Radio Technique

Radio Technique George M Myers MY INVOLVEMENT Helicopters has taught public loves example have put RC Helicopter lawn people passing automobiles will stop folks will flock over neighborhood questions start flowing seems airplanes should have jets common view isnt very much interest airplanes propellers noseunless model happens large colorful Scale model other hand everyone sees full-scale helicopters flying overhead day public identfies Helicopters large small fact can fly model safely yard makes model attractive fly space bounded houses fences children animals cant run danger first meeting interference take RC Helicopter stiff wing flying field find yourself banished approach end runway Well can agree puddle exhaust fumes surround ing chopper disagreeable noise quieter airplanes generally continuous fear being struck main rotor attention engaged elsewhere reasonable real problem think jealousy Helicopter makes possible dimensions flying simply available stiff-wing pilots commonly-heard complaint can hover Somehow Helicop ters seen worthless unless looping rolling about sky like airplanes Its easier discount challenge leaming execute precise hovering flight leam Its also whole lot easier fly like airplane hover precisely experi ence important difference have keep closer airplane can see whats happening big disadvantage Heliboy see price keeping big fuel tank filled addition noise HP 61 resembles rotary lawnmower can bit hard neighbors wanted something bit quieter experiments have good reports Baron 20 Kalt evening picked up phone dialed Circus Hobbies toll-free number 800-634-6781 placed order just might Thirty-six hours later opening box UPS Blue Label fabulous necessary parts supplied neat plastic bags numbered correspond excellent instruction manual parts list 30 Model Aviation 000 000 THUD Another Heliboy starts munching turf pilot John Kanakos striped shirt gives last surge body English trying stave off inevitable Alert photography Bob Luby captures memorable moment John operates all-Helicopter hobby shop 43-ig Ditmars Blvd Astoria NY 11105 andluckily him stocks parts makes choppers John helps customers get machines adjusted trimmed although some things beyond adjustment Hes good sport though since gave George permission prlntthe photo Inside view SR 900 mAh battery pack showing cells glued together silicone cement electrically bonded strainrelieved welded metal straps note curve straps between cells thick slightly flex ible polyolefin shrink tube covers cells lengthwise completed pack allowing cells move tad case theyre squeezed somewhat installation George likes sne rrart IF-4 servo ror Helicopter use baii bearings above belowthe output gear wide coarse teeth gears 0-ring seals keep out trash isolated drive servo potentiometer pin sticking up behind inner bearing unseen features like servo amp outboard PNP transistors very substantial motor Overview Kraft Super Gyro installation Georges Baron 20 assembly drawing provided pinned over workbench during construction Metric hex wrenches provided screws About add No 1 cross-point screwdriver 13/64 open-end wrench plus bottle ZAP some paint parts count always exactly right bag empty knew time go next step Initial flights done Apollo D6C4SHM see Oct 82 RT radio gyro found machine surprisingly easy fly Circus Hobbies Baron 20 Apollo excellent combination can recom mend anyone contemplating start RC Helicopters However really bought machine could investigate following areas 1 Singlestick control Helicopters 2 XPO control Pitch Roll Yaw 3 Kraft Super Gyro currently least expensive mar ket 4 Watson RC-037 Stabilizer lightest easiest battery pack designed resist vibraton smaller high-rpm engine 5 SR 900 mAb battery pack same size 500 mAh pack 1 oz heavier 6 Kraft KPS-24 servos Helicopter use dual ball-bearings supporting output shaft feedback pot isolated output shaft 7 ABC engine muffled tuned-pipe Helicopters design self-protecting bad effects over-heating danger always present model Heli Actually last came first have old K&B 35cc 21 cu engine Macs muffled tuned pipe has flown several airplanes eg Tims Sunfli 4-20 seen August 1978 has power sport 40 K&B Speed fuel designed very quiet Its sound level 68 dB 60 dB environment measured 30 feet compari son air conditioning office puts 72 dB desk Everyone comments nice sound flight gives impression jet turbine reciprocating engine power gives Baron 20 produces breath taking vertical accelerations Im sure machine overpowered motor mounts came drilled tapped accept cooling fan fit prop drive washer well Ill probably have cut off remove plastic extension arm throttle provided also advice discard cut slot cooling shroud throttle Continued page 84 J PITCHSERVO CONTROL CONTROL 113B213AYAW MIXER 2 COLLECTIVEUNI 