Radio Control Soaring Dan Pruss JUST case word slipped dur ing past few months AMA Nationals will held Westover AFB Chicopee MA specifically Soaring event will grounds Smith & Wesson plant 1983 Dates Nats July 27 through August 4th Along reminder request Soaring Event Director Jeff Troy some help staff key workers has already contact Jeff re questing some part-time help work transmitter impound area some folks keep order winch sta tions jobs part-time wont miss turns flight line youre contestant have ever opportunity take Experimental Aircraft Associa tions EAA annual shindig Oshkosh WI youre probably aware lot organizations members help run show same thing goes AMA Nats Its membership makes work So want good Soaring event run AMA remember AMA youre able lend hand contact Jeff Allied Hobbies Y-12 King Prussia Plaza King Prussia PA 19406 phone 215 337-9737 Back May column quarter-scale ASW-20 shown described Its 3 001 oh almost-ready-to-fly bird few features worth passing guess could say strongest way build wing would construct one-piece unit Forget moment has transported Probably next-best way make three-piece wing one-piece center section plug-in tips version course easier cram town trolley transporting flying field common practical way break down wing both manufac turers scratch-builders course two-piece wing However once two halves joined together fuse lage usually takes spring rubberbands tape keep wings securely placewe hope ASW May column has solenoid toot-sw toh altogether different feature feature could applied two-wing systems photos tell story few highlights should pointed out photo four units sembly two tubes machined ends permanently mounted wing machined ends stick out wing ends fit tube has block around part assembly unlike wing assembly lot kits used solid dark rod picture inserted tubes added strength What makes assembly different about two notches better other tube-type assemblyis tube thats fuselage aluminum block runs through picture units note bare tube has slot cut through center dis 42 Model Aviation H ate long Dushrods elevator servo thls/4scaIeASW-20 mounted tin rod super-short Rudder has removed photo slick trickl Tony Spetebroots Falmouth MI winchlretriever setup works just tine Satety aesthetics uppermost design Round button photo R knee-switch tance about half its length alumi num block also features slot real ly makes clamp Now wings assembled three two shown Allen screws used tighten clamp squeezes slotted tube turn tightens around two wing tubes used model end result wing solid one-piece version no rubberbands springs mess up otherwise neat installation Another feature ASW-20 elevator control Most T-tail designs have either bellcrank about long ver tical fin flexible pushrod snakes its way through fuselage up fin elevator Andreas von Schoene beck designer producer model has better idea mount servo inside hinge line inside fin short pushrod directly link elevator Without doubt thats got easiest servo-to-surface connection yet course youre going use lightweight servo youre squeamish about using long servo extensions fear getting glitches gremlins RF chokes cable extensions still dont give easy feeling unit market will help relax streak skies Its called Glitch Buster Continued page 130 new locking-type wing-mount system described column Closeup L shows fuselage-mounted clamp-tube lock ing clamp Photo right shows system components wing rods joiner-rod dark-colored tube/clamp Photo top looks aft fuselage see system mounts plane Three screws lock wings tight theyre immovable Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 48 1/162331/161/408 3/322401/163/810 1/8 2431/161/214 3/162483/321/410 1/4 2563/323/812 1/323373/321/216 1/283371/81/809 1/1633749311/81/41116 3/3234458371/83/81218 1/8 ,35471451/81/21624 3/1636282553/183/161116 1/4 37395613/163/817 5/163853/161/22230 3/8 388124711/41/41524 1/2 31101551/43/81026 3/4 3165/41/22130 1/1645978481/43/43444 3/3247094561/4140 1/8 480106665185/162128 3/16483122753/83/82737 1/4 4110134843/81/23246 3/8 2253/83/44255 1/2 42252613/8152 MATCHED SHEETS4212 123653 12244682 332410412 158 184108585849 318412034 3467 144131 BALSA HOT LINE Call 806 745 6394 10am 6 pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSA TRIANGLES 36 1/41/425 3/83/830 1/21/234 3/43/445 1155 BALSA PLANKS36 1185 1 2150 13200 14280 11/23275 11/24360 22225 23325 24435 33495 34888 TAPERED SHEETS 36 1/4285 1/4385 3/8288 3/8388 1/23120 LONESTAREPOXY 9 zL/1--895 5 ,i598 lSr,i508 30 ,h598 LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/10349 3/32356 1/8367 316376 1/4385 3/83115 1/23139 3/43220 13300 1/16478 332491 1/84100 3/164117 1/44138 3/84207 1/24282 TRAILING EDGE 36 1/4132 5/161 1/439 3/81 1/246 1/2279 INSTANTGLUE 1 , Th/k298 1 z Thi298 2 z Thik550 2 z Thi550 BASSWOOD 3163/16 3/16 1/4 3/163/6 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/434 3/83/8 3/8 1/2 3/8 3/4 1/21/2 1/23/4 48 26 30 38 46 80 42 49 80 60 70 90 90 100 BUNDLE DEALS 20-1/6336685 