Radio Control: Sport and Aerobatics

Sport Aerobatics Ron Van Putte YOULL probably reading about RC F3A World Championships issue will disappointed am about results Since team finished third individual fliers finals makes wonder what happened hate say told did September column Apparently situation worse feared expected virtually European fliers would flying airplanes powered two-cycle engines since re ports contests indicated virtually no four-cycle engines being flown also expected Japanese would fly two-cycle engines exclusively So surprise expected judges would virtually ignore box judges left own devices determine limits box no flags marked 600 angles judges position Apparently judges decided own penalize fliers excessively wide turnarounds since no evi dence conspiracyor just didnt know limits failure penalize flying out box really puzzling told primary reason F3A Turn around pattern reduce area competition flown because limited flying space available fields Europe early 1984 US fliers decided Turnaround would make twocycle-powered Pattern airplanes obsolete proceeded build fly large four-cycle-powered airplanes Airplanes like Laser 200 Dalotel OS Enya 12 cu four-cycle engines became Turnaround combinations Only few diehards tried fly two-cyclepowered Tiporare Atlanta similar designs interesting thing happened fliers noted judges didnt seem paying much attention box two-cycle-powered old style type design started win Turnaround events Contests began have mixed bag four-cycle-powered large airplanes two-cycle-powered old-style designs conventional lan50 Model Aviation airplanes like four-cycle-powered Laser 200 have future Turnaround Pat tern judges continue permit filers violate boxas seemed World ChampionshIps Ron has column Knights the Air produces reat-looking Grumman Fl 1 F-i Tiger ducted-fan ship powered wit Byro Jet fan unit driven OS 65 DF retracts fold up fuselagejust like full-size planes simple homemade wing rack stores bunch wings safeiy out th way minimum space screw two pieces 1 x 2 wali bore holes lengths A-in dowels ding gear high-pitch props situation typical Masters Tour nament last June fielded World Championship team flew two twocycle airplanes four-cycle airplane Unfortunately Europeans Japanese plenty experience fly ing Turnaround two-cycle airplanes front judges permitted overfly box Consequently got pounded World Championships Did get outfiown did just get snookered An interesting question regarding Turn around pattern country What airplanes engine combinations will developed next year Based World Championships fliers will mov ing away four-cycle engines favor two-cycle engines moving down airplane size wing areas around 800 850 square inches judges continue permit violations box However judges country stick FAI rules could see development air planes will different what rest world will flying Isnt interesting quandry judging Turnaround accordance FAI rules could end up having airplanes pilots would competitive next World Champion ships either Strange Another point ponder Should continue have rest world decide us what will flying top class US Pattern competition just can field team competitive World Championships Since future four-cycle engines international competition appears nil expect market flood ed four-cycle engines nobody wants Dont hold breath can expect Continued page 137 Scenem rom Van Puttes workshop L latest rejuvenation wrecked Tiporare nose ripped c. wing saddie area dare find repairst right Ron has found something fiiiing dings making fle thinks better beiiy-button lint ear-wax Modei Magic Fiiier photo shows fiiiets baisa Curare Ron has working forever Hes got say about product column Slow Easyto Fly ITS PARACHUTE ITS ULTRAUGH1 ITS Great Camera plane Become aerial photographer pictures camera mount Included remarkable windbag owes iVt exceptional flying handling characteristics patented FlexifoilSoftwingThis aero foil shaped nylon envelope inflates air through leading edge moves fotwardThe leading edge supported fiberglass spars mounted softwing beautifully made 12 squar foot wing does require finishing color already Colors Red Yellow Orange wing very strong virtually unbreakable yet will fold down fit pocket THERE CAN BE NO BETTER INTRODUCTION TO RADIO CONTROL wing mounted top king post Windbag has very low center gravity totaly self stabilizing virtually attitude soon realease controls tt will retum level flight stalled condition full up " engine idle aircraft will sink almost vertically like parachute can used get out panic sitituation model will climb loop roll around chute can remove king post race air car can hold windbag pylon races large balloon wheelsfumished give great ground clearence EASY TO BUILD EASY TO REPAIR windbag kit