THEY CALLED Tiger Moth wasnt biplane built test new engine made its name speed-record setter winner hands successful airplane inspired American racer may have known about 44 Model Aviation began 1926 seemingly limitless supply World War surplus airplane engines beginning dry up DeHavilland doing well its new Moth two-seat personal biplane en gines becoming serious problem Air Disposal Co building low-power quite inexpensive engines World War technology left over parts pretty well used up early Cirrus engines So Capt Geoffrey deHavilland set out create own completely new engine would eventually gain world-wide reputation Gipsy goal four-cylinder in-line aircooled engine would develop least 100 hp figure still ballpark lightweight one- two-seaters Airdisco Cirrus Mk 2 putting out ques tionable 85 hp 2000 rpm Under engineering leadership Frank Halford work progressed rapidly deHavillands Stag Lane works new engine early 1927 far enough along justify brand-new air plane prove demonstrate new powerplant what better way show off unusually good power-to-weight engine mount minimumsize racing airplane important air race British held days still big event sporting program Kings Cup Race handicapped affair type airplane eligible drew huge Left Clean compact lines marked Tiger Moths design cross section determined drawing line around pilot seated against wall Righthand proppicture flopped Right Sheer poetry time its racing debut Tiger Moth made quite stir aero nautical circles prototype destroyed during bombing raid World War II Left No thats Howards Pete Coming along few years later Pete very similar di mensions performance OH 71 did 18647 mph 62-mile closed course204 its best crowds heavy press attention ideal stage introduce hoth engine airplane design DH 71 begun early 1927 darkest secrecy smallest possible airframe could still used serious test work keep fuselage bare minimum company test pilot Capt Hubert Broad used template cockpit sat him against wall drew chalk line around him Apparently no thought larger pilots being involved test program certainly producing such special machine sale public June 24 1927 first DH 71s ready fly G-EBQU powered first tests older 85hp Cirrus Three quick flights Hubert Broad demonstrated basically sound machine though controls first very sensitive second airplane completed flown just few days later also Cirrus engine As time Kings Cup Race neared both airplanes received Certif icates Airworthiness new Gipsy engine gotten its all-important approval Air Ministry Since first airplane already received its new engine withdrawn race leaving newer G-EBRV flown Capt Broad Introduction Gipsy put off till later tention focused DH71 now named Tiger Moth sometimes referred Tiger Moth Racer day great race visibility around course poor air very rough over course time hardly airplanes ever gone fast little power few weeks later powerful Gipsy-engined Tiger Moth last ready show its stuff August 24 1927 just two months after its first flight DH71 flown over 100-km 62 mi closed course Hubert Broad set World Speed Record Class II air planes averaged official 18647 mph Today almost half century later 100-km speed record airplanes weight barely 20mph higher Fifty years ago deHavillands Tiger Moth top speed within 20 mph todays racers its weight class Don Berliner rambled 500 miles around England Broad took off across bumpy field sped away gloom way victory fame en gine sales Twenty-six miles later landed air rough could barely keep hands controls little craft pretty sad public debut DH71 did demon strate what might expected fu ture Hubert Broad averaged better 160 mph despite weather Five days after speed record Capt Broad went aloft effort set world class altitude mark climbed smoothly 19000 ft stop well short 22250-ft record though still climbing solid 1000 ft/per/minute because prob lems oxygen system Still set British record less two miles short modern record very light airplanesturn page plans continued page 84 Above Hows nifty profile RC CL DH 71 makes exceptionally fine subject Plans overleaf meticulous Tiger Moth/Berliner continued page 45 appears have about end public flying two Tiger Moth Racers Cirrus-powered machine used deHavilland another year airframe testing research Gipsy-engined airplane used its originally-intended purposethe flight development testing pow erful engine also seen static dis play air shows during 1928 1929 What greatest importance first production Gipsy engines started coming off assembly lines June 1928 beginning major new phase lightplane history Tens thousands produced succeeding years still-popular Tiger Moth training touring biplanes decades other Brit ish light aircraft Canadian-built Chipmunk trainers original fourcylinder Gipsy expanded Gipsy Six Comet racers deHavilland Dove light transport built US under license US-built DH60 Gipsy Moths sev eral can still seen flying good weather original G-EBRV its 85-hp Cirrus engine retired iA 1928 