20-1/16 4x 361020 20-3/32 336845 153/32436959 151/8336715 101/8436675 153/16338900 10-3/16436810 101/4336639 101/4436890 10-3/8 336850 5-3/8 436625 51/2336SAO 51/2436855 10-3/32448845 51/8448485 53/16448085 51/4448625 PINE STICKS 36 181/813 1/81418 183/820 3163/1617 3/163823 3161/230 141426 1/43/830 41/234 3/93637 48HARD MAPLE18 171/43/8 40 233/8 3/8 45 273/81/2 50 243/8 3/4 58 321/23/4 66 40 37 42BIRCH DOWELS36 471/809 523/1611 1/414 51625 SPRUCE STICKS 36 48 3832 18 1/8151/8 141824 1/8 3/82029 3163/162534 14 1/43145 14 393850 3/8 3/84563 3/8 125578 1/2 1/26080 12 346888 SPRUCE TRIANGLES 36 3/83/845 1/21/201 343/477 3PLYBIRCH48 1/6412525 1/3212425 1/1612435 1/812450 SPLV8IRCH48 3/3212570 1/812585 3/1812585 1/412600 July1985 43 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa GROOVED LG MOUNTS 12 Inches LITE PLY483/83/4/1/8/40 1/861503834/532/49 1/8123001/23/4/3/16/45 Handling Charge$3OO pay UPS Add $200 COD $300 extra PP APO FPO WacceotViafin -.&, MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995 accidental engaging winch should foot switch left Weve photos winch/retriever combi nation come Tony Spetebroote Falmouth MI No details construc tion provided except say its easy move about retrieving portion unit works fine like Burts circuit designed safety mind eliminating foot switch Tony points out accidental turning winch practically eliminated uses knee activate unit claims excellent results Well whatever safety features read about use launching hardware system 200-meter band saw its running Keep safe Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 responding advertisers mention read about Model Aviation RC Scale/Wischers Continued page 45 grinder Robarts Rough Tough car bide cutters make short work job An alternate method drill row holes file through remaining material Final finishing hole done sandpaper wrapped around short lengths woOd dowel various diameters preferred locating method alignment between cowl fuselage front means three four steel dowel pins made short lengths R-in-diameter music wire Holes pins drilled cowl backplate formet before foam cemented place certain accurate registry Final sanding match cowl fuselage done pins place High spots sanded down until fingertips can feel no change level Low spots built up Sig Epoxolite Hobbypoxy Stuff dowel system two machine screws needed secure cowl can threaded convenient spot such front ends engine mounts Will fly fellow transmitter hands about fly first RC Scale model asks himself foregoing question pilot has some basic knowledge RC flying skills has reasonable success trainer types answer certainly affirmative Build ers Scale models kits magazine plans have reason assured airplane will perform satisfactory manner no special piloting skills essential assumes course model accurately constructed has correct control surface travel proper weight distribution no warps overweight Any faults can send model back workshop plastic bag Inaccuracies show up unexpected places Wing tail surface incidence angles should checked during construc tion Making changes angles after model completed means builder must cut finished surfaces wing stabilizer temporarily fastened position fuselage model set up flat surface measurements made fuselage referContinued page 134 July 1985 131 OPSs Little Pride Joys. modeler takes pride owning quality engine OPS offers Ursus 60 RC SLA 40 RC Both engines have ABC piston sleeves Schnuerle por& - dual ball bearings come OPS slide valve carb muffler Check out OPS engines local hobby shop have engine will proud own Parts People Post Office Box 26247 Orleans Louisiana 70186 242-5967 IN STOCK FOR IMMEDIATE SHIPMENT NEW RA 505$19995 New Onedro 39 CDI$10995 Reg Onadra3fi $9996 Brloigholloflywheol$11995 Re9 Qoodro 36 Power Aooewbly Only$6490 QUADRA REPAIR$1000 pine porte Jin Meoser ERCOUPEPLANS $2396 KIT $23995 Jin Meoner TOMAHAWKPLANS $2396 KIT $29996 Jiw Mooner 9BALL TRAINERPLANS $1996 KIT $19996 BALSA end BASSWOOD oil oboeSig pricee Ieee 10% Now ZENDAH G-23 $13996ZENOAN G39 $ 9996 FLOATS 3915 0001noree $1796cowplene kit $3996 FLOATS4914ecole noree $2196oowplene kit $4796 19 90W WHEELS 3995 P&W CVIS FLEET5$2596 PLANS SUPER STEARMAN 14 Godfrey$2995 STARDUSTER TOO 14 IBrieIgheIlo 13 J3 CUB Nelit$2995 VOLKSPLANE 13 Chicken ChorIle02395 COCKPIT KITS Towohnwk F4U1 Spitfire ME199$2395 Erneepo Fleet J3 Cob P95 P47 C 5091092195 Citebrie $2495 Zero $2995 Zero enferior$1095 US Doedro FUEL TANKS16 $99632 no $795 FIBERGLASSARROWSHAFTSB16n23long9$1996 24-Hour Service. Add $250 postage Send Bank Check Money Order JIM MESSERS QUALTIY MODEL PRODUCTS Valley View Dr. Boo 43 Allegeny NY 14706 M52LMP1000 $2500 ca includes shippIng UPS COD add $200 $600 plans CA add 6% Dealer Inquiries invited LINDSEY MICRO PRODUCTS 160-A No Fairview Ave SuIte 104 Goieta CA 93117 805 683 2042 After 5 pm PaCIfiC Both require TWO Channel Radio Mini Servos 250 MAH BATT wood construction include hardware needed
Edition: Model Aviation - 1985/07