completeAII needed complete model engine 40 60 three chanel radio fuel tank has much success using new four stroke engines Windbag 36 high 33 1/2 long 91/2from center engine shaft ground 24 between rear wheelsFuse 19 IongThe wing l2SqFt 2Ft 6Ft ITEXXDN PHIl lllfl P1141111 4 T% PO BOX 420496 MIAMI FLORIDA 33242 PHONE 305 6343630 January 1986 51 Dealer Inquiries invited * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202Air Cleaner Fine$225 Replacement Inserts Cat No 104 PkI2 lnsertsCoarse $195 Cat No 204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 As alternative method acrylic can cut its final outline shape before heating windshield already complete soon cools An advan tage method cutting sanding edges can done paper protection place plastic must precisely centered aluminum form before heating assure exact symmetry latter can bit tricky plastic tends slide easily rotate aluminum could result asymmetrical windshield Marking centerlines plastic form will help keep aligned properly On-board glow ignItion Product reviews dont often appear column occasionally item special interest RC Scale modelers comes attention Ace R/G has Nylite III glow plug lighter on-board ignition throttle servo near idle position adaptable twins two-cylinder engines system consists micro switch box adjustable cam attached throttle pushrod can set close circuit 1200 mAh cell point servo travel Ignition can applied lowest idle other selected engine speed switch box can mounted anywhere model either between servo throttle elsewhere An on-off switch also supplied pre vent discharge battery engine stopped its throttle idle position Switched OFF posi tion external starting battery can plugged charging socket Switched ON starting can done internal cell neat feature lowprofile remote headlock glow plug will fit inside tight cowling Also furnished system charger on-board cell adapter connection external starting battery charging socket Ace R/G has thought detail make workable system course modelers insist upon hidden receiv er switch includes us will now have another switch charging socket hide inside cowl under hatch complete system adds less four ounces model weight provides de pendable slow idle inverted engines four-strokes positive response throttle opened possibility starting need external power source Having used on-board glow cell several older models merit idea recognized 1200 mAh cell can used nose weight ballast tail-heavy situation Nylite II available two glow plugs kit form well assembled Scale instruments peer inside Bob Nelitz Cub T-craft cockpit instrument panel stands out being alto gether realistic having authenticallyreproduced instrument faces Seen K-W Scale Rally Bob has produced print ed Y4- 1A-scale instruments four col ors Background basic black Numerals graduation lines yellow red green maximum minimum mark ings detailed instrument faces heavy paper having lettering repro duced scale smallest inscriptions readable magnifying glass Obviously max mm indications will apply kind instruments card Suggested installation methods included Bobs address Cedarbridge Scale RR4 Creemore Ontario Canada LOM 100 Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 51 use four-cycle engines continue boom sport fliers Theres vast pool buyers four-cycle engines like power fuel economy pleasant sound possess number con versions four-cycle engines ignition will probably increase too because end up benefits four-cycle engine plus cheaper fuel Im always lookout new prodContinued page 141 January 1986 137 RC Aerobatics/Van Putte Continued page 137 ucts just discovered another Actually discovered because got letter Vein Wald Model Magic Products Inc Vein wrote hobby searching good easy fillet material three years used thing XXXXX commercial prod uct R VP belly button lint ear wax Ear wax lint worked best very short supply friends would cooperate thats developed Model Magic Filler works better anything else has excellent strength adhesion easily-sand ed material Look over literature give products try like themfine notOH WELL Weve read glowing testimonials manufacturers about own products decided few misgivings try Model Magic Filler know its good stuff Ive tried variety uses virtually everything claim true light tough sands easily gets thick bit water brings back whatever consis tency desire doesnt seem shrink dries like spackling paste does quarrel have doesnt spread nicely spackling Get ting nice feather edge tougher subject letters got let ter John Worth AMA Executive Director regarding windy conditions RC Masters Tournament Id reported wrote Just thought Id write advise concerning note October 85 MA concerning RC Masters Tournament Lake Charles regarding wind Jury member monitored wind worst gusting 15 