fabricate although foam plug epoxy/glass technique may seem rather axesome have never worked materials plug rough-cut Sig equivalent onepound foam polystyrene tack-glued firewall 5-min epoxy carved shape using knife sandpaper does need perfectly smooth well shaped Remove plug coat layer Hobbypoxy Formula Devcon 30-mm epoxy coat provides firm surface subsequent layers glass will applied Cut gores shapes like sections football cover fit plug Avoid multiple sharp corners covered same section Its better use several smaller gores large fiberglass use heavyweight type repalring car bodies ship hulls miserable luck attempting use type glass tape used wing nose reinforcements models Heavyweight glass cloth available boat sections stores such Sears KMart Mix batch epoxy spread thin layer over area plug covered gores Lay pre-cut glass onto epoxy flatten contour section plastic wrap such Saran Once properly posi tioned epoxy has pushed up through weave remove plastic wrap smooth out epoxy moist finger saliva seems effective solvent Hands can cleaned butyrate thinner Additional gores applied same man ner until surface plug completely covered Overlaps sanded feather edge once epoxy has cured Use *60 #100 aluminum oxide paper Repeat build-up steps until sections have least three layers fiberglass fourth areas high stress Since multiple layer steps take much longer epoxy set taken up actual work helpful fabricating cowl simultaneously building other components model Sand final layer #220 paper mix large batch epoxy spread over complete surface Attempt place epoxy nose plug next step tends push epoxy toward back Rearwin Junior looks good view Trexler air wheels dummy cylinders pliot figures work create remarkably realistic model A,thnr nIRnA covered Sig Koverall novel mannner described text Any high-temperature covering films okay intrepid pilot has moorcyclesype winascreen 50 Keep DU9S out No side rear windows available Rearwin Junior Use Williams Bros LeRhone cylinders 2%-in sportsman pilot ImpIe two-piece torque bar gear appears much like prototypes addition non-functional cross members shocks Trap door provides easy access fuel tank battery pack 3/16 0 D BRASS TUBE LOCKED IN 1/16 PLY PLATES AND SPRUCE FIL I/32PLYWOOD DECK A2 WILLIAMS BROS LE RHONE CYLINDER3 1/4 PLWXI FIBEWALL FIBERGLASS COWLING 1/16 WIRE PUSH ROD TO SER\ 3/16 X 3/4 SPRUCE BLOCKS SANDWKH 1/16 WIRE HOOKS Wa PLY CAFWIB 1/8 X /4 HARD BALSA lOP STRINGERS 1/8 LITE-PLY HAiCH L/B BALSAI/B LITE -PLY RIBS K4X /2 SPRUCE PLANKING DOUBLED TRUTS 4 VI/4SO SPRUCE BRES C PLYW COWLING /7 K 1/4 BALSA TIPS RUDDER AND STABILIZERX7JIIlINNj.j\ /8 X 1/4 RIBS 1/4 X 1/2 ELEVATOR ANDNiIfII[ STABILIZER SPARS AND LE I/4X V2 BALSA BLOCKS FORMER1/2K-S STREAMJNE TUBE I/B UTE- PLY 3/32 STEEL WIRE FOX 40 ENGINE ON516 SH 552 LINKS ATENDS KRAFT HAYES MOUNT1/4 SHEET BALSA BOlTOM COCKPIT ONLY SHAPED NYLON HORN I/B PLWJOOD HATCH WITHAT WING AND FUSELAGE 4-40 BOLTS INTO T-NUTSIN 1/4 X 1/2 SPRUCE BLOCK 5/32 WIRE LG STRUTS SHOCK STRUT WIRES516 SH 125 LG BLOCKSTREXLER ID G-3 I/2WI-EELSI REAR ONE SLIDES IN SLOT II I I/4X 3/8BALSATE 1/4 X 1/2 POSTS FOR AND RUBDER 1/16 BENT WIRE JOINS ELEVATOR HALVES 1/4 X 3/B T E 3/4 TAILWHEEL ON I/B WIRE THROUGH SIG SH- 132 BRACKET 1/4 SQ BALSA LONGERONS AND FRAMES I/BX 1/4 BALSA DIAGONALS I/B UTE PLY MOUNT FOR STRUT HORN WITH T-RUTS 1/32 PLY PLATE 5/16 XII/4 BALSA TE 1/4 15/BAlL SPAR 1/4 FILLERS 1/4 X 3/4 AILERON HINGE SRR 1/4 BALSA FILLERS /4 BALSA WING TIPS 3/16 50 SPRUCE SPARS TOP 8011DM 3/32 BALSA RIBS PLYWOD AT ROOTS 1/BLITE-PLY MOUNT FOR 900 BELLCRANK 5/BX 3/4 BALSA L E STOCK Inflate large rubber balloon press down over epoxy-coated plug until covers rear excess Slowly deflate balloon making sure back side folds under rear plug Allow epoxy cure remove balloon peeling off surface should level smooth relatively free voids some chance repeat balloon step thinner layer epoxy Small voids bubbles can easily filled micro-balloons epoxy Hobbypoxy PFC foam can removed inside cowl spoon similar instrument remaining small pieces will dissolve