Page Numbers: 42, 43, 130, 131
Radio Control Soaring Dan Pruss JUST case word slipped dur ing past few months AMA Nationals will held Westover AFB Chicopee MA specifically Soaring event will grounds Smith & Wesson plant 1983 Dates Nats July 27 through August 4th Along reminder request Soaring Event Director Jeff Troy some help staff key workers has already contact Jeff re questing some part-time help work transmitter impound area some folks keep order winch sta tions jobs part-time wont miss turns flight line youre contestant have ever opportunity take Experimental Aircraft Associa tions EAA annual shindig Oshkosh WI youre probably aware lot organizations members help run show same thing goes AMA Nats Its membership makes work So want good Soaring event run AMA remember AMA youre able lend hand contact Jeff Allied Hobbies Y-12 King Prussia Plaza King Prussia PA 19406 phone 215 337-9737 Back May column quarter-scale ASW-20 shown described Its 3 001 oh almost-ready-to-fly bird few features worth passing guess could say strongest way build wing would construct one-piece unit Forget moment has transported Probably next-best way make three-piece wing one-piece center section plug-in tips version course easier cram town trolley transporting flying field common practical way break down wing both manufac turers scratch-builders course two-piece wing However once two halves joined together fuse lage usually takes spring rubberbands tape keep wings securely placewe hope ASW May column has solenoid toot-sw toh altogether different feature feature could applied two-wing systems photos tell story few highlights should pointed out photo four units sembly two tubes machined ends permanently mounted wing machined ends stick out wing ends fit tube has block around part assembly unlike wing assembly lot kits used solid dark rod picture inserted tubes added strength What makes assembly different about two notches better other tube-type assemblyis tube thats fuselage aluminum block runs through picture units note bare tube has slot cut through center dis 42 Model Aviation H ate long Dushrods elevator servo thls/4scaIeASW-20 mounted tin rod super-short Rudder has removed photo slick trickl Tony Spetebroots Falmouth MI winchlretriever setup works just tine Satety aesthetics uppermost design Round button photo R knee-switch tance about half its length alumi num block also features slot real ly makes clamp Now wings assembled three two shown Allen screws used tighten clamp squeezes slotted tube turn tightens around two wing tubes used model end result wing solid one-piece version no rubberbands springs mess up otherwise neat installation Another feature ASW-20 elevator control Most T-tail designs have either bellcrank about long ver tical fin flexible pushrod snakes its way through fuselage up fin elevator Andreas von Schoene beck designer producer model has better idea mount servo inside hinge line inside fin short pushrod directly link elevator Without doubt thats got easiest servo-to-surface connection yet course youre going use lightweight servo youre squeamish about using long servo extensions fear getting glitches gremlins RF chokes cable extensions still dont give easy feeling unit market will help relax streak skies Its called Glitch Buster Continued page 130 new locking-type wing-mount system described column Closeup L shows fuselage-mounted clamp-tube lock ing clamp Photo right shows system components wing rods joiner-rod dark-colored tube/clamp Photo top looks aft fuselage see system mounts plane Three screws lock wings tight theyre immovable Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 48 1/162331/161/408 3/322401/163/810 1/8 2431/161/214 3/162483/321/410 1/4 2563/323/812 1/323373/321/216 1/283371/81/809 1/1633749311/81/41116 3/3234458371/83/81218 1/8 ,35471451/81/21624 3/1636282553/183/161116 1/4 37395613/163/817 5/163853/161/22230 3/8 388124711/41/41524 1/2 31101551/43/81026 3/4 3165/41/22130 1/1645978481/43/43444 3/3247094561/4140 1/8 480106665185/162128 3/16483122753/83/82737 1/4 4110134843/81/23246 3/8 2253/83/44255 1/2 42252613/8152 MATCHED SHEETS4212 123653 12244682 332410412 158 184108585849 318412034 3467 144131 BALSA HOT LINE Call 806 745 6394 10am 6 pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSA TRIANGLES 36 1/41/425 3/83/830 1/21/234 3/43/445 1155 BALSA PLANKS36 1185 1 2150 13200 14280 11/23275 11/24360 22225 23325 24435 33495 34888 TAPERED SHEETS 36 1/4285 1/4385 3/8288 3/8388 1/23120 LONESTAREPOXY 9 zL/1--895 5 ,i598 lSr,i508 30 ,h598 LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/10349 3/32356 1/8367 316376 1/4385 3/83115 1/23139 3/43220 13300 1/16478 332491 1/84100 3/164117 1/44138 3/84207 1/24282 TRAILING EDGE 36 1/4132 5/161 1/439 3/81 1/246 1/2279 INSTANTGLUE 1 , Th/k298 1 z Thi298 2 z Thik550 2 z Thi550 BASSWOOD 3163/16 3/16 1/4 3/163/6 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/434 3/83/8 3/8 1/2 3/8 3/4 1/21/2 1/23/4 48 26 30 38 46 80 42 49 80 60 70 90 90 100 BUNDLE DEALS 