112A 112B fiIVE CONTROLA2 December 1982 31 George trieo sne Watson RC-037 Stabilizer different model tested Heliboysee RT September 1982 Circus NES-SOl servo Baron 20 500K pot signal lead added George provide convenient external gain adjustment Read column learn worked peek engine room Georges Baron 20 piece black plastic Mystic tape No 191 across back open cabin level starting pulley went long way toward keeping interior cabin clean George didnt use plastic throttle-arm extension camewith kithe cuts hole thecooling shroud useda straight pushrod 186 21s metal throttle arm claims improved throttle control reliability lot Functional diagram interconnecting Ace Silver Seven transmitter Myers Dual Mixer Radio Technique October 1980 February 1981 Helicopter use George dislikes crawling grass making running adjustments Helicopters assembledthis neatteststand stable usedtofeed people bedtoputthechopperatbeltheight convenienceand safety hes checking main-rotor tracking can also make engineadjustmentsand since machine high enough outof ground effect flightadjust ments An added advantage isthatthe rotordoesnt blow up lot dirt Elastic luggage straps hold Baron 20 down field kit car battery weight table down keep moving Note George wearing safety glassesvery wise working closeto rapidly rotating machinery Hes holding customized Ace Silver Seven transmitter Settle 21 oz Enough newest Lectra Starter* Quadra weighs 21 oz including rechargable nicad battery 25-50 starts between battery charges evening installation now possible starter mechanics ahead firewall Finest quality components used throughout Engine starter easily transferred model model Introductory Price $15995 Complete Mount Charger Also available assembled tested package overbalanced Quadra engine Call write prices Incorporated 615 So Gallatin Rd son TN 37 615 868-6811 Mon thru Sat am 500 pm R/C SALES REPAIR SERVICE FOR SERVICE HOBBY LOBBYAND EK LOGICTROL F UTA BA * HOBBY SHACK\W ROYAL- SPECIAL PURPOSE PRO LINEBATTERIES & CHARGERS 84 Model Aviation ROWS DESIGNS TODAY Air times no longer problem I n7Q.l1 SARATOGA W~J o GORGEOUS SCALELOOKING GLIDER 64 52 flying wejOht its solid-core composite foam spruce balsa cmv stab rudder CLCRR A3D EFFICIENT cansistantly able get 25% OR lORE AIR TIME tOan so-called state-oftheart hollow core polyhedral floaters ormance gap due largely faithfully repraduced INCOMPARABLE EPPLER 214 airfoil te RIOR RSPECT RATIO 4ING 17 134 wing CLEAlI EFFICIEST LISES AND DETAILING IN SCULPTED FIRERULUSS OSTIRE El CUNTROL CONFIGUORTION DDSUNG does base efficiency loss due spoilers Rather spoilers CINUSUNG FEATURES REOULUTIONURO lIiLTIFUNCTION AILERONS pop up about ggO landing control CorIiN speed control 450 positive flap WINUSONG CAll RE SPUT LANDED LIKE FEATHER ranging nut across sky flying between thermals ailerons refleoed up R match Rn optimum flap refleo yields highspeed airfoil across entire span maintaining precision separate flap ailerRo cOO U Cr01 ship has seen beliesed WINDOOIIG HIGhEST PERFORMANCE TUERMAL DURATION KIT ARAILARLE also EASIEST TO FLY MULTICRANNEL GLIDER have ever offered dont hose 0 great multichannel flyer GET GREAT PERFURMANCE ship osog however reconnended competent pilots Too can buy bigger OUG CANT DUO RETTER YOU CAIIT FUEl COME CLOSEU ri TENTH ANNIVERSARY SPECIAL ON RETAIL URDERS ONLY may deduct 15% retail price ordering factory direct complete glider kit Uffer good thru lan 30 1RRO used r discouvt 0 FREE UIORO TAPE available up RU $20 refundable depsoit pbs $100 shipping showing detail entire line gliders including new NIlIDUOIIG Great club veetingo just helping decide model best URS SW Canano Dr. Cemane Ia Wa place tighten securely Insert hole tail poRt block add washer bottom wheel collar Bend sweep axle install tail wheel Bend sEabilizer hold-down hooks place Ehe fuselage / 16-in music wire Install lower wing hold-down dowels Assemble main landing gear fuselage straps screws Install engine fuel tank radio associated hardware Screw aluminum cowl parts place Make up dummy exhausts epoxy place Mount tail assembly check align ment Trim build up stab key required assure alignment satisFied paint small witness marks matching up alignment subsequent assemblies Install top wing Check alignment fuselage lower wing includ ing equal gap wing tips Springing cabane strut assemblies will assist effort Finally install split dowel wing alignment keys bear against wing mount tubes Check balance point should beat 50% top wing chord Add lead ballast compart ment beneath engine necessary attempt fly tail-heavy model slight nose-heavy condition acceptable Make final check control travel Flight testing should done calm day least light winds prefer start takeoff roll about 25% 30% upelevator holds tail down good direc tional control