thinner gasoline Danger above should done outdoors glop forms extremely toxic inhaled residue should placed tightly sealed container buried sani tary landfill should left lying around nor should dumped sewer technique pioneered Hobby poxy EZ-does method use fi berglass rather Dynel cloth because epoxy works up through weave freely technique relatively simple very difficult goof up resultant cowl attractive much less expensive simple fabricate traditional block balsa unit durability excellent cowl unit completed placing vertical cylinder top two 1200 used 2-in scale Williams Brothers LeRhone cylinders exhaust stacks pointed upward 1/16-in hole drilled stack cylinder units joined piece music wire Wilhold R/G 56 adhesive provides flexible joint avoids popping off stacks handling cylinders placed holes cut glass carbide cutter Dremel Moto Tool can cut hand using round file appropriate size held epoxy/glass small dab 5-mm epoxy set Hobbypoxy PFC forced around cylinder bases inside cowl remove excess squeezes out Editors note photo essay method cowl construction dummy engine installation scheduled early issue Fuselage use laminated -in Lite Ply rather novel highly utilitarian resul tant -in epoxy Lite Ply nearly strong aircraft ply yet much lighter weight sheets joined thin coat 5-mm epoxy has spread over surface scrap ply used like trowel sections must 24 Model Aviation Laminated Lite-Ply sides provide solid anchoring spruce cabin superstructure Model exceptionally rugged though light weight Kinship Free Flight Scale readily apparent uncoverea sramewor views An outstanding example authors Silhouette Scale concept Small box balsa blocks hold wing proper dihedral Struts fitted Struts attached devises cut down nylon control horns Davis Diesel conversion Supertigre 35 provides plenty power Note fill/drain lines fuel filterlatter important dependability Tatone muffler bolts directlyto engine carriesexhaust out bottom cowlingbig help keeping residue away open-sided cabin Hookup controls steerable tail wheel straightforward Slow flight model permits large control surfaces throw reducers LEADING EDSES/BS3/4LE STOCK•~~ STRUT MOUNT BOTIThI FRONT SHIELD __________ 7 PLASTIC SHEET 1 TURTLESECK COWL 1/32 PLY WIN CUT DOWN NYLON HORN ________SIS SH-SSD RC LINKS BRASS SLEEVE JOINER TOP SPAR3/16 00 BRASS TUBES INFILL WITH W4W3 _______TIP. ..-ASPRUCE SCRAP3/3D STEEL WIRE LEADING EDGEWD ID REOD TIPSPAR-~ B__SECATA-A/IKS3/4STREAM NE _________W3A IS REDOI/B WRE HOOK N GROVE6 P V BOSSEE TESTI S RUT DETAIL GLASS/EPOXY COWL FORMEDCRACK LINE1________________________________Fl OVER FOAM PLUSGOLDBERG SHORT HORNSL4UL/D SPRUCEC S WILLIAMS BROS MODIFIED LE RHONE CYLINDERSS_ N -g I- ERY _____ ____ ______ z eIgRYROOI\/ NYROD EXITI/4SHEET FOX 40 SHOWNSS4 TANK\V ENGIRUD BEL METAL TILLER W/440 SOME ENGINES1\kSVO SERVO REQUIRE FOXV4SIIS EIVE1 EXTENSION SHAFT w fl MODmY FORD DIA I/4SHEET BOTTOM-1/16 WIRE3/4 WHEEL SCALE RUSE LENGTH SHOWN ADD FOR SPORT ALLOWS I/B PLY HATCH B PINm USE OF AOZ TANK44053/RBOLTSIDBT- UT ARAFT/HAYES ORS/3D DIA WIRE GEAR3/3D FREEWING STRUT MOUNTS SIMILAR M UNTHELD TO BLOCK WITHSTRUTI/BXI/4 RIBHINGES B 0NYLON STRAPS B SCREWSHRN I/4DIA m S L14I SCALE 4CM B/C AIRCRAFT- FUEL LINE1/4 SHEETI/4S3/Bt7II/IBDA WIRE SIICUT AFTERm POWER DCC TO KS CC -LOADING 14025/SO FTTIPSI INEREPDXYC 01______________ FIREWALL INFLATE TO 3-52DESIGNED B DRAWN BY DOC MATHEWSIIjNGJG1 I/4AC PLYTREXLER4IIOG____________________________________V -B UNDERCARRIAGE PATTERNTRACED FOB MODEL AVIATIO BY HERB CLUKEY.....--.