SCALE Bob & Dolly Wischer TWENTY-sixth annual Toledo show annual pilgrimage Toledo always reinforces firm belief scale activity constantly increasing Display scale models manufacturers booths numerically equal shown competing modelers quality suffi Photo left F-i 04s cockpIt molded canopythey required hours detail Door lower right leads armament bay also detailed Photo right models main landing gear features retract cylinders handmade builder use 0 ring seals Forward gear doors close after gear extended Note rivet/fastener details skin custom wheels tires cient excellence make serious Flyline Models Brooke Model Products Model contenders entered compe- Merchants Dave & Als Scale Products tition seemed half commercial Bob Dively representative trend displays something related scale modeling Others such Robart new flat hinge either actual kits models items useful pockets gear struts lean heavily toward category Scale models displayed out- scale market Toledo has become scale numbered other class Commercial modelers world exhibitors specializing scale once rare have year depart Toledo firm become numerous Dave Platt Byron Originals impression have seen ultimate following years show could never surpass its quality year new models appear competitive displays superior anything shown previously leaving us wondering will end Improving perfection must have its limitations find ourselves nitpicking detect minor imperfections certain competition judges faced doing same order determine winners Glen nuno -,ish PZL-1 04 Wilga utility plane minimum balsa plywood used theall-metal model features embossed rnal ribbing its metal covering 16 lb model powered Webra gi Large cockpit has space beneath floor RC equipment Note neatly coiled receiver antenna dangling near landing gear photo right 32 Model Aviation Viewersadmire Jim Funduks Lockheed F-i 04 Starfighter Features 004 aluminum coveron balsa fuselage balsa wings K&B 75 cc engine custom ducted fan unit Toledo winners special breed airplanes Some built flown personal satisfaction see given awards Others pure glitter entered hope winning coveted trophies exposition shows flight minor consideration years number entries kept increasing due high quality models plus fact flight requirement now seems element self-limitation quantity modelers assume have no chance against museum-quality offerings Toledo First place Precision Scale well Best Show won Glen Bussmans PZL 104 Wilga Completely covered aluminum lithoplate sheet model truly spectacular Internally minimum shell structure balsa plywood support metal fuselage tail cone behind cabin area unsupported prototype Rivet de tail embossed aluminum exter nal reinforcing ribs tool formed Metal thickness 005 except tail surfaces 00 2 Built scale 245 foot 90-in span model has sufficiently large interior permit radio servo instal lation beneath cabin floor completely hidden view requirements Toledo complete radio installation Glen purposely permitted coiled antenna dangle fuselage bottom proof present spite large size metal structure complete model weighs modest 16 lbs should too great its Webra 91 engine wing loading 36 oz per sq ft Winner Non-Military Sport Scale Fairchild FC-2 George Clapp featured construction article April 1979 issue Model Aviation historical data three-view drawings month earlier George has finished model flat aluminum Mono Kote fact viewers unwilling believe flat finished material no longer available plane wins after having flown crashed repaired flown again real credit designer-builder Its refresh ing see planes fly well entered Toledo competitions First place Military Sport Scale went another familiar exhibitor Joe Spallone Continued page 114 pXECUTIVE N CORP AmItyvIll NY 11701 August 198033 Weathered worn finish Bill Mikesells Grumman F6F-5 Hellcat helped win 2nd place Precision Scale Toledo year Modeled Bob Holman plans 11/2 scale Merrit Zimmerman designed built deHavilland Moth plane also its 4-cylinder 4-cycle glow-ignition engine its 2 itt scale 10 lb model has 258 oz wing loading engine has displacement 111 cu weighs 30 oz develops g6 hp g500 rpm fuselage full cabin rb flight capability INDER 112 AG 60 EngInes lngspan X st per Ace RIC instructions 14 Electrical adjustments See Construction Manual 1234567 Master Throw adjustments match Master Centering transmitter system VARIANT Reversing SwitchXXX X Dual Rate SwitchXXX Plug-In BoardsXXX JumpersXXXX *6/7 Channel SwXXX ServoCentergAdj. X X X Servo RangeAdjXXXXHi/LuXX Trim Range Adj1112 D/R Servo Range333 Exponential Shape444 Numbers refer notes below following will added Stage 2 * Mixer ContrRngAdj\XXX X ABX Direct BXX *Mixer 2 Cont Rng AdjX X X AB XXXX DirectB X X X X Audio Timer 3 30 mm adjustable time Notes 1 Trim Range screwdriver adjustment Trim Adjust Board installed Trim Range