20-1/6336685 20-1/16 4x 361020 20-3/32 336845 153/32436959 151/8336715 101/8436675 153/16338900 10-3/16436810 101/4336639 101/4436890 10-3/8 336850 5-3/8 436625 51/2336SAO 51/2436855 10-3/32448845 51/8448485 53/16448085 51/4448625 PINE STICKS 36 181/813 1/81418 183/820 3163/1617 3/163823 3161/230 141426 1/43/830 41/234 3/93637 48HARD MAPLE18 171/43/8 40 233/8 3/8 45 273/81/2 50 243/8 3/4 58 321/23/4 66 40 37 42BIRCH DOWELS36 471/809 523/1611 1/414 51625 SPRUCE STICKS 36 48 3832 18 1/8151/8 141824 1/8 3/82029 3163/162534 14 1/43145 14 393850 3/8 3/84563 3/8 125578 1/2 1/26080 12 346888 SPRUCE TRIANGLES 36 3/83/845 1/21/201 343/477 3PLYBIRCH48 1/6412525 1/3212425 1/1612435 1/812450 SPLV8IRCH48 3/3212570 1/812585 3/1812585 1/412600 July1985 43 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa GROOVED LG MOUNTS 12 Inches LITE PLY483/83/4/1/8/40 1/861503834/532/49 1/8123001/23/4/3/16/45 Handling Charge$3OO pay UPS Add $200 COD $300 extra PP APO FPO WacceotViafin -.&, MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995 accidental engaging winch should foot switch left Weve photos winch/retriever combi nation come Tony Spetebroote Falmouth MI No details construc tion provided except say its easy move about retrieving portion unit works fine like Burts circuit designed safety mind eliminating foot switch Tony points out accidental turning winch practically eliminated uses knee activate unit claims excellent results Well whatever safety features read about use launching hardware system 200-meter band saw its running Keep safe Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 responding advertisers mention read about Model Aviation RC Scale/Wischers Continued page 45 grinder Robarts Rough Tough car bide cutters make short work job An alternate method drill row holes file through remaining material Final finishing hole done sandpaper wrapped around short lengths woOd dowel various diameters preferred locating method alignment between cowl fuselage front means three four steel dowel pins made short lengths R-in-diameter music wire Holes pins drilled cowl backplate formet before foam cemented place certain accurate registry Final sanding match cowl fuselage done pins place High spots sanded down until fingertips can feel no change level Low spots built up Sig Epoxolite Hobbypoxy Stuff dowel system two machine screws needed secure cowl can threaded convenient spot such front ends engine mounts Will fly fellow transmitter hands about fly first RC Scale model asks himself foregoing question pilot has some basic knowledge RC flying skills has reasonable success trainer types answer certainly affirmative Build ers Scale models kits magazine plans have reason assured airplane will perform satisfactory manner no special piloting skills essential assumes course model accurately constructed has correct control surface travel proper weight distribution no warps overweight Any faults can send model back workshop plastic bag Inaccuracies show up unexpected places Wing tail surface incidence angles should checked during construc tion Making changes angles after model completed means builder must cut finished surfaces wing stabilizer temporarily fastened position fuselage model set up flat surface measurements made fuselage referContinued page 134 July 1985 131 OPSs Little Pride Joys. modeler takes pride owning quality engine OPS offers Ursus 60 RC SLA 40 RC Both engines have ABC piston sleeves Schnuerle por& - dual ball bearings come OPS slide valve carb muffler Check out OPS engines local hobby shop have engine will proud own Parts People Post Office Box 26247 Orleans Louisiana 70186 242-5967 IN STOCK FOR IMMEDIATE SHIPMENT NEW RA 505$19995 New Onedro 39 CDI$10995 Reg Onadra3fi $9996 Brloigholloflywheol$11995 Re9 Qoodro 36 Power Aooewbly Only$6490 QUADRA REPAIR$1000 pine porte Jin Meoser ERCOUPEPLANS $2396 KIT $23995 Jin Meoner TOMAHAWKPLANS $2396 KIT $29996 Jiw Mooner 9BALL TRAINERPLANS $1996 KIT $19996 BALSA end BASSWOOD oil oboeSig pricee Ieee 10% Now ZENDAH G-23 $13996ZENOAN G39 $ 9996 FLOATS 3915 0001noree $1796cowplene kit $3996 FLOATS4914ecole noree $2196oowplene kit $4796 19 90W WHEELS 3995 P&W CVIS FLEET5$2596 PLANS SUPER STEARMAN 14 Godfrey$2995 STARDUSTER TOO 14 IBrieIgheIlo 13 J3 CUB Nelit$2995 VOLKSPLANE 13 Chicken ChorIle02395 COCKPIT KITS Towohnwk F4U1 Spitfire ME199$2395 Erneepo Fleet J3 Cob P95 P47 C 5091092195 Citebrie $2495 Zero $2995 Zero enferior$1095 US Doedro FUEL TANKS16 $99632 no $795 FIBERGLASSARROWSHAFTSB16n23long9$1996 24-Hour Service. Add $250 postage Send Bank Check Money Order JIM MESSERS QUALTIY MODEL PRODUCTS Valley View Dr. Boo 43 Allegeny NY 14706 M52LMP1000 $2500 ca includes shippIng UPS COD add $200 $600 plans CA add 6% Dealer Inquiries invited LINDSEY MICRO PRODUCTS 160-A No Fairview Ave SuIte 104 Goieta CA 93117 805 683 2042 After 5 pm PaCIfiC Both require TWO Channel Radio Mini Servos 250 MAH BATT wood construction include hardware needed
Edition: Model Aviation - 1985/07