________ S/3D MW ID NO SCALEWST B OZS. READY TO FLYI I/RD0 laid out flat surface weighted down epoxy cures Its best cut parts out previously laminated sections Drill holes time cutting Two fuselage sides constructed over other classical manner except wing roots cabanes assembled integrally sides ply cut crack line firewall end blocked up -in epoxy cures crack sure develop left right sidenot two other cabin sides perfectly flat B C fuselage box can constructed side down building board add formrs install opposite side Check alignment planes triangles and/or squares epoxy cures Block up tail post 2 pull opposite post down onto epoxy Add cross members cabin fillers well firewall landing gear mount box still flat board care taken alignment early steps fuselage almost sure straight true landing gear blocks widened cutting 5/16-in slot drilling 5/32-in holes side blocks hole must front slot other rear bending 5/32in music wire gear might intimidating solidly anchored 4-in bench vise length 34-in pipe simplify chore rear wire functional model merely slides up down slot fuselage bottom torque bar principle combined half-flat Trexler airwheels will smooth out ghastly landings enough strength use spruce withoutmusic wire reinforce ment cabane structure might appear mar ginal has proven adequate model size weight once pranged similar project onto roof shed attempting stall turn low altitude nose section broke off first bulkhead wings disconnected bounced 10 ft cabin structure didnt much crack epoxy joints Believe cabanes stronger motor mount nose length drawing scale ifs smaller lighter engine used add inch nose did larger tank can also used extended nose course firewall construction directions will work either nose length Wings sections designed building flat notches leading edge can cut nicely jig saw blade reversed marks wood can face operator sawing Tip outlines can cut after wing completely assembled tip ribs fillers cut scrap sheet cemented place block-sanded contour bottom planking built wing board Add top planking after dihedral angles brass tube stubs music wire hook installed after panel has blocked up 1 root block-sanded resulting angle Pre-cut trial-fit spruce ply filler sections around tubing before epoxying units together Use ply cap ribs exactly position everything Clothespins spring type useful clamps holding ply against spars can use W-1 blanks have cut down planking change W-2 ribs Place plywood master rib overthe blank use guide Whether use shear webs glass tape center section depends size engine 40 engine used added strength may needed original model 35 didnt need reinforcement 30 would ideal 40 would need idle very slowly order successfully perform touch-and-goes Continued page 108 26 Model Aviation Full-scale Scale model Flight shots Bob Corns exhibit remarkable realism Only exhaust radio switch give-aways its model Buildings really close top right pictelephoto lens just makes look like Model very forgiving nis prosusype ror ausnors mooda sine exampie 01 Inc aircrars resiorers art nc U Collect-Air Photos Photo packs other aircraft available Address article ILGAIN Losing control can night mare wrong response given command can take its toll model modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inCONTROl control nerves andyour///house radio service wallet Radio South wecan depend Radio know feel aboutUlSouth customer satisfaction hobby too aresnt just motto Its avidRCenthusiastswith e FubaOO~way nearly half century ofet us put back combined experience L1z/I1 ro Line 1925 E Creighton RoadPensacola FL 32504 904/478-6745 can horse around 3 mm. doing consecutive loops hammerheads invertedand still have time gain altitude good thermal flight come down short ofthe field can switch again plane purrs right feet Ace three-channel fits like glove Heinz goes need two battery packs stay up day long Data Astro 02 514 x 3 prop 4 x 12 Ah cells span 56 same Falcon 56 area 360 squares weight 24 oz loading 96 oz. length 31 Controls on-off rudder elevator no run fly-away RC jobs interference unexplained crashes would nice nothing happened less transmitter quits some goof-ball invades frequency strange things ether take over plane gets too far downwind away saved Believe device market several years can save airplane However talked name experts said Oh just something go wrong came conclusion true wed still flying Good brothers vacuum-tube single-channel 1948 escapements Well tell about own investigate miracle device manufactured CEL Electronics Harlow Ltd. Coachworks House River Way Harlow Essex CM 20P