fixed R9 Exponential Function Board used R9 can changed vary Trim Range 2 Trim Range channel 4 set plug-in resistor encoder board can changed suit preferences range adjustment approximately 0% 50% cases 3 The Dual Rate function applies both linear exponential control functions chan nels 1 2 3 Linear/Exponential Switch can also fitted desired 4 The exponential function can adjusted changing plug-in resistors R4 R5 Exponential Function Board 5 Not applicable switched functions Using Alright now its built what can adjusting Master Throw Master Centering controls can make transmitter control systems different Futaba Contest 7 7 channels 131 milliseconds neutral pulse Kraft Sport 4 channels 19 ms neutral Thats pretty wide range know works because Ive done Having made adjustments thereby convert uncomplicated system like Kraft Sport instance servo reversing dual rate exponential control adjustable trim range V-tail mixing host other refine ments OUR AIM KEEP SPORT FLYING THE F UN IN SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT Interprim PLANES 120 E Enlo Rd DOATS ps SOX m CARS TRAINS anWutt 04445301 4 Jo Quyb- 4419 2SS625 WE BUY OR TRADE OLD ENGINES AND KITS Before signing off really must thank Tim Peters Jennings KS suggestions have already included design will see Dave Chesney helpful suggestions encouragement Also Ed Farabaugh extensive list safety considerations expect will show up John Prestons column rest keep writing looking dont answer personally may find answered Thanks George M Myers 70 Froeblich Farm Road Hicks yule NY 11801 RC Scale/Wischers continued page 33 Corsair F4U- IA Except fiberglass fuse lage model covered iberglass cloth Super Coverite given base coat overall Hobbypoxy silver followed Aero Gloss dope Robart retract gear used obtain rotation legs Sonic Systems air actuators Joe also entered Mitsubishi KI-5 Sonia Precision Scale class model finished similar manner panel lines hand-drawn etched silver base No Toledo show would complete masterworks Jim Funduk crowd-pleasing plane year Lockheed F 04-G Starfigbter using 7 diameter custom ducted fan 75 cc K&B engine Built scale 1 model has span 38i length 96 Like P-38 Lightning last year fuselage covered 004 aluminum Handmade retracts have cylinders sealed 0 rings leaked hydraulic fluid realistically four-spar wing sheeted a Judging amount atten tion received F-104 favorite among viewers certainly talked-about plane display comments dealing 11-pound planes ability fly such tiny wing area Wing loading would range 50 60 oz per sq ft will need lot runway Previous efforts high wing loadings have indicated need runways 1000 114 Model Aviation last sentence tells read again PHOTOS BOOKLETSCOJNACCEIESThe thing now learn fly Special GY 014 X 60 solid lines $295 ppdHeliboy new box still using Custom needle valves racing wheelsmechanical mixers provided quick fills fuel shut-a Ifs 8 othersSchluter Id like tell went right out REPLA TECH detailed brochure send 25 cents toand flew like expert would lie INTERNATIONAKustom Kraflsmanship Box 2699 Laguna HillsThis transmitter feels different purpose CATALOGS $200U800 MC KENZU wvCalIf 92653 Ph f714 830-5162 V OA OREGON S4Umind put right back square consider dont like need buy another box repackage components Watch Stage 2 later column LETTERS TO HOT STUFFM ye built model planes past 42 years time adhesives available model builder have changed much its like difference between Wright brothers first flight Appollo moon shot started used some sort banana cement Since Ive probably used glue ever sold wasnt until discovered HOT STUFF really impressed first used novelty time passed became primary ad hesive Now models least 95% HOT STUFF Besides obvious advantages speed high strength Ive found cant beat HOT STUFF lightness 1/4 scale Spad would weigh 20 lbs stead 15 lbs werent HOT STUFF could go on short love HOT STUFFI Sincerely Frank J Forzettin EUJ LINEE ounce HOT STUFFTM ounce IT WASNT UNTIL TRIED HOT STUFF THAT WAS REALLY IMPRESSED GAP FILLING SUPER HOT STUFF 2 oz ALWAYS AT YOUR DEALERS THE WAY YOU WANT IT atee&e C& PO BOX 836 SIMI VALLEY CA 93065 E 805522-0062 ft long 100 ft wide visitor heard say would anxious try its first flight quite confident success Surprisingly its dazzling good looks glamor placed third Precision Scale As past Toledo shows always plane doesnt really stand Out upon closer scrutiny bit overwhelming year honor went Merrit Zimmerman deHavilland Gypsy Moth its clear-doped 60 span wings What made outstanding hand-made scale model operating Gypsy engine occupied its nose Plane engine completely scratch-built four stroke four cylinder glow engine has single ring aluminum pistons chromed steel cylinders 687 bore 75 stroke 111 cu displacement weighs 30 ounces develops 96 hp 12-8 prop 9500 rpm plane placed third Non