22 mph measuring directly wind gauge double-checking other means Mostly 12 15 case didnt record readings exceeded FAI limit 27 mph Hmmm Only gusting 15 22 mph Im sure John Worth right its going gust 10 15 mph make sure theres beer refrigerator good football game tennis match golf tournament bingo game TV conveniently forget put RC gear charge Seriously amazed Precision Rotor Pitch Gauge Designed manufactured fine precision measuring tool ROTOR PITCH GAUGE eliminates hit-or-miss adjustment pitch angles ofthe rotor blades set chopper position GMP ROTOR PITCH GAUGE allows precise measurement collective roll pitch adjustments RC helicopter Packaged beauti ful fitted leatherette hinged box GORRAM MODEL PRODUCTS 23961 CRAFTSMAN RD CALABASAS CA 91302 TEL 818 992-0195 218 VERNON ROAD GREENVILLE PA 16125 TEL 412 588-1321 Available & L PAN AMERICAN INTL GJ HOBBIES SIG MFG A/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-FI P60 SE-FI P60 RE-FI P80 SE-FI P80 R.E-FI P65 DUCTED FAN-A E -R P80 DUCTED FAN-A E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING CO PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices subject change notice MICROMO TORI A/C MARINE ENGINES P21 SE-FI P21 RE-FI P45 RE-RI P65 RE-AI P80 RE-RI P90 RE-RI A/C CAR-BUGGY-TETHER P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICESII $8195 $81 95 $9995 $11095 $11795 $14395 CAR ENGINES $7995 $7295 $6995 $11095 January 1986 141 proper thinning helps However once goes down stays used make large wing fillet balsa Curare Im finishing slowly can see result pictures included column Good product Besides like manufacturers can refer products humor never tried belly button lint ear wax. proficiency exhibited Masters Tournament competitors ability make airplanes fly though wind wasnt blowing dont really care whether wind conditions within FAL limits blowing pretty stiff way kidding aside t think best deals century struck John Worth agreed leave NASAs Langley Research Center AMA Executive Director Periodically reproduce items RC club newsletters months contribu tion came Kansas City Radio Control Associations newsletter Contacts edited Charlie Reed item announcement cancelled FunFly event Expert class will sad hear have deleted traditionally exciting breathtaking event event deleted flown follows Take off climb minimum 300 ft altitude dive straight down full bore brightly-painted 55-gallon drum center runway pilot fewest parts airplane outside drum winner event cancelled due declining par ticipation last few years Gee wonder Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 its back straight level flight thats autopilot set Back 1972 Maynard demonstrated unit slopes Cumberland dur ing annual fun-fly Rolling inverted plane righted itself transmit ter sticks released Same results tight spiral First wings leveled nose came up back level flight did Lelke well Nats Well during days wind blewand blow didhis flights pure poetry Off tow would turn downwinda move faint heart avoidedand head tree line acting mini slope Parking bird autopilot took over kept bird wind about six minutes time approach would started landing What value would such unit real thermal contest can specu lated cross-country straightline flying think question has answered Oh yes entire unit built under $25 parts can pur chased Radio Shack outlet Besides Maynards article Flying Models another source information YS ENGINES HATORI HEADERS TETTRA HARDWARE ATLANTA- OMEGA SEE YOUR LOCAL DEALER SEND $1 FOR CATALOG $6 FOR HEADER POSTER GOLDEN GATE HOBSIES POBox 123 San Bruno CA 94066 TEL 415 952-3045 November 1972 issue Astronau tics Aeronautics Volume X Number 1 should available techni cal libraries circuit has improved upon since anyone would like copy original circuit send SASE address end column Back May 1984 issue Model Aviation column featured flying wing could built data provided Plans could easily drawn some same data quite few took up challenge bird called Elfe gent took up challenge Gene Dees Virginia Beach VA Well Gene got far laying out 200 sweep wing its span 26 meters Gene own ideas Rather use foam wing case Elfe Gene decided builtup version sizes control sur faces changed airfoil arrangement center wing out flap Eppler 174 used point tip 174 transi tions Eppler 184 An interesting side note Gene built up wing can somewhat challenge flat work surface wing varying airfoil wingtips washed out 50 Continued page 144 142 Model Aviation RC Soaring/Pruss Continued page 53 CARBIDE SCRIBER 499 HARRY HIGLEY 8 80N8 INC PO BOX 532 GLENwOOD ILL 60425 OUAIItA-SCALE PZL P-23A KARAS Polmnh recon l1ghl bomber 99 span ilhree-eCe plug-en mng channel opeStiOfl Full-size plans S35 00 onaid rI US Consirulion manual included LARRY GORDON 2460 GOLDEN SHORES CT FENTON MICH 48430 313 6295788