ship will fly off tail-low attitude Relax up-elevator allow model climb shallow angle about 50 feet gain airspeed before starting first Rum airplane flies quite slowly has very docile stall characteristics should wary stalls until some practiced high altitude reducing power model slows quickly due its having much drag event dead engine get nose down maintain flying speed Landings purejoy Just flare out let settle Help keep US Male moving Radio Technique/Myers Continued page 31 pushrod see photo balance dont like ABC engine Helicopter because interference-fit between piston cylinder absolutely intolerant contamination must filter both fuel incoming air because trash engine will cause bind engine would better suited Helicopter piston modified low-tension Dykes rings Perhaps K&B will consider making such engine market develops addition Baron 20 uses belt starter engine has never easy start takes lot fun out situation Too bad order proceeed rest testing listed replaced Circus Apollo system Kraft flight pack composed SR 900 mAh battery Kraft item Kraft Super Gyro five Kraft KPS-24 servos controlling same Ace Silver Seven transmitter see columns August October 1980 February 1981 Watson RC-037 ob tained exchanging RC-036 described September 1982 installed KPS-24 modified purpose Taking easy parts first Kraft Super Gyro KPS-24 servos June 1982 column worked beautifully Theres really nothing say beyond fact plugged worked perfectly right start Likewise SR 900 mAh battery showed power Continued page 118 Patented SysOem 200 now available wish MB 61 ne new ovad gears Dealer Inquiries Invited * Send $100 today * complete catalog EASTCRAFT IDeductible first orderl PO Box 508- M7Irwin PA 15642 Speciality Products 412 864-4959 SALES RADIO SYSTEMS FUTABA ROYAL ACCESSORIES FOR MOST RADIOSJ SAILPLANE ENTHUSIASTS ENJOY TROUBLE-FREE FLYING WITH THE NEW POWRWII%ICH AND THE RETRIEVERDESIGNED FOR EASE OF HANDLING AND THOROUGHLY TESTED BY MODELERS IN THE FIELD THE POWR WINCH WILL LAUNCH ANY SIZE SAILPLANE TO MAXIMUM HEIGHT WITH FAST EASY OPERATION AND FOR THE FIRST TIME LAUNCH-AMINUTE IS POSSIBLE USING THE RETRIEVER NO WAITING-NO WALKING NO NONSENSE Write call information FUEL fuel teBlue Flame give youedge performance BLUE FLAME fuels made highest quality ingredients give engine Best Performance Longest Life No COD FOB Englewood Check Chargecard Money Order Only Send FREE Catalog Shipp4ng Cost Per Case UPS Call UPS zone 2-426 3-513 4-630 5-759 6-946 7-1148 8- 1376 2672 WEST HAMPOEN / ENGLEWOOD CO 80110 PHONE 303 789-9411 Radio Technique/Myers p 84 advertised contain above excellent choices 20-powered Helicopter based fact Circus NES 50 1/502 servos using earlier have similar size weight power output Ill have go record estimating will perform just well usual 61-powered machines Perhaps should mention some special features of above products SR battery pack available SR Batteries Inc Box 287 Bellport NY 11713 customassembled modelers Larry Sribnick special batteries made severe aerospace applications Aside obvious fact constructed pack 50% charge usual volume batteries also feature spring-loaded resealable vent-valve welded internal connections reasealable vent-valve important because removes primary causes pre mature battery pack failure CO-2 poisoning introduced overcharging causes usual beer-can punch open non resealable vent batteries used practically other RC nickel-cadmium packs SR packs welded internal connections remove most-common cause RC battery pack failure open-circuit cell resulting slippage usual crimped internal connec tions addition external connections tween batteries made special welded metal straps So much additional performance theyre competitively-priced well $2395 Kraft plug plan replace flight packs SR batteries hope itll just before fail Youve heard discuss frame-time sensitivity servos before KPS-24 doesnt have What means will get exactly same output torque servo whether plugged 2-channel Sailplane race-car system plugged 8channel Super Set Most servos dont act way compari son KPS-33 Bantam Super Midget optimized RC race-car systems produces its maximum torque controlled 2channel system having frame time 15 milli seconds Although will work plugged 7-channel Kraft system has frame time order 22 milliseconds output torque will reduced 20% 25% Most servos exhibit frame-time sensitivity some extent KPS-24 first Ive ever tested shows absolutely thus truly universal servo Couple fact dual hall-bearing supports output shaft isolated feedback pot think have excellent all-around servo design Kraft Super Gyro highly-refined device featuring Hall-effect transducer ball bearinged gymbals both should reduce required maintenance minimum doesnt have switch-panel sensivitity adjust ments in-flight ON/OFF switching