Page Numbers: 42, 43, 130, 131
Radio Control Soaring Dan Pruss JUST case word slipped dur ing past few months AMA Nationals will held Westover AFB Chicopee MA specifically Soaring event will grounds Smith & Wesson plant 1983 Dates Nats July 27 through August 4th Along reminder request Soaring Event Director Jeff Troy some help staff key workers has already contact Jeff re questing some part-time help work transmitter impound area some folks keep order winch sta tions jobs part-time wont miss turns flight line youre contestant have ever opportunity take Experimental Aircraft Associa tions EAA annual shindig Oshkosh WI youre probably aware lot organizations members help run show same thing goes AMA Nats Its membership makes work So want good Soaring event run AMA remember AMA youre able lend hand contact Jeff Allied Hobbies Y-12 King Prussia Plaza King Prussia PA 19406 phone 215 337-9737 Back May column quarter-scale ASW-20 shown described Its 3 001 oh almost-ready-to-fly bird few features worth passing guess could say strongest way build wing would construct one-piece unit Forget moment has transported Probably next-best way make three-piece wing one-piece center section plug-in tips version course easier cram town trolley transporting flying field common practical way break down wing both manufac turers scratch-builders course two-piece wing However once two halves joined together fuse lage usually takes spring rubberbands tape keep wings securely placewe hope ASW May column has solenoid toot-sw toh altogether different feature feature could applied two-wing systems photos tell story few highlights should pointed out photo four units sembly two tubes machined ends permanently mounted wing machined ends stick out wing ends fit tube has block around part assembly unlike wing assembly lot kits used solid dark rod picture inserted tubes added strength What makes assembly different about two notches better other tube-type assemblyis tube thats fuselage aluminum block runs through picture units note bare tube has slot cut through center dis 42 Model Aviation H ate long Dushrods elevator servo thls/4scaIeASW-20 mounted tin rod super-short Rudder has removed photo slick trickl Tony Spetebroots Falmouth MI winchlretriever setup works just tine Satety aesthetics uppermost design Round button photo R knee-switch tance about half its length alumi num block also features slot real ly makes clamp Now wings assembled three two shown Allen screws used tighten clamp squeezes slotted tube turn tightens around two wing tubes used model end result wing solid one-piece version no rubberbands springs mess up otherwise neat installation Another feature ASW-20 elevator control Most T-tail designs have either bellcrank about long ver tical fin flexible pushrod snakes its way through fuselage up fin elevator Andreas von Schoene beck designer producer model has better idea mount servo inside hinge line inside fin short pushrod directly link elevator Without doubt thats got easiest servo-to-surface connection yet course youre going use lightweight servo youre squeamish about using long servo extensions fear getting glitches gremlins RF chokes cable extensions still dont give easy feeling unit market will help relax streak skies Its called Glitch Buster Continued page 130 new locking-type wing-mount system described column Closeup L shows fuselage-mounted clamp-tube lock ing clamp Photo right shows system components wing rods joiner-rod dark-colored tube/clamp Photo top looks aft fuselage see system mounts plane Three screws lock wings tight theyre immovable Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 48 1/162331/161/408 3/322401/163/810 1/8 2431/161/214 3/162483/321/410 1/4 2563/323/812 1/323373/321/216 1/283371/81/809 1/1633749311/81/41116 3/3234458371/83/81218 1/8 ,35471451/81/21624 3/1636282553/183/161116 1/4 37395613/163/817 5/163853/161/22230 3/8 388124711/41/41524 1/2 31101551/43/81026 3/4 3165/41/22130 1/1645978481/43/43444 3/3247094561/4140 1/8 480106665185/162128 3/16483122753/83/82737 1/4 4110134843/81/23246 3/8 2253/83/44255 1/2 42252613/8152 MATCHED SHEETS4212 123653 12244682 332410412 158 184108585849 318412034 3467 144131 BALSA HOT LINE Call 806 745 6394 10am 6 pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSA TRIANGLES 36 1/41/425 3/83/830 1/21/234 3/43/445 1155 BALSA PLANKS36 1185 1 2150 13200 14280 11/23275 11/24360 22225 23325 24435 33495 34888 TAPERED SHEETS 36 1/4285 1/4385 3/8288 3/8388 1/23120 LONESTAREPOXY 9 zL/1--895 5 ,i598 lSr,i508 30 ,h598 LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/10349 3/32356 1/8367 316376 1/4385 3/83115 1/23139 3/43220 13300 1/16478 332491 1/84100 3/164117 1/44138 3/84207 1/24282 TRAILING EDGE 36 1/4132 5/161 1/439 3/81 1/246 1/2279 INSTANTGLUE 1 , Th/k298 1 z Thi298 2 z Thik550 2 z Thi550 BASSWOOD 3163/16 3/16 1/4 3/163/6 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/434 3/83/8 3/8 1/2 3/8 3/4 1/21/2 1/23/4 48 26 30 38 46 80 42 49 80 60 70 90 