Military Scale class another example welltried model flights before being brought Toledo Quarter Scale larger models plentiful Walt Mouchas half-size Fly Baby hung ceiling make room display tables did several others including i scale BuhI Bull Pup Hubert Lacey e Stinson SR-9F Fred Nielsen swarm ize Pitts Steen Skybolts Several years ago rirst met Steve Sauger Toledo displayed Stinson Station Wagon needed convinced should try win Nats also become memberofthe US team forworld championship competition Steve has since Sweden England team member year Toledo meet prospective Nats winners team members Joe Spallone mentioned earlier Bill Rafferty entered Focke WuIfTA-152 Precision Scale fourth place both regarded competitive types could become future team members Winning Toledo necessarily ultimate end rather good beginning Scale speed again letter George Wilson says ~Your comment assumption scale speed impossibility aroused pen good friend Milenko Mitrovich full scale aero nautical engineer par excellence finally made aware comparable performance tween real thing its scale cousin speed square root scale factor multi plied speed full-size plane example quarter scale scale ratio 025 square root 025 05 -size speed assumes weight power etc. follow proper scaling factors George also asks What happens stray physics build lighter-thanscale model requires less lift less speed what currently has curiosity compromise modeler would like visual similarity what happens other perfor mance characteristics Can compensated changing angular differences dihedral etc~ tried formula some existing scale models appeared work out approximately speed hoped attain example Pober Pixie I/S scale 02 ratio square root 02 0447 multiplied cruising speed 85 mph results easily attainable speed 38 mph approximately Pixies cruising speed half throttle Assuming its weight 1000 lbs divided 125 cube scale ratio s model 1/5 scale plane would need fly 17 mph true scale speed derived 85 divided 5 always thought should calculated Seventeen mph close dozens jobs better amazing Foredom Miniature Power Tools up benchS Variable speeds models Hundreds Cutters Powerful motor points abrasives Rugged flexible shaft special tools ENGRAVING MI ROUTINGERASING BUmSA craffsmen model makers hobbytata know Foredoms professional quality produces profegsional resulfa Light weight easy-to-hold handpieces Ideal fast super-precise drilling carving sanding grinding buffing dozens ofher operations wood metals plas tics ceramics minerals See dealer send now . Special offer machines handpieces speed confrols tools described FREE Catalog F le No 280A3 DOM B he C 06801 203-792-8622 August 1980 117 CLOCKWISE FROM TOP SPAD 3 KOMET MEISTER ELER STORCH OHIO SUPERSTAR MODEL PRODUCTS INC 5630 Cherokee Drive Canton Uti 441ZU HOBRYHTOEAWAYHOBBYHIT1EAWAYHO8BYHTOEAWAYHOBBYHIOEAWA FAMOUS BRITISH DIESELS MODELLER PLANS SPARES M/E PAw 0/C 2nd EDITION CATALOG-DIESEL HANDBOOK S 300 pp HOBBY HIDEWAYDELAVANIL 309 244-7389 61734 C HOBBYHIDEAWAYHOASYHIDEAWAYHOBBYHIDEAWAYIIOBBYHtDEAW stalling speed 8 lb plane calculated find speed quarter scale P-S Mustang prototype speed 300 mph found model should cruising 150 mph multiplying 300 05 square root 025 seems unreasonably fast 4-size P-SI have observed appear flying about half speed near 75 mph calculations small planes slow prototype speeds large planes reduced small model size seem align typical model speeds know Hot military racing planes large model sizes wouldnt have sufficient power reach speeds formula indicates should scale speed controversy con tinues Have opinion Lets hear light model can flown slower speeds heavier its top speed could faster because drag reduction Reducing angular difference between wing stabilizer would make easier control higher speeds use down trim transmitter would result tab effect would trim changes between high low speed flight Changing dihedral scale model has too great effect appearance would done scale modelers BoboodDolli Wischer Ri 1 S-221 Lapham PeaA Road Delafield WI 5308 CL Speed/Hempel continued page 46 plane sitting takeoff dolly Class job M&M team Cali fornia everybodys favorite husband wife speed team Fred Joyce Mar garido took 1st place Lincoln Nationals 17301 score smooth flying desing Detail powerplant rear intake ABC Rossi fuel supplied John Newton design suction tank sets cut down Tatone pan partially shrouded pipe set 11 length within John Newton eliminator-style glass fuselage uneven length wing panels 010 aluminum basswood spar inboard wing has exposed area 255 sq outboard 18 sq 118 bass wood tail has 20 sq Merced CA site first speed meet year March 16 Some records just laying open waiting grabbed because rule changes Scott Newkirk did 13788 F40 included two laps burning down result plug seal going pftouie No backup flight Will