capability Circus NEJ-l00 Gyrosensor also uses Hall-effect transducer hall-bearings draws about 20 mA less can take choice Both gyros excellent Watson Stbilizer RC-037 pitchfork con figuration showed less acoustic feedback almost no lateral sensitivity advertised Un fortunately report installation Circus NES-SOl servo first such conver sion made Watson Industries set gain high unusable tried putting 500K pot series signal lead cut $300Q-9 t$25000 * less batterycempemATieNplus shipping pshippingONE WOOD LANEMALVERNPA1935S 2151 644-0692 4 Gallon Case MIX OR MATCH PER GALLONDrum 5%$535 10%$605 15%$870 90ARSO Made wIth blend mynthetlc caster beat posIbIe lubricatIon DeWigent actIon cut varnish wIth muffler Write call latest drum r SOUTHERN PRO RETRACTS SERVOFormerly ACTUATEDPRO-LINE FORand RELIABILITYSOUTHERN H/C IF THE RADIO WORKS THE LANDING GEAR WORKS IF THE RADIO DOESNT WORK IT DOESNT MATTER SEE YOUR DEALER DR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 513 738-1576 IL AIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience H5 925 E Creighton Road ONIRON modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Authorized sales vice JR-PROPO radio equipment imported Circus Hobbies Pensacola FL 32504 904/478-6745 Line_ down Sensitivitywhich workedbut brought some kind RF pickup inter fered control Just fair unit transferred RC 037 Heliboy RC system has room spread Out worked perfectly got point could fly right-hand no yaw input So guess message need some separation between Watson Stabilizer rest RC system components About inch foam does job Heliboy didnt have room crowded cabin Baron 20 Finally set up Ace Silver Seven similarly Apollo system ACC function tried several flights XPO function set middle curve three offered Ace hoped could set machine up limited control sticks midrange hovering maximum control outer range aerobatics XPO working pitch roll yaw unhappy Ill work some right now prefer Linear control same vein single-stick control seems logical just didnt work can fly machine will take some hours practice before can say Im really com fortable method madness people Ive met fly both Helicopters stitfwing aircraft have complained flying degrades performance other believe same thing has happened put cause down fact Ive flying both types machine same 2-stick box Thats OK same type control movements will produce loops rolls its bad nothing stiff-wing flying relates hovering bang sticks around lot hoveringyou dont have much use precise proportional control So order get over years proportional training reflexes thought might good idea fly Helicopters box thatfeels dUferent might train reflexes respond according feel transmitter well eye-hand coordination Only time will tell can made work Faye Peoples RC Helicopter pioneer best chopper pilots around flies single-stick spoke him East Coast Helicopter Championships held Lincroft NJ Horace Hagan CD August 15 1982 Faye said has spent past year flying Sailplanes Helicopter flying worse its years forgot ask what kind box used Sailplanes Ive overrun page limit again Keep letters coming folks George M Myers 70 Froeblich Farm Rd Hicks tille NY 11801 MAA Fly-In/Beckman Continued page 36 part Bryon Godbersons home could overlook get pictures almost overwhelming panorama Fun-Fly Festival pictures included fall far short really illustrating tremendous event Future IMAA Fun-Fly Festivals may exceed number participants number aircraft whatever will never equal impact 2nd Annual extravaganza Model Books/Hannan Continued page 39 model design Walt Mooney inci dentally have folks thank Bill Winter inspiring endeavor Carl Wheeley seeing through publication readers letters comments What next John Brown Japan being written scouring countryside inscrutable modeling publications Already have form Mr Tatebayashis charming catapult glider book supplied complete construction materials launch ing rubber An English translation version expected follow soon Yours truly Well another book under con sideration meanwhile its great actually building models again OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING INTRODUCING THE TM PAT PENDING new completely revolutionary concept ot power br glow plugs modet cars boats air ptanes heticopters anything using 15 Standard plug tor gtow engines Rechar up 1000 times Fits poc t k ways inverted Fitst bug Head Lock TM plug *ig propeller C c g 4structions 90 day guarantee terAb hing tails normal usag wi 0air replace 56 rc ne Ill full yeart SEE YOUR L L US- BANK CARDS OK COD $2195 See Dealer SERVICE703435-5805 13506 Glendundee Dr Herndon VA 22071 December 1982 119 Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Thplanes5 awards Scale 21 Engine 60 Send 75C latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr wiIliamsilIe NY 14221 71 8632-4838