90 100 BUNDLE DEALS 20-1/6336685 20-1/16 4x 361020 20-3/32 336845 153/32436959 151/8336715 101/8436675 153/16338900 10-3/16436810 101/4336639 101/4436890 10-3/8 336850 5-3/8 436625 51/2336SAO 51/2436855 10-3/32448845 51/8448485 53/16448085 51/4448625 PINE STICKS 36 181/813 1/81418 183/820 3163/1617 3/163823 3161/230 141426 1/43/830 41/234 3/93637 48HARD MAPLE18 171/43/8 40 233/8 3/8 45 273/81/2 50 243/8 3/4 58 321/23/4 66 40 37 42BIRCH DOWELS36 471/809 523/1611 1/414 51625 SPRUCE STICKS 36 48 3832 18 1/8151/8 141824 1/8 3/82029 3163/162534 14 1/43145 14 393850 3/8 3/84563 3/8 125578 1/2 1/26080 12 346888 SPRUCE TRIANGLES 36 3/83/845 1/21/201 343/477 3PLYBIRCH48 1/6412525 1/3212425 1/1612435 1/812450 SPLV8IRCH48 3/3212570 1/812585 3/1812585 1/412600 July1985 43 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa GROOVED LG MOUNTS 12 Inches LITE PLY483/83/4/1/8/40 1/861503834/532/49 1/8123001/23/4/3/16/45 Handling Charge$3OO pay UPS Add $200 COD $300 extra PP APO FPO WacceotViafin -.&, MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995 accidental engaging winch should foot switch left Weve photos winch/retriever combi nation come Tony Spetebroote Falmouth MI No details construc tion provided except say its easy move about retrieving portion unit works fine like Burts circuit designed safety mind eliminating foot switch Tony points out accidental turning winch practically eliminated uses knee activate unit claims excellent results Well whatever safety features read about use launching hardware system 200-meter band saw its running Keep safe Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 responding advertisers mention read about Model Aviation RC Scale/Wischers Continued page 45 grinder Robarts Rough Tough car bide cutters make short work job An alternate method drill row holes file through remaining material Final finishing hole done sandpaper wrapped around short lengths woOd dowel various diameters preferred locating method alignment between cowl fuselage front means three four steel dowel pins made short lengths R-in-diameter music wire Holes pins drilled cowl backplate formet before foam cemented place certain accurate registry Final sanding match cowl fuselage done pins place High spots sanded down until fingertips can feel no change level Low spots built up Sig Epoxolite Hobbypoxy Stuff dowel system two machine screws needed secure cowl can threaded convenient spot such front ends engine mounts Will fly fellow transmitter hands about fly first RC Scale model asks himself foregoing question pilot has some basic knowledge RC flying skills has reasonable success trainer types answer certainly affirmative Build ers Scale models kits magazine plans have reason assured airplane will perform satisfactory manner no special piloting skills essential assumes course model accurately constructed has correct control surface travel proper weight distribution no warps overweight Any faults can send model back workshop plastic bag Inaccuracies show up unexpected places Wing tail surface incidence angles should checked during construc tion Making changes angles after model completed means builder must cut finished surfaces wing stabilizer temporarily fastened position fuselage model set up flat surface measurements made fuselage referContinued page 134 July 1985 131 OPSs Little Pride Joys. modeler takes pride owning quality engine OPS offers Ursus 60 RC SLA 40 RC Both engines have ABC piston sleeves Schnuerle por& - dual ball bearings come OPS slide valve carb muffler Check out OPS engines local hobby shop have engine will proud own Parts People Post Office Box 26247 Orleans Louisiana 70186 242-5967 IN STOCK FOR IMMEDIATE SHIPMENT NEW RA 505$19995 New Onedro 39 CDI$10995 Reg Onadra3fi $9996 Brloigholloflywheol$11995 Re9 Qoodro 36 Power Aooewbly Only$6490 QUADRA REPAIR$1000 pine porte Jin Meoser ERCOUPEPLANS $2396 KIT $23995 Jin Meoner TOMAHAWKPLANS $2396 KIT $29996 Jiw Mooner 9BALL TRAINERPLANS $1996 KIT $19996 BALSA end BASSWOOD oil oboeSig pricee Ieee 10% Now ZENDAH G-23 $13996ZENOAN G39 $ 9996 FLOATS 3915 0001noree $1796cowplene kit $3996 FLOATS4914ecole noree $2196oowplene kit $4796 19 90W WHEELS 3995 P&W CVIS FLEET5$2596 PLANS SUPER STEARMAN 14 Godfrey$2995 STARDUSTER TOO 14 IBrieIgheIlo 13 J3 CUB Nelit$2995 VOLKSPLANE 13 Chicken ChorIle02395 COCKPIT KITS Towohnwk F4U1 Spitfire ME199$2395 Erneepo Fleet J3 Cob P95 P47 C 5091092195 Citebrie $2495 Zero $2995 Zero enferior$1095 US Doedro FUEL TANKS16 $99632 no $795 FIBERGLASSARROWSHAFTSB16n23long9$1996 24-Hour Service. Add $250 postage Send Bank Check Money Order JIM MESSERS QUALTIY MODEL PRODUCTS Valley View Dr. Boo 43 Allegeny NY 14706 M52LMP1000 $2500 ca includes shippIng UPS COD add $200 $600 plans CA add 6% Dealer Inquiries invited LINDSEY MICRO PRODUCTS 160-A No Fairview Ave SuIte 104 Goieta CA 93117 805 683 2042 After 5 pm PaCIfiC Both require TWO Channel Radio Mini Servos 250 MAH BATT wood construction include hardware needed