interesting see what new 40% nitro fuel rule will Frank Hunt recorded 18060 backup take Class B record new longer line So much wide open records FAI fliers put some fast times Doug Hinckley turning low 140s John Newton upper 140s Luthor Roy blew everyone away Luke upped record 16029 previous 159 flight backup alky boys appear getting consistency fuel regulator systems now seems lot fine tuning involved Look big speed racing two-day bash over Labor Day weekend Write Frank Hunt details 551 Brookdale Merced CA 95340 pan-holding fixture pictured handy tool quickly easily made Whether pan work press hand tools will make things little easier making pan easy handle Heres put together Cut out two pieces /4 thicker plywood four twelve Next both pieces atop other drill 7/32 hold corner Counter sink holes piece thread 2 x flathead machine screw holes other piece opened up 5/16 Cut window two top piece pictured Now assemble large washers under wingnuts pan can now sandwiched fixture scrap bass ply used under rear pan shim up top surfaces pan trued level wingnuts equally spaced top machine screws year beginning another rules cycle oh boy Let go record saying should just let rules alone go around exception would getting rid builder-of-the-model rule course adding 11 8 Model Aviation R E/XLISN1 SCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL SCALE PILOTS SCALE WHEELS CONTROL-LINECYLINDiRS ENGINE KITS MACHINE GUN KITS FREE-FLIGHT TIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 NEW ZLIN Z5OL AEROBATIC QUARTER SCALE MODEL ENGINE 90 WINGSPAN 80 CONSTRUCTION Foam Wing a Fuselage Tail WING AREA 1122 sq FLYING WEIGHT iOta 11 lbs FiberglasCowl 3/16 Aluminium Landing Gear RosiesD&R Power Pod Fits CDX T- D & Med 049 -051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon Injection mouldedColors Power 3 lb airplanes total weight 3A OL$595RED BLACK WEYELLOW ALSOORANGE MAIC E BANTAM ServosWrite D&RSticksForAFree ConnectorsCatalog Bulkhead SwitchFine Producta mounts TX Safety Switch gua ras avy duty gear Wovid wide uerebng forD 8 aai other fine producu 3501 -C W Moore St Santa Ana CA 927041
Edition: Model Aviation - 1980/08
Page Numbers: 32, 33, 114, 117, 118
SCALE Bob & Dolly Wischer TWENTY-sixth annual Toledo show annual pilgrimage Toledo always reinforces firm belief scale activity constantly increasing Display scale models manufacturers booths numerically equal shown competing modelers quality suffi Photo left F-i 04s cockpIt molded canopythey required hours detail Door lower right leads armament bay also detailed Photo right models main landing gear features retract cylinders handmade builder use 0 ring seals Forward gear doors close after gear extended Note rivet/fastener details skin custom wheels tires cient excellence make serious Flyline Models Brooke Model Products Model contenders entered compe- Merchants Dave & Als Scale Products tition seemed half commercial Bob Dively representative trend displays something related scale modeling Others such Robart new flat hinge either actual kits models items useful pockets gear struts lean heavily toward category Scale models displayed out- scale market Toledo has become scale numbered other class Commercial modelers world exhibitors specializing scale once rare have year depart Toledo firm become numerous Dave Platt Byron Originals impression have seen ultimate following years show could never surpass its quality year new models appear competitive displays superior anything shown previously leaving us wondering will end Improving perfection must have its limitations find ourselves nitpicking detect minor imperfections certain competition judges faced doing same order determine winners Glen nuno -,ish PZL-1 04 Wilga utility plane minimum balsa plywood used theall-metal model features embossed rnal ribbing its metal covering 16 lb model powered Webra gi Large cockpit has space beneath floor RC equipment Note neatly coiled receiver antenna dangling near landing gear photo right 32 Model Aviation Viewersadmire Jim Funduks Lockheed F-i 04 Starfighter Features 004 aluminum coveron balsa fuselage balsa wings K&B 75 cc engine custom ducted fan unit Toledo winners special breed airplanes Some built flown personal satisfaction see given awards Others pure glitter entered hope winning coveted trophies exposition shows flight minor consideration years number entries kept increasing due high quality models plus fact flight requirement now seems element self-limitation quantity modelers assume have no chance against museum-quality offerings Toledo First place Precision Scale well Best Show won Glen Bussmans PZL 104 Wilga Completely covered aluminum lithoplate sheet model truly spectacular Internally minimum shell structure balsa plywood support metal fuselage tail cone behind cabin area unsupported