Radio Technique George M Myers MY INVOLVEMENT Helicopters has taught public loves example have put RC Helicopter lawn people passing automobiles will stop folks will flock over neighborhood questions start flowing seems airplanes should have jets common view isnt very much interest airplanes propellers noseunless model happens large colorful Scale model other hand everyone sees full-scale helicopters flying overhead day public identfies Helicopters large small fact can fly model safely yard makes model attractive fly space bounded houses fences children animals cant run danger first meeting interference take RC Helicopter stiff wing flying field find yourself banished approach end runway Well can agree puddle exhaust fumes surround ing chopper disagreeable noise quieter airplanes generally continuous fear being struck main rotor attention engaged elsewhere reasonable real problem think jealousy Helicopter makes possible dimensions flying simply available stiff-wing pilots commonly-heard complaint can hover Somehow Helicop ters seen worthless unless looping rolling about sky like airplanes Its easier discount challenge leaming execute precise hovering flight leam Its also whole lot easier fly like airplane hover precisely experi ence important difference have keep closer airplane can see whats happening big disadvantage Heliboy see price keeping big fuel tank filled addition noise HP 61 resembles rotary lawnmower can bit hard neighbors wanted something bit quieter experiments have good reports Baron 20 Kalt evening picked up phone dialed Circus Hobbies toll-free number 800-634-6781 placed order just might Thirty-six hours later opening box UPS Blue Label fabulous necessary parts supplied neat plastic bags numbered correspond excellent instruction manual parts list 30 Model Aviation 000 000 THUD Another Heliboy starts munching turf pilot John Kanakos striped shirt gives last surge body English trying stave off inevitable Alert photography Bob Luby captures memorable moment John operates all-Helicopter hobby shop 43-ig Ditmars Blvd Astoria NY 11105 andluckily him stocks parts makes choppers John helps customers get machines adjusted trimmed although some things beyond adjustment Hes good sport though since gave George permission prlntthe photo Inside view SR 900 mAh battery pack showing cells glued together silicone cement electrically bonded strainrelieved welded metal straps note curve straps between cells thick slightly flex ible polyolefin shrink tube covers cells lengthwise completed pack allowing cells move tad case theyre squeezed somewhat installation George likes sne rrart IF-4 servo ror Helicopter use baii bearings above belowthe output gear wide coarse teeth gears 0-ring seals keep out trash isolated drive servo potentiometer pin sticking up behind inner bearing unseen features like servo amp outboard PNP transistors very substantial motor Overview Kraft Super Gyro installation Georges Baron 20 assembly drawing provided pinned over workbench during construction Metric hex wrenches provided screws About add No 1 cross-point screwdriver 13/64 open-end wrench plus bottle ZAP some paint parts count always exactly right bag empty knew time go next step Initial flights done Apollo D6C4SHM see Oct 82 RT radio gyro found machine surprisingly easy fly Circus Hobbies Baron 20 Apollo excellent combination can recom mend anyone contemplating start RC Helicopters However really bought machine could investigate following areas 1 Singlestick control Helicopters 2 XPO control Pitch Roll Yaw 3 Kraft Super Gyro currently least expensive mar ket 4 Watson RC-037 Stabilizer lightest easiest battery pack designed resist vibraton smaller high-rpm engine 5 SR 900 mAb battery pack same size 500 mAh pack 1 oz heavier 6 Kraft KPS-24 servos Helicopter use dual ball-bearings supporting output shaft feedback pot isolated output shaft 7 ABC engine muffled tuned-pipe Helicopters design self-protecting bad effects over-heating danger always present model Heli Actually last came first have old K&B 35cc 21 cu engine Macs muffled tuned pipe has flown several airplanes eg Tims Sunfli 4-20 seen August 1978 has power sport 40 K&B Speed fuel designed very quiet Its sound level 68 dB 60 dB environment measured 30 feet compari son air conditioning office puts 72 dB desk Everyone comments nice sound flight gives impression jet turbine reciprocating engine power gives Baron 20 produces breath taking vertical accelerations Im sure machine overpowered motor mounts came drilled tapped accept cooling fan fit prop drive washer well Ill probably have cut off remove plastic extension arm throttle provided also advice discard cut slot cooling shroud throttle Continued page 84 J PITCHSERVO CONTROL CONTROL 113B213AYAW MIXER 2 COLLECTIVEUNI 112A 