hung engineless rafters its birthplace taken down briefly 1933 used advertisement coming Kings Cup Race once again tucked away deHavillands Hatfield shops Comet Racers built Fall 1940 long after end Battle Britain lone German Ju-88 slipped through British defenses plastered factory successful raid during war Several workmen killed pro totype DH71 destroyed record-setting G-EBQU shorter life 1930 sold party Australia September year pilot took off practice forthcoming air race engine quit about 150-ft altitude Moth Racer crashed kill ing its pilot neither original Tiger Moths remained front public very long contributed great deal both engine airframe design progress Great Britain partly plan elsewhere deHavilland desigi can traced back 71 DH77 unsuccessful all-metal low wing interceptor similar look ing much larger 330-hp engine giving top speed about 180 mph As still very much era biplane combat roles Royal Air Force turned up its nose such radical idea Yet least man seemed like idea very much Ameri can racing plane designer Benny Howard turned ut very successful light weight low-powered racer bore strong resemblance DH 71 DGA-3 Pete first competed terms much powerful racers 1930 wire-braced low wing upright American-built 319 cu Cirrus engine its windshield faired smoothly rear engine cowl ingall like DH71 no direct evidence Pete actually copied Tiger Moth Racer shape dimensions close enough suggest least strong inspiration Petes wing span halfway between long short wings DH71 its length just 10 less empty weight 50 lbs gross weight mere 5 lbs less performance close Petes best race course speed 170 mph Cirruspowered Tiger Moth about 166 mph Pete once clocked 195 mph straight run DH71 offi cial 187 mph unofficial 204 mph bigger engine Construction deHavilland midget traditional firm fuselage wooden main structure plywood covering cockpit minimum width partial canopy could entered folding down two sides pic tures make look like no ward visibility quite bad glassed side panels slightly played outwards pilot might look down either side very narrow cowl around upright cylinders La ter enclosed canopy fitted still visibility no worse later high-speed airplanes wings center some con troversy Two sets built least record airplane Standard size 22 6 ones apparently used flights shorter 19-ft set racing wings may have installed probably never flown wings two I-section spars wooden ribs fab ric covering airfoil 8% thick RAF 15 undercamber landing gear formed important part structure Tiger Moth Racer Pairs bracing wires ran front rear spars halfway wing tips wheel hubs tween wheel hubs absorb shock what looks like pretty rigid landing gear bungee cords mounted inside very large wheel bearings Yet cannot help wonder system really good enough rough airfields common 19 20s Specifications two engines flown Tiger Moth Racers Airdisco Cirrus 11301 cu 49 liters 85 hp 2000 rpm rated prob ably turned out maximum 80 hp flight DeHavilland Gipsy319 cu 523 liters 135 hp 2650 rpm bench compression ratio 551 Color schemes two DH7 ls G-EBQUblack nose upper fuselage lettering striping Pale bronze lower fuselage wings tail G-EBRVblack fuselage landing gear racing number striping Clear dope fabric oatmeal color wings tail White racing number fuselage Upper surface wings narrow leading edge stripe tiger stripes rib also horizontal tail ofBQU Basic specifications length 18 7 wing span22 6 wing area long wings76/2 sq ft wheel track3 11 Empty weight 618 lbs gross weight 905 lbs Fuel capacity 20 US gallons last flight deHavilland DH71 1930 Yet today few airplanes aside Formula racers get much speed little power CL Racing/Lee continued page 34 now entries AMA going down around handwriting wall change go like Rat B team Race etc think Jim makes lot sense Two basic ideas first ways competitive flying 1 -oz event second event natural leadin FAT Team Race what about some other lim ited capacity events being flown country know newslet ters get limited-capacity Slow Rat flown Great Southwest AZ CA NM maybe elsewhere people fly think should made Na tional AMA event popular event Would go over given enough exposure Come guys get stick contrib ute What Big Goodyear does compare Formula 40 Goodyear has already proposed RAC whole diatribe might seem like bad case invented showing through hope dont leave impression Limited capacity events fun flew version Slow Rat over five years ago lived Denver limited capacity Two-oz tanks 40s suction two-wheel gear etc ball doing end have pro posed through Racing Advisory Com mittee Class I-Class II breakdown established least several existing events Class would currently flown Class II being tended limited capacity possibly some other version basic rules am experienced types events proposals get through various levels AMA hierarchy out will have contribute expertise get good rules Please dont wait someone else cause probably wont get done 84 Model Aviation
Edition: Model Aviation - 1976/10