prototype Rivet de tail embossed aluminum exter nal reinforcing ribs tool formed Metal thickness 005 except tail surfaces 00 2 Built scale 245 foot 90-in span model has sufficiently large interior permit radio servo instal lation beneath cabin floor completely hidden view requirements Toledo complete radio installation Glen purposely permitted coiled antenna dangle fuselage bottom proof present spite large size metal structure complete model weighs modest 16 lbs should too great its Webra 91 engine wing loading 36 oz per sq ft Winner Non-Military Sport Scale Fairchild FC-2 George Clapp featured construction article April 1979 issue Model Aviation historical data three-view drawings month earlier George has finished model flat aluminum Mono Kote fact viewers unwilling believe flat finished material no longer available plane wins after having flown crashed repaired flown again real credit designer-builder Its refresh ing see planes fly well entered Toledo competitions First place Military Sport Scale went another familiar exhibitor Joe Spallone Continued page 114 pXECUTIVE N CORP AmItyvIll NY 11701 August 198033 Weathered worn finish Bill Mikesells Grumman F6F-5 Hellcat helped win 2nd place Precision Scale Toledo year Modeled Bob Holman plans 11/2 scale Merrit Zimmerman designed built deHavilland Moth plane also its 4-cylinder 4-cycle glow-ignition engine its 2 itt scale 10 lb model has 258 oz wing loading engine has displacement 111 cu weighs 30 oz develops g6 hp g500 rpm fuselage full cabin rb flight capability INDER 112 AG 60 EngInes lngspan X st per Ace RIC instructions 14 Electrical adjustments See Construction Manual 1234567 Master Throw adjustments match Master Centering transmitter system VARIANT Reversing SwitchXXX X Dual Rate SwitchXXX Plug-In BoardsXXX JumpersXXXX *6/7 Channel SwXXX ServoCentergAdj. X X X Servo RangeAdjXXXXHi/LuXX Trim Range Adj1112 D/R Servo Range333 Exponential Shape444 Numbers refer notes below following will added Stage 2 * Mixer ContrRngAdj\XXX X ABX Direct BXX *Mixer 2 Cont Rng AdjX X X AB XXXX DirectB X X X X Audio Timer 3 30 mm adjustable time Notes 1 Trim Range screwdriver adjustment Trim Adjust Board installed Trim Range fixed R9 Exponential Function Board used R9 can changed vary Trim Range 2 Trim Range channel 4 set plug-in resistor encoder board can changed suit preferences range adjustment approximately 0% 50% cases 3 The Dual Rate function applies both linear exponential control functions chan nels 1 2 3 Linear/Exponential Switch can also fitted desired 4 The exponential function can adjusted changing plug-in resistors R4 R5 Exponential Function Board 5 Not applicable switched functions Using Alright now its built what can adjusting Master Throw Master Centering controls can make transmitter control systems different Futaba Contest 7 7 channels 131 milliseconds neutral pulse Kraft Sport 4 channels 19 ms neutral Thats pretty wide range know works because Ive done Having made adjustments thereby convert uncomplicated system like Kraft Sport instance servo reversing dual rate exponential control adjustable trim range V-tail mixing host other refine ments OUR AIM KEEP SPORT FLYING THE F UN IN SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT Interprim PLANES 120 E Enlo Rd DOATS ps SOX m CARS TRAINS anWutt 04445301 4 Jo Quyb- 4419 2SS625 WE BUY OR TRADE OLD ENGINES AND KITS Before signing off really must thank Tim Peters Jennings KS suggestions have already included design will see Dave Chesney helpful suggestions encouragement Also Ed Farabaugh extensive list safety considerations expect will show up John Prestons column rest keep writing looking dont answer personally may find answered Thanks George M Myers 70 Froeblich Farm Road Hicks yule NY 11801 RC Scale/Wischers continued page 33 Corsair F4U- IA Except fiberglass fuse lage model covered iberglass cloth Super Coverite given base coat overall Hobbypoxy silver followed Aero Gloss dope Robart retract gear used obtain rotation legs Sonic Systems air actuators Joe also entered Mitsubishi KI-5 Sonia Precision Scale class model finished similar manner panel lines hand-drawn etched silver base No Toledo show would complete masterworks Jim Funduk crowd-pleasing plane year Lockheed F 04-G Starfigbter using 7 diameter custom ducted fan 75 cc K&B engine Built scale 1 model has span 38i length 96 Like P-38 Lightning last year fuselage covered 004 aluminum Handmade retracts have cylinders sealed 0 rings leaked hydraulic fluid realistically four-spar wing sheeted a Judging amount atten tion received F-104 favorite among viewers certainly talked-about plane display comments dealing 11-pound planes ability fly such tiny wing area Wing loading would range 50 60 oz per sq ft will need lot runway Previous efforts high wing loadings have indicated need runways 