Edition: Model Aviation - 1985/07
Page Numbers: 42, 43, 130, 131
Radio Control Soaring Dan Pruss JUST case word slipped dur ing past few months AMA Nationals will held Westover AFB Chicopee MA specifically Soaring event will grounds Smith & Wesson plant 1983 Dates Nats July 27 through August 4th Along reminder request Soaring Event Director Jeff Troy some help staff key workers has already contact Jeff re questing some part-time help work transmitter impound area some folks keep order winch sta tions jobs part-time wont miss turns flight line youre contestant have ever opportunity take Experimental Aircraft Associa tions EAA annual shindig Oshkosh WI youre probably aware lot organizations members help run show same thing goes AMA Nats Its membership makes work So want good Soaring event run AMA remember AMA youre able lend hand contact Jeff Allied Hobbies Y-12 King Prussia Plaza King Prussia PA 19406 phone 215 337-9737 Back May column quarter-scale ASW-20 shown described Its 3 001 oh almost-ready-to-fly bird few features worth passing guess could say strongest way build wing would construct one-piece unit Forget moment has transported Probably next-best way make three-piece wing one-piece center section plug-in tips version course easier cram town trolley transporting flying field common practical way break down wing both manufac turers scratch-builders course two-piece wing However once two halves joined together fuse lage usually takes spring rubberbands tape keep wings securely placewe hope ASW May column has solenoid toot-sw toh altogether different feature feature could applied two-wing systems photos tell story few highlights should pointed out photo four units sembly two tubes machined ends permanently mounted wing machined ends stick out wing ends fit tube has block around part assembly unlike wing assembly lot kits used solid dark rod picture inserted tubes added strength What makes assembly different about two notches better other tube-type assemblyis tube thats fuselage aluminum block runs through picture units note bare tube has slot cut through center dis 42 Model Aviation H ate long Dushrods elevator servo thls/4scaIeASW-20 mounted tin rod super-short Rudder has removed photo slick trickl Tony Spetebroots Falmouth MI winchlretriever setup works just tine Satety aesthetics uppermost design Round button photo R knee-switch tance about half its length alumi num block also features slot real ly makes clamp Now wings assembled three two shown Allen screws used tighten clamp squeezes slotted tube turn tightens around two wing tubes used model end result wing solid one-piece version no rubberbands springs mess up otherwise neat installation Another feature ASW-20 elevator control Most T-tail designs have either bellcrank about long ver tical fin flexible pushrod snakes its way through fuselage up fin elevator Andreas von Schoene beck designer producer model has better idea mount servo inside hinge line inside fin short pushrod directly link elevator Without doubt thats got easiest servo-to-surface connection yet course youre going use lightweight servo youre squeamish about using long servo extensions fear getting glitches gremlins RF chokes cable extensions still dont give easy feeling unit market will help relax streak skies Its called Glitch Buster Continued page 130 new locking-type wing-mount system described column Closeup L shows fuselage-mounted clamp-tube lock ing clamp Photo right shows system components wing rods joiner-rod dark-colored tube/clamp Photo top looks aft fuselage see system mounts plane Three screws lock wings tight theyre immovable Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 48 1/162331/161/408 3/322401/163/810 1/8 2431/161/214 3/162483/321/410 1/4 2563/323/812 1/323373/321/216 1/283371/81/809 1/1633749311/81/41116 3/3234458371/83/81218 1/8 ,35471451/81/21624 3/1636282553/183/161116 1/4 37395613/163/817 5/163853/161/22230 3/8 388124711/41/41524 1/2 31101551/43/81026 3/4 3165/41/22130 1/1645978481/43/43444 3/3247094561/4140 1/8 480106665185/162128 3/16483122753/83/82737 1/4 4110134843/81/23246 3/8 2253/83/44255 1/2 42252613/8152 MATCHED SHEETS4212 123653 12244682 332410412 158 184108585849 318412034 3467 144131 BALSA HOT LINE Call 806 745 6394 10am 6 pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSA TRIANGLES 36 1/41/425 3/83/830 1/21/234 3/43/445 1155 BALSA PLANKS36 1185 1 2150 13200 14280 11/23275 11/24360 22225 23325 24435 33495 34888 TAPERED SHEETS 36 1/4285 1/4385 3/8288 3/8388 1/23120 LONESTAREPOXY 9 zL/1--895 5 ,i598 lSr,i508 30 ,h598 LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/10349 3/32356 1/8367 316376 1/4385 3/83115 1/23139 3/43220 13300 1/16478 332491 1/84100 3/164117 1/44138 3/84207 1/24282 TRAILING EDGE 36 1/4132 5/161 1/439 3/81 1/246 1/2279 INSTANTGLUE 1 , Th/k298 1 z Thi298 2 z Thik550 2 z Thi550 BASSWOOD 3163/16 3/16 1/4 3/163/6 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/434 3/83/8 3/8 1/2 3/8 3/4 1/21/2 1/23/4 48 26 30 38 46 80 42 