Page Numbers: 44, 45, 84
THEY CALLED Tiger Moth wasnt biplane built test new engine made its name speed-record setter winner hands successful airplane inspired American racer may have known about 44 Model Aviation began 1926 seemingly limitless supply World War surplus airplane engines beginning dry up DeHavilland doing well its new Moth two-seat personal biplane en gines becoming serious problem Air Disposal Co building low-power quite inexpensive engines World War technology left over parts pretty well used up early Cirrus engines So Capt Geoffrey deHavilland set out create own completely new engine would eventually gain world-wide reputation Gipsy goal four-cylinder in-line aircooled engine would develop least 100 hp figure still ballpark lightweight one- two-seaters Airdisco Cirrus Mk 2 putting out ques tionable 85 hp 2000 rpm Under engineering leadership Frank Halford work progressed rapidly deHavillands Stag Lane works new engine early 1927 far enough along justify brand-new air plane prove demonstrate new powerplant what better way show off unusually good power-to-weight engine mount minimumsize racing airplane important air race British held days still big event sporting program Kings Cup Race handicapped affair type airplane eligible drew huge Left Clean compact lines marked Tiger Moths design cross section determined drawing line around pilot seated against wall Righthand proppicture flopped Right Sheer poetry time its racing debut Tiger Moth made quite stir aero nautical circles prototype destroyed during bombing raid World War II Left No thats Howards Pete Coming along few years later Pete very similar di mensions performance OH 71 did 18647 mph 62-mile closed course204 its best crowds heavy press attention ideal stage introduce hoth engine airplane design DH 71 begun early 1927 darkest secrecy smallest possible airframe could still used serious test work keep fuselage bare minimum company test pilot Capt Hubert Broad used template cockpit sat him against wall drew chalk line around him Apparently no thought larger pilots being involved test program certainly producing such special machine sale public June 24 1927 first DH 71s ready fly G-EBQU powered first tests older 85hp Cirrus Three quick flights Hubert Broad demonstrated basically sound machine though controls first very sensitive second airplane completed flown just few days later also Cirrus engine As time Kings Cup Race neared both airplanes received Certif icates Airworthiness new Gipsy engine gotten its all-important approval Air Ministry Since first airplane already received its new engine withdrawn race leaving newer G-EBRV flown Capt Broad Introduction Gipsy put off till later tention focused DH71 now named Tiger Moth sometimes referred Tiger Moth Racer day great race visibility around course poor air very rough over course time hardly airplanes ever gone fast little power few weeks later powerful Gipsy-engined Tiger Moth last ready show its stuff August 24 1927 just two months after its first flight DH71 flown over 100-km 62 mi closed course Hubert Broad set World Speed Record Class II air planes averaged official 18647 mph Today almost half century later 100-km speed record airplanes weight barely 20mph higher Fifty years ago deHavillands Tiger Moth top speed within 20 mph todays racers its weight class Don Berliner rambled 500 miles around England Broad took off across bumpy field sped away gloom way victory fame en gine sales Twenty-six miles later landed air rough could barely keep hands controls little craft pretty sad public debut DH71 did demon strate what might expected fu ture Hubert Broad averaged better 160 mph despite weather Five days after speed record Capt Broad went aloft effort set world class altitude mark climbed smoothly 19000 ft stop well short 22250-ft record though still climbing solid 1000 ft/per/minute because prob lems oxygen system Still set British record less two miles short modern record very light airplanesturn page plans continued page 84 Above Hows nifty profile RC CL DH 71 makes exceptionally fine subject Plans overleaf meticulous Tiger Moth/Berliner continued page 45 appears have about end public flying two Tiger Moth Racers Cirrus-powered machine used deHavilland another year airframe testing research Gipsy-engined airplane used its originally-intended purposethe flight development testing pow erful engine also seen static dis play air shows during 1928 1929 What greatest importance first production Gipsy engines started coming off assembly lines June 1928 beginning major new phase lightplane history Tens thousands produced succeeding years still-popular Tiger Moth training touring biplanes decades other Brit ish light aircraft Canadian-built Chipmunk trainers original fourcylinder Gipsy expanded Gipsy Six Comet racers deHavilland Dove light transport built US under license US-built DH60 Gipsy Moths sev eral can still seen flying good weather original G-EBRV its 85-hp Cirrus