1000 114 Model Aviation last sentence tells read again PHOTOS BOOKLETSCOJNACCEIESThe thing now learn fly Special GY 014 X 60 solid lines $295 ppdHeliboy new box still using Custom needle valves racing wheelsmechanical mixers provided quick fills fuel shut-a Ifs 8 othersSchluter Id like tell went right out REPLA TECH detailed brochure send 25 cents toand flew like expert would lie INTERNATIONAKustom Kraflsmanship Box 2699 Laguna HillsThis transmitter feels different purpose CATALOGS $200U800 MC KENZU wvCalIf 92653 Ph f714 830-5162 V OA OREGON S4Umind put right back square consider dont like need buy another box repackage components Watch Stage 2 later column LETTERS TO HOT STUFFM ye built model planes past 42 years time adhesives available model builder have changed much its like difference between Wright brothers first flight Appollo moon shot started used some sort banana cement Since Ive probably used glue ever sold wasnt until discovered HOT STUFF really impressed first used novelty time passed became primary ad hesive Now models least 95% HOT STUFF Besides obvious advantages speed high strength Ive found cant beat HOT STUFF lightness 1/4 scale Spad would weigh 20 lbs stead 15 lbs werent HOT STUFF could go on short love HOT STUFFI Sincerely Frank J Forzettin EUJ LINEE ounce HOT STUFFTM ounce IT WASNT UNTIL TRIED HOT STUFF THAT WAS REALLY IMPRESSED GAP FILLING SUPER HOT STUFF 2 oz ALWAYS AT YOUR DEALERS THE WAY YOU WANT IT atee&e C& PO BOX 836 SIMI VALLEY CA 93065 E 805522-0062 ft long 100 ft wide visitor heard say would anxious try its first flight quite confident success Surprisingly its dazzling good looks glamor placed third Precision Scale As past Toledo shows always plane doesnt really stand Out upon closer scrutiny bit overwhelming year honor went Merrit Zimmerman deHavilland Gypsy Moth its clear-doped 60 span wings What made outstanding hand-made scale model operating Gypsy engine occupied its nose Plane engine completely scratch-built four stroke four cylinder glow engine has single ring aluminum pistons chromed steel cylinders 687 bore 75 stroke 111 cu displacement weighs 30 ounces develops 96 hp 12-8 prop 9500 rpm plane placed third Non Military Scale class another example welltried model flights before being brought Toledo Quarter Scale larger models plentiful Walt Mouchas half-size Fly Baby hung ceiling make room display tables did several others including i scale BuhI Bull Pup Hubert Lacey e Stinson SR-9F Fred Nielsen swarm ize Pitts Steen Skybolts Several years ago rirst met Steve Sauger Toledo displayed Stinson Station Wagon needed convinced should try win Nats also become memberofthe US team forworld championship competition Steve has since Sweden England team member year Toledo meet prospective Nats winners team members Joe Spallone mentioned earlier Bill Rafferty entered Focke WuIfTA-152 Precision Scale fourth place both regarded competitive types could become future team members Winning Toledo necessarily ultimate end rather good beginning Scale speed again letter George Wilson says ~Your comment assumption scale speed impossibility aroused pen good friend Milenko Mitrovich full scale aero nautical engineer par excellence finally made aware comparable performance tween real thing its scale cousin speed square root scale factor multi plied speed full-size plane example quarter scale scale ratio 025 square root 025 05 -size speed assumes weight power etc. follow proper scaling factors George also asks What happens stray physics build lighter-thanscale model requires less lift less speed what currently has curiosity compromise modeler would like visual similarity what happens other perfor mance characteristics Can compensated changing angular differences dihedral etc~ tried formula some existing scale models appeared work out approximately speed hoped attain example Pober Pixie I/S scale 02 ratio square root 02 0447 multiplied cruising speed 85 mph results easily attainable speed 38 mph approximately Pixies cruising speed half throttle Assuming its weight 1000 lbs divided 125 cube scale ratio s model 1/5 scale plane would need fly 17 mph true scale speed derived 85 divided 5 always thought should calculated Seventeen mph close dozens jobs better amazing Foredom Miniature Power Tools up benchS Variable speeds models Hundreds Cutters Powerful motor points abrasives Rugged flexible shaft special tools ENGRAVING MI ROUTINGERASING BUmSA craffsmen model makers hobbytata know Foredoms professional quality produces profegsional resulfa Light weight easy-to-hold handpieces Ideal fast super-precise drilling carving sanding grinding buffing dozens ofher operations wood metals plas tics ceramics minerals See dealer send now . Special offer machines handpieces speed confrols tools described FREE Catalog F le No 280A3 DOM B he C 