Sport Aerobatics Ron Van Putte YOULL probably reading about RC F3A World Championships issue will disappointed am about results Since team finished third individual fliers finals makes wonder what happened hate say told did September column Apparently situation worse feared expected virtually European fliers would flying airplanes powered two-cycle engines since re ports contests indicated virtually no four-cycle engines being flown also expected Japanese would fly two-cycle engines exclusively So surprise expected judges would virtually ignore box judges left own devices determine limits box no flags marked 600 angles judges position Apparently judges decided own penalize fliers excessively wide turnarounds since no evi dence conspiracyor just didnt know limits failure penalize flying out box really puzzling told primary reason F3A Turn around pattern reduce area competition flown because limited flying space available fields Europe early 1984 US fliers decided Turnaround would make twocycle-powered Pattern airplanes obsolete proceeded build fly large four-cycle-powered airplanes Airplanes like Laser 200 Dalotel OS Enya 12 cu four-cycle engines became Turnaround combinations Only few diehards tried fly two-cyclepowered Tiporare Atlanta similar designs interesting thing happened fliers noted judges didnt seem paying much attention box two-cycle-powered old style type design started win Turnaround events Contests began have mixed bag four-cycle-powered large airplanes two-cycle-powered old-style designs conventional lan50 Model Aviation airplanes like four-cycle-powered Laser 200 have future Turnaround Pat tern judges continue permit filers violate boxas seemed World ChampionshIps Ron has column Knights the Air produces reat-looking Grumman Fl 1 F-i Tiger ducted-fan ship powered wit Byro Jet fan unit driven OS 65 DF retracts fold up fuselagejust like full-size planes simple homemade wing rack stores bunch wings safeiy out th way minimum space screw two pieces 1 x 2 wali bore holes lengths A-in dowels ding gear high-pitch props situation typical Masters Tour nament last June fielded World Championship team flew two twocycle airplanes four-cycle airplane Unfortunately Europeans Japanese plenty experience fly ing Turnaround two-cycle airplanes front judges permitted overfly box Consequently got pounded World Championships Did get outfiown did just get snookered An interesting question regarding Turn around pattern country What airplanes engine combinations will developed next year Based World Championships fliers will mov ing away four-cycle engines favor two-cycle engines moving down airplane size wing areas around 800 850 square inches judges continue permit violations box However judges country stick FAI rules could see development air planes will different what rest world will flying Isnt interesting quandry judging Turnaround accordance FAI rules could end up having airplanes pilots would competitive next World Champion ships either Strange Another point ponder Should continue have rest world decide us what will flying top class US Pattern competition just can field team competitive World Championships Since future four-cycle engines international competition appears nil expect market flood ed four-cycle engines nobody wants Dont hold breath can expect Continued page 137 Scenem rom Van Puttes workshop L latest rejuvenation wrecked Tiporare nose ripped c. wing saddie area dare find repairst right Ron has found something fiiiing dings making fle thinks better beiiy-button lint ear-wax Modei Magic Fiiier photo shows fiiiets baisa Curare Ron has working forever Hes got say about product column Slow Easyto Fly ITS PARACHUTE ITS ULTRAUGH1 ITS Great Camera plane Become aerial photographer pictures camera mount Included remarkable windbag owes iVt exceptional flying handling characteristics patented FlexifoilSoftwingThis aero foil shaped nylon envelope inflates air through leading edge moves fotwardThe leading edge supported fiberglass spars mounted softwing beautifully made 12 squar foot wing does require finishing color already Colors Red Yellow Orange wing very strong virtually unbreakable yet will fold down fit pocket THERE CAN BE NO BETTER INTRODUCTION TO RADIO CONTROL wing mounted top king post Windbag has very low center gravity totaly self stabilizing virtually attitude soon realease controls tt will retum level flight stalled condition full up " engine idle aircraft will sink almost vertically like parachute can used get out panic sitituation model will climb loop roll around chute can remove king post race air car can hold windbag pylon races large balloon wheelsfumished give great ground clearence EASY TO BUILD EASY TO REPAIR windbag kit completeAII needed