engine retired iA 1928 hung engineless rafters its birthplace taken down briefly 1933 used advertisement coming Kings Cup Race once again tucked away deHavillands Hatfield shops Comet Racers built Fall 1940 long after end Battle Britain lone German Ju-88 slipped through British defenses plastered factory successful raid during war Several workmen killed pro totype DH71 destroyed record-setting G-EBQU shorter life 1930 sold party Australia September year pilot took off practice forthcoming air race engine quit about 150-ft altitude Moth Racer crashed kill ing its pilot neither original Tiger Moths remained front public very long contributed great deal both engine airframe design progress Great Britain partly plan elsewhere deHavilland desigi can traced back 71 DH77 unsuccessful all-metal low wing interceptor similar look ing much larger 330-hp engine giving top speed about 180 mph As still very much era biplane combat roles Royal Air Force turned up its nose such radical idea Yet least man seemed like idea very much Ameri can racing plane designer Benny Howard turned ut very successful light weight low-powered racer bore strong resemblance DH 71 DGA-3 Pete first competed terms much powerful racers 1930 wire-braced low wing upright American-built 319 cu Cirrus engine its windshield faired smoothly rear engine cowl ingall like DH71 no direct evidence Pete actually copied Tiger Moth Racer shape dimensions close enough suggest least strong inspiration Petes wing span halfway between long short wings DH71 its length just 10 less empty weight 50 lbs gross weight mere 5 lbs less performance close Petes best race course speed 170 mph Cirruspowered Tiger Moth about 166 mph Pete once clocked 195 mph straight run DH71 offi cial 187 mph unofficial 204 mph bigger engine Construction deHavilland midget traditional firm fuselage wooden main structure plywood covering cockpit minimum width partial canopy could entered folding down two sides pic tures make look like no ward visibility quite bad glassed side panels slightly played outwards pilot might look down either side very narrow cowl around upright cylinders La ter enclosed canopy fitted still visibility no worse later high-speed airplanes wings center some con troversy Two sets built least record airplane Standard size 22 6 ones apparently used flights shorter 19-ft set racing wings may have installed probably never flown wings two I-section spars wooden ribs fab ric covering airfoil 8% thick RAF 15 undercamber landing gear formed important part structure Tiger Moth Racer Pairs bracing wires ran front rear spars halfway wing tips wheel hubs tween wheel hubs absorb shock what looks like pretty rigid landing gear bungee cords mounted inside very large wheel bearings Yet cannot help wonder system really good enough rough airfields common 19 20s Specifications two engines flown Tiger Moth Racers Airdisco Cirrus 11301 cu 49 liters 85 hp 2000 rpm rated prob ably turned out maximum 80 hp flight DeHavilland Gipsy319 cu 523 liters 135 hp 2650 rpm bench compression ratio 551 Color schemes two DH7 ls G-EBQUblack nose upper fuselage lettering striping Pale bronze lower fuselage wings tail G-EBRVblack fuselage landing gear racing number striping Clear dope fabric oatmeal color wings tail White racing number fuselage Upper surface wings narrow leading edge stripe tiger stripes rib also horizontal tail ofBQU Basic specifications length 18 7 wing span22 6 wing area long wings76/2 sq ft wheel track3 11 Empty weight 618 lbs gross weight 905 lbs Fuel capacity 20 US gallons last flight deHavilland DH71 1930 Yet today few airplanes aside Formula racers get much speed little power CL Racing/Lee continued page 34 now entries AMA going down around handwriting wall change go like Rat B team Race etc think Jim makes lot sense Two basic ideas first ways competitive flying 1 -oz event second event natural leadin FAT Team Race what about some other lim ited capacity events being flown country know newslet ters get limited-capacity Slow Rat flown Great Southwest AZ CA NM maybe elsewhere people fly think should made Na tional AMA event popular event Would go over given enough exposure Come guys get stick contrib ute What Big Goodyear does compare Formula 40 Goodyear has already proposed RAC whole diatribe might seem like bad case invented showing through hope dont leave impression Limited capacity events fun flew version Slow Rat over five years ago lived Denver limited capacity Two-oz tanks 40s suction two-wheel gear etc ball doing end have pro posed through Racing Advisory Com mittee Class I-Class II breakdown established least several existing events Class would currently flown Class II being tended limited capacity possibly some other version basic rules am experienced types events proposals get through various levels AMA hierarchy out will have contribute expertise get good rules Please dont wait someone else cause probably wont get done 84 Model Aviation
Edition: Model Aviation - 1976/10