06801 203-792-8622 August 1980 117 CLOCKWISE FROM TOP SPAD 3 KOMET MEISTER ELER STORCH OHIO SUPERSTAR MODEL PRODUCTS INC 5630 Cherokee Drive Canton Uti 441ZU HOBRYHTOEAWAYHOBBYHIT1EAWAYHO8BYHTOEAWAYHOBBYHIOEAWA FAMOUS BRITISH DIESELS MODELLER PLANS SPARES M/E PAw 0/C 2nd EDITION CATALOG-DIESEL HANDBOOK S 300 pp HOBBY HIDEWAYDELAVANIL 309 244-7389 61734 C HOBBYHIDEAWAYHOASYHIDEAWAYHOBBYHIDEAWAYIIOBBYHtDEAW stalling speed 8 lb plane calculated find speed quarter scale P-S Mustang prototype speed 300 mph found model should cruising 150 mph multiplying 300 05 square root 025 seems unreasonably fast 4-size P-SI have observed appear flying about half speed near 75 mph calculations small planes slow prototype speeds large planes reduced small model size seem align typical model speeds know Hot military racing planes large model sizes wouldnt have sufficient power reach speeds formula indicates should scale speed controversy con tinues Have opinion Lets hear light model can flown slower speeds heavier its top speed could faster because drag reduction Reducing angular difference between wing stabilizer would make easier control higher speeds use down trim transmitter would result tab effect would trim changes between high low speed flight Changing dihedral scale model has too great effect appearance would done scale modelers BoboodDolli Wischer Ri 1 S-221 Lapham PeaA Road Delafield WI 5308 CL Speed/Hempel continued page 46 plane sitting takeoff dolly Class job M&M team Cali fornia everybodys favorite husband wife speed team Fred Joyce Mar garido took 1st place Lincoln Nationals 17301 score smooth flying desing Detail powerplant rear intake ABC Rossi fuel supplied John Newton design suction tank sets cut down Tatone pan partially shrouded pipe set 11 length within John Newton eliminator-style glass fuselage uneven length wing panels 010 aluminum basswood spar inboard wing has exposed area 255 sq outboard 18 sq 118 bass wood tail has 20 sq Merced CA site first speed meet year March 16 Some records just laying open waiting grabbed because rule changes Scott Newkirk did 13788 F40 included two laps burning down result plug seal going pftouie No backup flight Will interesting see what new 40% nitro fuel rule will Frank Hunt recorded 18060 backup take Class B record new longer line So much wide open records FAI fliers put some fast times Doug Hinckley turning low 140s John Newton upper 140s Luthor Roy blew everyone away Luke upped record 16029 previous 159 flight backup alky boys appear getting consistency fuel regulator systems now seems lot fine tuning involved Look big speed racing two-day bash over Labor Day weekend Write Frank Hunt details 551 Brookdale Merced CA 95340 pan-holding fixture pictured handy tool quickly easily made Whether pan work press hand tools will make things little easier making pan easy handle Heres put together Cut out two pieces /4 thicker plywood four twelve Next both pieces atop other drill 7/32 hold corner Counter sink holes piece thread 2 x flathead machine screw holes other piece opened up 5/16 Cut window two top piece pictured Now assemble large washers under wingnuts pan can now sandwiched fixture scrap bass ply used under rear pan shim up top surfaces pan trued level wingnuts equally spaced top machine screws year beginning another rules cycle oh boy Let go record saying should just let rules alone go around exception would getting rid builder-of-the-model rule course adding 11 8 Model Aviation R E/XLISN1 SCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL SCALE PILOTS SCALE WHEELS CONTROL-LINECYLINDiRS ENGINE KITS MACHINE GUN KITS FREE-FLIGHT TIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 NEW ZLIN Z5OL AEROBATIC QUARTER SCALE MODEL ENGINE 90 WINGSPAN 80 CONSTRUCTION Foam Wing a Fuselage Tail WING AREA 1122 sq FLYING WEIGHT iOta 11 lbs FiberglasCowl 3/16 Aluminium Landing Gear RosiesD&R Power Pod Fits CDX T- D & Med 049 -051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon Injection mouldedColors Power 3 lb airplanes total weight 3A OL$595RED BLACK WEYELLOW ALSOORANGE MAIC E BANTAM ServosWrite D&RSticksForAFree ConnectorsCatalog Bulkhead SwitchFine Producta mounts TX Safety Switch gua ras avy duty gear Wovid wide uerebng forD 8 aai other fine producu 3501 -C W Moore St Santa Ana CA 927041
Edition: Model Aviation - 1980/08
Page Numbers: 32, 33, 114, 117, 118