England called Electronic Fail-Safe Unit plugs between receiver servos Since works off receiver decoder passes normal signals through servos Should signals disrupted causing servos throw model Out control cease functioning device switches out receiver outputs switches preset control signals move servos safe positions As made functions three-wire servos positive pulse two milliseconds Being British recognize two familiar radio systems listed Futaba Sanwa its safe mode handles transmit ter receiever failures out-of-range inter ference another transmitter speech interference severe impulse ignition inter ference handlesup four channels channels requires second unit CEL claims whatever circumstances device will least give additional time seek recovery aircraft Address Miss Pamela Lee tell sent Before get ourselves Dutch recent description Bob Smurthwaites excellent Engel man spruce should give equal time Sig also has good stuff use too now Midwest Products announced two days ago written new spruce Samples look good indeed Also just received letter Tom Runge Ace discussing firms acquisition Pro Line Ace will continue fine tradition Pro Line Electronics once favorite experts select line systems Ace has versatile radio Silver 7 however kit form now will offer both firstline kit top quality ready-to-use system well Pro Line owners Ace will provide network approved service centers throughout worldwe presume existing Ace centers provide base no warranty work can done systems manufactured last corpo rate owner info address Pro Line Division Ace R/C Inc. 203 W 19th St Box 735 Higginsville MO 64037 Bill Winter 4330 ito Vista Dr Fairfax VA 22030 Rearwin Jr/Mathews Continued page 26 Junior struts model functional remarkably simple fabricate Sig SH 552 heavy duty devises rods soldered Onto 3/32-in music wire using short lengths brass tubing joiners wing panel inserted wing root tip blocked up proper dihedral angle boxes scrap wood Once proper angle established clevis/wire lengths fit solder joint Small tabs tin crimped soldered wire trimmed slide K&S airfoil tubing assembly secured PFC forced around tabs secures tube wire avoids rotation nut plates cut-down horns should secured interior Hot Stuff epoxy Once covering applied will accessible use devises horns provide some degree rigging degree washout washin can adjusted also make wing attachment super simple Always use two rubberbands between hooks case should break Radio installation After components structure completed install hard ware Adjust servo tray unit fore aft obtain center gravity CG approximately ahead finished point allows added weight covering finish aft CG ti x bass spruce cross beam can permanently secured fuselage sides sheet metal screws through ply sides receiver can placed under servos scrap ply box forward whichever helps CG proper location used Sullivan semi-flex pushrods whatever used anti-flex cross members should installed six inches used threaded clevis studs horn ends studs running EZ connectors servo ends Threaded studs can installed nylon pushrods very easily chucking -in drill blipping rod As exercise creative engineering originally connected ailerons servo pair Du- Bra * 190 balI links snaps adjusted throw varying holes used horns technique satisfactory until links accidently snapped wrong balls practical system subsequently installed using Du-Bro # 183 aileron connectors connector turned way up threaded rod remove wings Attaching wings requires opposite steps little practice wings can removed reinstalled minute two Covering finish fuselage proto type covered Sigs Koverall applied new novel manner painted framework outlines two coats 50% water 50% Elmers white glue allowed mix dry ironed Koverall Thats right ironed iron must set Coverite tempera ture generate enough heat pull white glue up fabrics weave Once its edges stick down very well can run iron over surface shrink fabric tightly Overlap areas require repeat coat first Continued page 110 108 Model Aviation FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995