Page Numbers: 44, 45, 84
THEY CALLED Tiger Moth wasnt biplane built test new engine made its name speed-record setter winner hands successful airplane inspired American racer may have known about 44 Model Aviation began 1926 seemingly limitless supply World War surplus airplane engines beginning dry up DeHavilland doing well its new Moth two-seat personal biplane en gines becoming serious problem Air Disposal Co building low-power quite inexpensive engines World War technology left over parts pretty well used up early Cirrus engines So Capt Geoffrey deHavilland set out create own completely new engine would eventually gain world-wide reputation Gipsy goal four-cylinder in-line aircooled engine would develop least 100 hp figure still ballpark lightweight one- two-seaters Airdisco Cirrus Mk 2 putting out ques tionable 85 hp 2000 rpm Under engineering leadership Frank Halford work progressed rapidly deHavillands Stag Lane works new engine early 1927 far enough along justify brand-new air plane prove demonstrate new powerplant what better way show off unusually good power-to-weight engine mount minimumsize racing airplane important air race British held days still big event sporting program Kings Cup Race handicapped affair type airplane eligible drew huge Left Clean compact lines marked Tiger Moths design cross section determined drawing line around pilot seated against wall Righthand proppicture flopped Right Sheer poetry time its racing debut Tiger Moth made quite stir aero nautical circles prototype destroyed during bombing raid World War II Left No thats Howards Pete Coming along few years later Pete very similar di mensions performance OH 71 did 18647 mph 62-mile closed course204 its best crowds heavy press attention ideal stage introduce hoth engine airplane design DH 71 begun early 1927 darkest secrecy smallest possible airframe could still used serious test work keep fuselage bare minimum company test pilot Capt Hubert Broad used template cockpit sat him against wall drew chalk line around him Apparently no thought larger pilots being involved test program certainly producing such special machine sale public June 24 1927 first DH 71s ready fly G-EBQU powered first tests older 85hp Cirrus Three quick flights Hubert Broad demonstrated basically sound machine though controls first very sensitive second airplane completed flown just few days later also Cirrus engine As time Kings Cup Race neared both airplanes received Certif icates Airworthiness new Gipsy engine gotten its all-important approval Air Ministry Since first airplane already received its new engine withdrawn race leaving newer G-EBRV flown Capt Broad Introduction Gipsy put off till later tention focused DH71 now named Tiger Moth sometimes referred Tiger Moth Racer day great race visibility around course poor air very rough over course time hardly airplanes ever gone fast little power few weeks later powerful Gipsy-engined Tiger Moth last ready show its stuff August 24 1927 just two months after its first flight DH71 flown over 100-km 62 mi closed course Hubert Broad set World Speed Record Class II air planes averaged official 18647 mph Today almost half century later 100-km speed record airplanes weight barely 20mph higher Fifty years ago deHavillands Tiger Moth top speed within 20 mph todays racers its weight class Don Berliner rambled 500 miles around England Broad took off across bumpy field sped away gloom way victory fame en gine sales Twenty-six miles later landed air rough could barely keep hands controls little craft pretty sad public debut DH71 did demon strate what might expected fu ture Hubert Broad averaged better 160 mph despite weather Five days after speed record Capt Broad went aloft effort set world class altitude mark climbed smoothly 19000 ft stop well short 22250-ft record though still climbing solid 1000 ft/per/minute because prob lems oxygen system Still set British record less two miles short modern record very light airplanesturn page plans continued page 84 Above Hows nifty profile RC CL DH 71 makes exceptionally fine subject Plans overleaf meticulous Tiger Moth/Berliner continued page 45 appears have about end public flying two Tiger Moth Racers Cirrus-powered machine used deHavilland another year airframe testing research Gipsy-engined airplane used its originally-intended purposethe flight development testing pow erful engine also seen static dis play air shows during 1928 1929 What greatest importance first production Gipsy engines started coming off assembly lines June 1928 beginning major new phase lightplane history Tens thousands produced succeeding years still-popular Tiger Moth training touring biplanes decades other Brit ish light aircraft Canadian-built Chipmunk trainers original fourcylinder Gipsy expanded Gipsy Six Comet racers deHavilland Dove light transport built US under license US-built DH60 Gipsy Moths sev eral can still seen flying good weather original G-EBRV