complete model engine 40 60 three chanel radio fuel tank has much success using new four stroke engines Windbag 36 high 33 1/2 long 91/2from center engine shaft ground 24 between rear wheelsFuse 19 IongThe wing l2SqFt 2Ft 6Ft ITEXXDN PHIl lllfl P1141111 4 T% PO BOX 420496 MIAMI FLORIDA 33242 PHONE 305 6343630 January 1986 51 Dealer Inquiries invited * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202Air Cleaner Fine$225 Replacement Inserts Cat No 104 PkI2 lnsertsCoarse $195 Cat No 204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 As alternative method acrylic can cut its final outline shape before heating windshield already complete soon cools An advan tage method cutting sanding edges can done paper protection place plastic must precisely centered aluminum form before heating assure exact symmetry latter can bit tricky plastic tends slide easily rotate aluminum could result asymmetrical windshield Marking centerlines plastic form will help keep aligned properly On-board glow ignItion Product reviews dont often appear column occasionally item special interest RC Scale modelers comes attention Ace R/G has Nylite III glow plug lighter on-board ignition throttle servo near idle position adaptable twins two-cylinder engines system consists micro switch box adjustable cam attached throttle pushrod can set close circuit 1200 mAh cell point servo travel Ignition can applied lowest idle other selected engine speed switch box can mounted anywhere model either between servo throttle elsewhere An on-off switch also supplied pre vent discharge battery engine stopped its throttle idle position Switched OFF posi tion external starting battery can plugged charging socket Switched ON starting can done internal cell neat feature lowprofile remote headlock glow plug will fit inside tight cowling Also furnished system charger on-board cell adapter connection external starting battery charging socket Ace R/G has thought detail make workable system course modelers insist upon hidden receiv er switch includes us will now have another switch charging socket hide inside cowl under hatch complete system adds less four ounces model weight provides de pendable slow idle inverted engines four-strokes positive response throttle opened possibility starting need external power source Having used on-board glow cell several older models merit idea recognized 1200 mAh cell can used nose weight ballast tail-heavy situation Nylite II available two glow plugs kit form well assembled Scale instruments peer inside Bob Nelitz Cub T-craft cockpit instrument panel stands out being alto gether realistic having authenticallyreproduced instrument faces Seen K-W Scale Rally Bob has produced print ed Y4- 1A-scale instruments four col ors Background basic black Numerals graduation lines yellow red green maximum minimum mark ings detailed instrument faces heavy paper having lettering repro duced scale smallest inscriptions readable magnifying glass Obviously max mm indications will apply kind instruments card Suggested installation methods included Bobs address Cedarbridge Scale RR4 Creemore Ontario Canada LOM 100 Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 51 use four-cycle engines continue boom sport fliers Theres vast pool buyers four-cycle engines like power fuel economy pleasant sound possess number con versions four-cycle engines ignition will probably increase too because end up benefits four-cycle engine plus cheaper fuel Im always lookout new prodContinued page 141 January 1986 137 RC Aerobatics/Van Putte Continued page 137 ucts just discovered another Actually discovered because got letter Vein Wald Model Magic Products Inc Vein wrote hobby searching good easy fillet material three years used thing XXXXX commercial prod uct R VP belly button lint ear wax Ear wax lint worked best very short supply friends would cooperate thats developed Model Magic Filler works better anything else has excellent strength adhesion easily-sand ed material Look over literature give products try like themfine notOH WELL Weve read glowing testimonials manufacturers about own products decided few misgivings try Model Magic Filler know its good stuff Ive tried variety uses virtually everything claim true light tough sands easily gets thick bit water brings back whatever consis tency desire doesnt seem shrink dries like spackling paste does quarrel have doesnt spread nicely spackling Get ting nice feather edge tougher subject letters got let ter John Worth AMA Executive Director regarding windy conditions RC Masters Tournament Id reported wrote Just thought Id write advise concerning note October 85 MA concerning RC Masters Tournament Lake Charles regarding wind Jury member monitored wind worst gusting 15 22 mph measuring