112B fiIVE CONTROLA2 December 1982 31 George trieo sne Watson RC-037 Stabilizer different model tested Heliboysee RT September 1982 Circus NES-SOl servo Baron 20 500K pot signal lead added George provide convenient external gain adjustment Read column learn worked peek engine room Georges Baron 20 piece black plastic Mystic tape No 191 across back open cabin level starting pulley went long way toward keeping interior cabin clean George didnt use plastic throttle-arm extension camewith kithe cuts hole thecooling shroud useda straight pushrod 186 21s metal throttle arm claims improved throttle control reliability lot Functional diagram interconnecting Ace Silver Seven transmitter Myers Dual Mixer Radio Technique October 1980 February 1981 Helicopter use George dislikes crawling grass making running adjustments Helicopters assembledthis neatteststand stable usedtofeed people bedtoputthechopperatbeltheight convenienceand safety hes checking main-rotor tracking can also make engineadjustmentsand since machine high enough outof ground effect flightadjust ments An added advantage isthatthe rotordoesnt blow up lot dirt Elastic luggage straps hold Baron 20 down field kit car battery weight table down keep moving Note George wearing safety glassesvery wise working closeto rapidly rotating machinery Hes holding customized Ace Silver Seven transmitter Settle 21 oz Enough newest Lectra Starter* Quadra weighs 21 oz including rechargable nicad battery 25-50 starts between battery charges evening installation now possible starter mechanics ahead firewall Finest quality components used throughout Engine starter easily transferred model model Introductory Price $15995 Complete Mount Charger Also available assembled tested package overbalanced Quadra engine Call write prices Incorporated 615 So Gallatin Rd son TN 37 615 868-6811 Mon thru Sat am 500 pm R/C SALES REPAIR SERVICE FOR SERVICE HOBBY LOBBYAND EK LOGICTROL F UTA BA * HOBBY SHACK\W ROYAL- SPECIAL PURPOSE PRO LINEBATTERIES & CHARGERS 84 Model Aviation ROWS DESIGNS TODAY Air times no longer problem I n7Q.l1 SARATOGA W~J o GORGEOUS SCALELOOKING GLIDER 64 52 flying wejOht its solid-core composite foam spruce balsa cmv stab rudder CLCRR A3D EFFICIENT cansistantly able get 25% OR lORE AIR TIME tOan so-called state-oftheart hollow core polyhedral floaters ormance gap due largely faithfully repraduced INCOMPARABLE EPPLER 214 airfoil te RIOR RSPECT RATIO 4ING 17 134 wing CLEAlI EFFICIEST LISES AND DETAILING IN SCULPTED FIRERULUSS OSTIRE El CUNTROL CONFIGUORTION DDSUNG does base efficiency loss due spoilers Rather spoilers CINUSUNG FEATURES REOULUTIONURO lIiLTIFUNCTION AILERONS pop up about ggO landing control CorIiN speed control 450 positive flap WINUSONG CAll RE SPUT LANDED LIKE FEATHER ranging nut across sky flying between thermals ailerons refleoed up R match Rn optimum flap refleo yields highspeed airfoil across entire span maintaining precision separate flap ailerRo cOO U Cr01 ship has seen beliesed WINDOOIIG HIGhEST PERFORMANCE TUERMAL DURATION KIT ARAILARLE also EASIEST TO FLY MULTICRANNEL GLIDER have ever offered dont hose 0 great multichannel flyer GET GREAT PERFURMANCE ship osog however reconnended competent pilots Too can buy bigger OUG CANT DUO RETTER YOU CAIIT FUEl COME CLOSEU ri TENTH ANNIVERSARY SPECIAL ON RETAIL URDERS ONLY may deduct 15% retail price ordering factory direct complete glider kit Uffer good thru lan 30 1RRO used r discouvt 0 FREE UIORO TAPE available up RU $20 refundable depsoit pbs $100 shipping showing detail entire line gliders including new NIlIDUOIIG Great club veetingo just helping decide model best URS SW Canano Dr. Cemane Ia Wa place tighten securely Insert hole tail poRt block add washer bottom wheel collar Bend sweep axle install tail wheel Bend sEabilizer hold-down hooks place Ehe fuselage / 16-in music wire Install lower wing hold-down dowels Assemble main landing gear fuselage straps screws Install engine fuel tank radio associated hardware Screw aluminum cowl parts place Make up dummy exhausts epoxy place Mount tail assembly check align ment Trim build up stab key required assure alignment satisFied paint small witness marks matching up alignment subsequent assemblies Install top wing Check alignment fuselage lower wing includ ing equal gap wing tips Springing cabane strut assemblies will assist effort Finally install split dowel wing alignment keys bear against wing mount tubes Check balance point should beat 50% top wing chord Add lead ballast compart ment beneath engine necessary attempt fly tail-heavy model slight nose-heavy condition acceptable Make final check control travel Flight testing should done calm day least light winds prefer start takeoff roll about 25% 30% upelevator holds tail down good direc tional control ship