its 85-hp Cirrus engine retired iA 1928 hung engineless rafters its birthplace taken down briefly 1933 used advertisement coming Kings Cup Race once again tucked away deHavillands Hatfield shops Comet Racers built Fall 1940 long after end Battle Britain lone German Ju-88 slipped through British defenses plastered factory successful raid during war Several workmen killed pro totype DH71 destroyed record-setting G-EBQU shorter life 1930 sold party Australia September year pilot took off practice forthcoming air race engine quit about 150-ft altitude Moth Racer crashed kill ing its pilot neither original Tiger Moths remained front public very long contributed great deal both engine airframe design progress Great Britain partly plan elsewhere deHavilland desigi can traced back 71 DH77 unsuccessful all-metal low wing interceptor similar look ing much larger 330-hp engine giving top speed about 180 mph As still very much era biplane combat roles Royal Air Force turned up its nose such radical idea Yet least man seemed like idea very much Ameri can racing plane designer Benny Howard turned ut very successful light weight low-powered racer bore strong resemblance DH 71 DGA-3 Pete first competed terms much powerful racers 1930 wire-braced low wing upright American-built 319 cu Cirrus engine its windshield faired smoothly rear engine cowl ingall like DH71 no direct evidence Pete actually copied Tiger Moth Racer shape dimensions close enough suggest least strong inspiration Petes wing span halfway between long short wings DH71 its length just 10 less empty weight 50 lbs gross weight mere 5 lbs less performance close Petes best race course speed 170 mph Cirruspowered Tiger Moth about 166 mph Pete once clocked 195 mph straight run DH71 offi cial 187 mph unofficial 204 mph bigger engine Construction deHavilland midget traditional firm fuselage wooden main structure plywood covering cockpit minimum width partial canopy could entered folding down two sides pic tures make look like no ward visibility quite bad glassed side panels slightly played outwards pilot might look down either side very narrow cowl around upright cylinders La ter enclosed canopy fitted still visibility no worse later high-speed airplanes wings center some con troversy Two sets built least record airplane Standard size 22 6 ones apparently used flights shorter 19-ft set racing wings may have installed probably never flown wings two I-section spars wooden ribs fab ric covering airfoil 8% thick RAF 15 undercamber landing gear formed important part structure Tiger Moth Racer Pairs bracing wires ran front rear spars halfway wing tips wheel hubs tween wheel hubs absorb shock what looks like pretty rigid landing gear bungee cords mounted inside very large wheel bearings Yet cannot help wonder system really good enough rough airfields common 19 20s Specifications two engines flown Tiger Moth Racers Airdisco Cirrus 11301 cu 49 liters 85 hp 2000 rpm rated prob ably turned out maximum 80 hp flight DeHavilland Gipsy319 cu 523 liters 135 hp 2650 rpm bench compression ratio 551 Color schemes two DH7 ls G-EBQUblack nose upper fuselage lettering striping Pale bronze lower fuselage wings tail G-EBRVblack fuselage landing gear racing number striping Clear dope fabric oatmeal color wings tail White racing number fuselage Upper surface wings narrow leading edge stripe tiger stripes rib also horizontal tail ofBQU Basic specifications length 18 7 wing span22 6 wing area long wings76/2 sq ft wheel track3 11 Empty weight 618 lbs gross weight 905 lbs Fuel capacity 20 US gallons last flight deHavilland DH71 1930 Yet today few airplanes aside Formula racers get much speed little power CL Racing/Lee continued page 34 now entries AMA going down around handwriting wall change go like Rat B team Race etc think Jim makes lot sense Two basic ideas first ways competitive flying 1 -oz event second event natural leadin FAT Team Race what about some other lim ited capacity events being flown country know newslet ters get limited-capacity Slow Rat flown Great Southwest AZ CA NM maybe elsewhere people fly think should made Na tional AMA event popular event Would go over given enough exposure Come guys get stick contrib ute What Big Goodyear does compare Formula 40 Goodyear has already proposed RAC whole diatribe might seem like bad case invented showing through hope dont leave impression Limited capacity events fun flew version Slow Rat over five years ago lived Denver limited capacity Two-oz tanks 40s suction two-wheel gear etc ball doing end have pro posed through Racing Advisory Com mittee Class I-Class II breakdown established least several existing events Class would currently flown Class II being tended limited capacity possibly some other version basic rules am experienced types events proposals get through various levels AMA hierarchy out will have contribute expertise get good rules Please dont wait someone else cause probably wont get done 84 Model Aviation