directly wind gauge double-checking other means Mostly 12 15 case didnt record readings exceeded FAI limit 27 mph Hmmm Only gusting 15 22 mph Im sure John Worth right its going gust 10 15 mph make sure theres beer refrigerator good football game tennis match golf tournament bingo game TV conveniently forget put RC gear charge Seriously amazed Precision Rotor Pitch Gauge Designed manufactured fine precision measuring tool ROTOR PITCH GAUGE eliminates hit-or-miss adjustment pitch angles ofthe rotor blades set chopper position GMP ROTOR PITCH GAUGE allows precise measurement collective roll pitch adjustments RC helicopter Packaged beauti ful fitted leatherette hinged box GORRAM MODEL PRODUCTS 23961 CRAFTSMAN RD CALABASAS CA 91302 TEL 818 992-0195 218 VERNON ROAD GREENVILLE PA 16125 TEL 412 588-1321 Available & L PAN AMERICAN INTL GJ HOBBIES SIG MFG A/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-FI P60 SE-FI P60 RE-FI P80 SE-FI P80 R.E-FI P65 DUCTED FAN-A E -R P80 DUCTED FAN-A E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING CO PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices subject change notice MICROMO TORI A/C MARINE ENGINES P21 SE-FI P21 RE-FI P45 RE-RI P65 RE-AI P80 RE-RI P90 RE-RI A/C CAR-BUGGY-TETHER P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICESII $8195 $81 95 $9995 $11095 $11795 $14395 CAR ENGINES $7995 $7295 $6995 $11095 January 1986 141 proper thinning helps However once goes down stays used make large wing fillet balsa Curare Im finishing slowly can see result pictures included column Good product Besides like manufacturers can refer products humor never tried belly button lint ear wax. proficiency exhibited Masters Tournament competitors ability make airplanes fly though wind wasnt blowing dont really care whether wind conditions within FAL limits blowing pretty stiff way kidding aside t think best deals century struck John Worth agreed leave NASAs Langley Research Center AMA Executive Director Periodically reproduce items RC club newsletters months contribu tion came Kansas City Radio Control Associations newsletter Contacts edited Charlie Reed item announcement cancelled FunFly event Expert class will sad hear have deleted traditionally exciting breathtaking event event deleted flown follows Take off climb minimum 300 ft altitude dive straight down full bore brightly-painted 55-gallon drum center runway pilot fewest parts airplane outside drum winner event cancelled due declining par ticipation last few years Gee wonder Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 its back straight level flight thats autopilot set Back 1972 Maynard demonstrated unit slopes Cumberland dur ing annual fun-fly Rolling inverted plane righted itself transmit ter sticks released Same results tight spiral First wings leveled nose came up back level flight did Lelke well Nats Well during days wind blewand blow didhis flights pure poetry Off tow would turn downwinda move faint heart avoidedand head tree line acting mini slope Parking bird autopilot took over kept bird wind about six minutes time approach would started landing What value would such unit real thermal contest can specu lated cross-country straightline flying think question has answered Oh yes entire unit built under $25 parts can pur chased Radio Shack outlet Besides Maynards article Flying Models another source information YS ENGINES HATORI HEADERS TETTRA HARDWARE ATLANTA- OMEGA SEE YOUR LOCAL DEALER SEND $1 FOR CATALOG $6 FOR HEADER POSTER GOLDEN GATE HOBSIES POBox 123 San Bruno CA 94066 TEL 415 952-3045 November 1972 issue Astronau tics Aeronautics Volume X Number 1 should available techni cal libraries circuit has improved upon since anyone would like copy original circuit send SASE address end column Back May 1984 issue Model Aviation column featured flying wing could built data provided Plans could easily drawn some same data quite few took up challenge bird called Elfe gent took up challenge Gene Dees Virginia Beach VA Well Gene got far laying out 200 sweep wing its span 26 meters Gene own ideas Rather use foam wing case Elfe Gene decided builtup version sizes control sur faces changed airfoil arrangement center wing out flap Eppler 174 used point tip 174 transi tions Eppler 184 An interesting side note Gene built up wing can somewhat challenge flat work surface wing varying airfoil wingtips washed out 50 Continued page 144 142 Model Aviation RC Soaring/Pruss Continued page 53 CARBIDE SCRIBER 499 HARRY HIGLEY 8 80N8 INC PO BOX 532 GLENwOOD ILL 60425 OUAIItA-SCALE PZL P-23A KARAS Polmnh recon l1ghl bomber 99 span ilhree-eCe plug-en mng channel opeStiOfl Full-size plans S35 00 onaid rI US Consirulion manual included LARRY GORDON 2460 GOLDEN SHORES CT FENTON MICH 48430 313 6295788