will fly off tail-low attitude Relax up-elevator allow model climb shallow angle about 50 feet gain airspeed before starting first Rum airplane flies quite slowly has very docile stall characteristics should wary stalls until some practiced high altitude reducing power model slows quickly due its having much drag event dead engine get nose down maintain flying speed Landings purejoy Just flare out let settle Help keep US Male moving Radio Technique/Myers Continued page 31 pushrod see photo balance dont like ABC engine Helicopter because interference-fit between piston cylinder absolutely intolerant contamination must filter both fuel incoming air because trash engine will cause bind engine would better suited Helicopter piston modified low-tension Dykes rings Perhaps K&B will consider making such engine market develops addition Baron 20 uses belt starter engine has never easy start takes lot fun out situation Too bad order proceeed rest testing listed replaced Circus Apollo system Kraft flight pack composed SR 900 mAh battery Kraft item Kraft Super Gyro five Kraft KPS-24 servos controlling same Ace Silver Seven transmitter see columns August October 1980 February 1981 Watson RC-037 ob tained exchanging RC-036 described September 1982 installed KPS-24 modified purpose Taking easy parts first Kraft Super Gyro KPS-24 servos June 1982 column worked beautifully Theres really nothing say beyond fact plugged worked perfectly right start Likewise SR 900 mAh battery showed power Continued page 118 Patented SysOem 200 now available wish MB 61 ne new ovad gears Dealer Inquiries Invited * Send $100 today * complete catalog EASTCRAFT IDeductible first orderl PO Box 508- M7Irwin PA 15642 Speciality Products 412 864-4959 SALES RADIO SYSTEMS FUTABA ROYAL ACCESSORIES FOR MOST RADIOSJ SAILPLANE ENTHUSIASTS ENJOY TROUBLE-FREE FLYING WITH THE NEW POWRWII%ICH AND THE RETRIEVERDESIGNED FOR EASE OF HANDLING AND THOROUGHLY TESTED BY MODELERS IN THE FIELD THE POWR WINCH WILL LAUNCH ANY SIZE SAILPLANE TO MAXIMUM HEIGHT WITH FAST EASY OPERATION AND FOR THE FIRST TIME LAUNCH-AMINUTE IS POSSIBLE USING THE RETRIEVER NO WAITING-NO WALKING NO NONSENSE Write call information FUEL fuel teBlue Flame give youedge performance BLUE FLAME fuels made highest quality ingredients give engine Best Performance Longest Life No COD FOB Englewood Check Chargecard Money Order Only Send FREE Catalog Shipp4ng Cost Per Case UPS Call UPS zone 2-426 3-513 4-630 5-759 6-946 7-1148 8- 1376 2672 WEST HAMPOEN / ENGLEWOOD CO 80110 PHONE 303 789-9411 Radio Technique/Myers p 84 advertised contain above excellent choices 20-powered Helicopter based fact Circus NES 50 1/502 servos using earlier have similar size weight power output Ill have go record estimating will perform just well usual 61-powered machines Perhaps should mention some special features of above products SR battery pack available SR Batteries Inc Box 287 Bellport NY 11713 customassembled modelers Larry Sribnick special batteries made severe aerospace applications Aside obvious fact constructed pack 50% charge usual volume batteries also feature spring-loaded resealable vent-valve welded internal connections reasealable vent-valve important because removes primary causes pre mature battery pack failure CO-2 poisoning introduced overcharging causes usual beer-can punch open non resealable vent batteries used practically other RC nickel-cadmium packs SR packs welded internal connections remove most-common cause RC battery pack failure open-circuit cell resulting slippage usual crimped internal connec tions addition external connections tween batteries made special welded metal straps So much additional performance theyre competitively-priced well $2395 Kraft plug plan replace flight packs SR batteries hope itll just before fail Youve heard discuss frame-time sensitivity servos before KPS-24 doesnt have What means will get exactly same output torque servo whether plugged 2-channel Sailplane race-car system plugged 8channel Super Set Most servos dont act way compari son KPS-33 Bantam Super Midget optimized RC race-car systems produces its maximum torque controlled 2channel system having frame time 15 milli seconds Although will work plugged 7-channel Kraft system has frame time order 22 milliseconds output torque will reduced 20% 25% Most servos exhibit frame-time sensitivity some extent KPS-24 first Ive ever tested shows absolutely thus truly universal servo Couple fact dual hall-bearing supports output shaft isolated feedback pot think have excellent all-around servo design Kraft Super Gyro highly-refined device featuring Hall-effect transducer ball bearinged gymbals both should reduce required maintenance minimum doesnt have switch-panel sensivitity adjust ments in-flight ON/OFF switching capability