49 80 60 70 90 90 100 BUNDLE DEALS 20-1/6336685 20-1/16 4x 361020 20-3/32 336845 153/32436959 151/8336715 101/8436675 153/16338900 10-3/16436810 101/4336639 101/4436890 10-3/8 336850 5-3/8 436625 51/2336SAO 51/2436855 10-3/32448845 51/8448485 53/16448085 51/4448625 PINE STICKS 36 181/813 1/81418 183/820 3163/1617 3/163823 3161/230 141426 1/43/830 41/234 3/93637 48HARD MAPLE18 171/43/8 40 233/8 3/8 45 273/81/2 50 243/8 3/4 58 321/23/4 66 40 37 42BIRCH DOWELS36 471/809 523/1611 1/414 51625 SPRUCE STICKS 36 48 3832 18 1/8151/8 141824 1/8 3/82029 3163/162534 14 1/43145 14 393850 3/8 3/84563 3/8 125578 1/2 1/26080 12 346888 SPRUCE TRIANGLES 36 3/83/845 1/21/201 343/477 3PLYBIRCH48 1/6412525 1/3212425 1/1612435 1/812450 SPLV8IRCH48 3/3212570 1/812585 3/1812585 1/412600 July1985 43 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa GROOVED LG MOUNTS 12 Inches LITE PLY483/83/4/1/8/40 1/861503834/532/49 1/8123001/23/4/3/16/45 Handling Charge$3OO pay UPS Add $200 COD $300 extra PP APO FPO WacceotViafin -.&, MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995 accidental engaging winch should foot switch left Weve photos winch/retriever combi nation come Tony Spetebroote Falmouth MI No details construc tion provided except say its easy move about retrieving portion unit works fine like Burts circuit designed safety mind eliminating foot switch Tony points out accidental turning winch practically eliminated uses knee activate unit claims excellent results Well whatever safety features read about use launching hardware system 200-meter band saw its running Keep safe Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 responding advertisers mention read about Model Aviation RC Scale/Wischers Continued page 45 grinder Robarts Rough Tough car bide cutters make short work job An alternate method drill row holes file through remaining material Final finishing hole done sandpaper wrapped around short lengths woOd dowel various diameters preferred locating method alignment between cowl fuselage front means three four steel dowel pins made short lengths R-in-diameter music wire Holes pins drilled cowl backplate formet before foam cemented place certain accurate registry Final sanding match cowl fuselage done pins place High spots sanded down until fingertips can feel no change level Low spots built up Sig Epoxolite Hobbypoxy Stuff dowel system two machine screws needed secure cowl can threaded convenient spot such front ends engine mounts Will fly fellow transmitter hands about fly first RC Scale model asks himself foregoing question pilot has some basic knowledge RC flying skills has reasonable success trainer types answer certainly affirmative Build ers Scale models kits magazine plans have reason assured airplane will perform satisfactory manner no special piloting skills essential assumes course model accurately constructed has correct control surface travel proper weight distribution no warps overweight Any faults can send model back workshop plastic bag Inaccuracies show up unexpected places Wing tail surface incidence angles should checked during construc tion Making changes angles after model completed means builder must cut finished surfaces wing stabilizer temporarily fastened position fuselage model set up flat surface measurements made fuselage referContinued page 134 July 1985 131 OPSs Little Pride Joys. modeler takes pride owning quality engine OPS offers Ursus 60 RC SLA 40 RC Both engines have ABC piston sleeves Schnuerle por& - dual ball bearings come OPS slide valve carb muffler Check out OPS engines local hobby shop have engine will proud own Parts People Post Office Box 26247 Orleans Louisiana 70186 242-5967 IN STOCK FOR IMMEDIATE SHIPMENT NEW RA 505$19995 New Onedro 39 CDI$10995 Reg Onadra3fi $9996 Brloigholloflywheol$11995 Re9 Qoodro 36 Power Aooewbly Only$6490 QUADRA REPAIR$1000 pine porte Jin Meoser ERCOUPEPLANS $2396 KIT $23995 Jin Meoner TOMAHAWKPLANS $2396 KIT $29996 Jiw Mooner 9BALL TRAINERPLANS $1996 KIT $19996 BALSA end BASSWOOD oil oboeSig pricee Ieee 10% Now ZENDAH G-23 $13996ZENOAN G39 $ 9996 FLOATS 3915 0001noree $1796cowplene kit $3996 FLOATS4914ecole noree $2196oowplene kit $4796 19 90W WHEELS 3995 P&W CVIS FLEET5$2596 PLANS SUPER STEARMAN 14 Godfrey$2995 STARDUSTER TOO 14 IBrieIgheIlo 13 J3 CUB Nelit$2995 VOLKSPLANE 13 Chicken ChorIle02395 COCKPIT KITS Towohnwk F4U1 Spitfire ME199$2395 Erneepo Fleet J3 Cob P95 P47 C 5091092195 Citebrie $2495 Zero $2995 Zero enferior$1095 US Doedro FUEL TANKS16 $99632 no $795 FIBERGLASSARROWSHAFTSB16n23long9$1996 24-Hour Service. Add $250 postage Send Bank Check Money Order JIM MESSERS QUALTIY MODEL PRODUCTS Valley View Dr. Boo 43 Allegeny NY 14706 M52LMP1000 $2500 ca includes shippIng UPS COD add $200 $600 plans CA add 6% Dealer Inquiries invited LINDSEY MICRO PRODUCTS 160-A No Fairview Ave SuIte 104 Goieta CA 93117 805 683 2042 After 5 pm PaCIfiC Both require TWO Channel Radio Mini Servos 250 MAH BATT wood construction include hardware needed