Circus NEJ-l00 Gyrosensor also uses Hall-effect transducer hall-bearings draws about 20 mA less can take choice Both gyros excellent Watson Stbilizer RC-037 pitchfork con figuration showed less acoustic feedback almost no lateral sensitivity advertised Un fortunately report installation Circus NES-SOl servo first such conver sion made Watson Industries set gain high unusable tried putting 500K pot series signal lead cut $300Q-9 t$25000 * less batterycempemATieNplus shipping pshippingONE WOOD LANEMALVERNPA1935S 2151 644-0692 4 Gallon Case MIX OR MATCH PER GALLONDrum 5%$535 10%$605 15%$870 90ARSO Made wIth blend mynthetlc caster beat posIbIe lubricatIon DeWigent actIon cut varnish wIth muffler Write call latest drum r SOUTHERN PRO RETRACTS SERVOFormerly ACTUATEDPRO-LINE FORand RELIABILITYSOUTHERN H/C IF THE RADIO WORKS THE LANDING GEAR WORKS IF THE RADIO DOESNT WORK IT DOESNT MATTER SEE YOUR DEALER DR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 513 738-1576 IL AIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience H5 925 E Creighton Road ONIRON modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Authorized sales vice JR-PROPO radio equipment imported Circus Hobbies Pensacola FL 32504 904/478-6745 Line_ down Sensitivitywhich workedbut brought some kind RF pickup inter fered control Just fair unit transferred RC 037 Heliboy RC system has room spread Out worked perfectly got point could fly right-hand no yaw input So guess message need some separation between Watson Stabilizer rest RC system components About inch foam does job Heliboy didnt have room crowded cabin Baron 20 Finally set up Ace Silver Seven similarly Apollo system ACC function tried several flights XPO function set middle curve three offered Ace hoped could set machine up limited control sticks midrange hovering maximum control outer range aerobatics XPO working pitch roll yaw unhappy Ill work some right now prefer Linear control same vein single-stick control seems logical just didnt work can fly machine will take some hours practice before can say Im really com fortable method madness people Ive met fly both Helicopters stitfwing aircraft have complained flying degrades performance other believe same thing has happened put cause down fact Ive flying both types machine same 2-stick box Thats OK same type control movements will produce loops rolls its bad nothing stiff-wing flying relates hovering bang sticks around lot hoveringyou dont have much use precise proportional control So order get over years proportional training reflexes thought might good idea fly Helicopters box thatfeels dUferent might train reflexes respond according feel transmitter well eye-hand coordination Only time will tell can made work Faye Peoples RC Helicopter pioneer best chopper pilots around flies single-stick spoke him East Coast Helicopter Championships held Lincroft NJ Horace Hagan CD August 15 1982 Faye said has spent past year flying Sailplanes Helicopter flying worse its years forgot ask what kind box used Sailplanes Ive overrun page limit again Keep letters coming folks George M Myers 70 Froeblich Farm Rd Hicks tille NY 11801 MAA Fly-In/Beckman Continued page 36 part Bryon Godbersons home could overlook get pictures almost overwhelming panorama Fun-Fly Festival pictures included fall far short really illustrating tremendous event Future IMAA Fun-Fly Festivals may exceed number participants number aircraft whatever will never equal impact 2nd Annual extravaganza Model Books/Hannan Continued page 39 model design Walt Mooney inci dentally have folks thank Bill Winter inspiring endeavor Carl Wheeley seeing through publication readers letters comments What next John Brown Japan being written scouring countryside inscrutable modeling publications Already have form Mr Tatebayashis charming catapult glider book supplied complete construction materials launch ing rubber An English translation version expected follow soon Yours truly Well another book under con sideration meanwhile its great actually building models again OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING INTRODUCING THE TM PAT PENDING new completely revolutionary concept ot power br glow plugs modet cars boats air ptanes heticopters anything using 15 Standard plug tor gtow engines Rechar up 1000 times Fits poc t k ways inverted Fitst bug Head Lock TM plug *ig propeller C c g 4structions 90 day guarantee terAb hing tails normal usag wi 0air replace 56 rc ne Ill full yeart SEE YOUR L L US- BANK CARDS OK COD $2195 See Dealer SERVICE703435-5805 13506 Glendundee Dr Herndon VA 22071 December 1982 119 Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Thplanes5 awards Scale 21 Engine 60 Send 75C latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr wiIliamsilIe NY 14221 71 8632-4838