SCALE Bob & Dolly Wischer TWENTY-sixth annual Toledo show annual pilgrimage Toledo always reinforces firm belief scale activity constantly increasing Display scale models manufacturers booths numerically equal shown competing modelers quality suffi Photo left F-i 04s cockpIt molded canopythey required hours detail Door lower right leads armament bay also detailed Photo right models main landing gear features retract cylinders handmade builder use 0 ring seals Forward gear doors close after gear extended Note rivet/fastener details skin custom wheels tires cient excellence make serious Flyline Models Brooke Model Products Model contenders entered compe- Merchants Dave & Als Scale Products tition seemed half commercial Bob Dively representative trend displays something related scale modeling Others such Robart new flat hinge either actual kits models items useful pockets gear struts lean heavily toward category Scale models displayed out- scale market Toledo has become scale numbered other class Commercial modelers world exhibitors specializing scale once rare have year depart Toledo firm become numerous Dave Platt Byron Originals impression have seen ultimate following years show could never surpass its quality year new models appear competitive displays superior anything shown previously leaving us wondering will end Improving perfection must have its limitations find ourselves nitpicking detect minor imperfections certain competition judges faced doing same order determine winners Glen nuno -,ish PZL-1 04 Wilga utility plane minimum balsa plywood used theall-metal model features embossed rnal ribbing its metal covering 16 lb model powered Webra gi Large cockpit has space beneath floor RC equipment Note neatly coiled receiver antenna dangling near landing gear photo right 32 Model Aviation Viewersadmire Jim Funduks Lockheed F-i 04 Starfighter Features 004 aluminum coveron balsa fuselage balsa wings K&B 75 cc engine custom ducted fan unit Toledo winners special breed airplanes Some built flown personal satisfaction see given awards Others pure glitter entered hope winning coveted trophies exposition shows flight minor consideration years number entries kept increasing due high quality models plus fact flight requirement now seems element self-limitation quantity modelers assume have no chance against museum-quality offerings Toledo First place Precision Scale well Best Show won Glen Bussmans PZL 104 Wilga Completely covered aluminum lithoplate sheet model truly spectacular Internally minimum shell structure balsa plywood support metal fuselage tail cone behind cabin area unsupported prototype Rivet de tail embossed aluminum exter nal reinforcing ribs tool formed Metal thickness 005 except tail surfaces 00 2 Built scale 245 foot 90-in span model has sufficiently large interior permit radio servo instal lation beneath cabin floor completely hidden view requirements Toledo complete radio installation Glen purposely permitted coiled antenna dangle fuselage bottom proof present spite large size metal structure complete model weighs modest 16 lbs should too great its Webra 91 engine wing loading 36 oz per sq ft Winner Non-Military Sport Scale Fairchild FC-2 George Clapp featured construction article April 1979 issue Model Aviation historical data three-view drawings month earlier George has finished model flat aluminum Mono Kote fact viewers unwilling believe flat finished material no longer available plane wins after having flown crashed repaired flown again real credit designer-builder Its refresh ing see planes fly well entered Toledo competitions First place Military Sport Scale went another familiar exhibitor Joe Spallone Continued page 114 pXECUTIVE N CORP AmItyvIll NY 11701 August 198033 Weathered worn finish Bill Mikesells Grumman F6F-5 Hellcat helped win 2nd place Precision Scale Toledo year Modeled Bob Holman plans 11/2 scale Merrit Zimmerman designed built deHavilland Moth plane also its 4-cylinder 4-cycle glow-ignition engine its 2 itt scale 10 lb model has 258 oz wing loading engine has displacement 111 cu weighs 30 oz develops g6 hp g500 rpm fuselage full cabin rb flight capability INDER 112 AG 60 EngInes lngspan X st per Ace RIC instructions 14 Electrical adjustments See Construction Manual 1234567 Master Throw adjustments match Master Centering transmitter system VARIANT Reversing SwitchXXX X Dual Rate SwitchXXX Plug-In BoardsXXX JumpersXXXX *6/7 Channel SwXXX ServoCentergAdj. X X X Servo RangeAdjXXXXHi/LuXX Trim Range Adj1112 D/R Servo Range333 Exponential Shape444 Numbers refer notes below following will added Stage 2 * Mixer ContrRngAdj\XXX X ABX Direct BXX *Mixer 2 Cont Rng AdjX X X AB XXXX DirectB X X X X Audio Timer 3 30 mm adjustable time Notes 1 Trim Range screwdriver adjustment Trim Adjust Board installed Trim Range fixed R9 Exponential Function Board used R9 can changed vary Trim Range 2 Trim Range channel 4 set plug-in resistor encoder board can changed suit preferences range adjustment approximately 0% 50% cases 3 The Dual Rate function applies both linear exponential control functions chan nels 1 2 3 Linear/Exponential Switch can also fitted desired 4 The exponential function can adjusted changing plug-in resistors R4 R5 Exponential Function Board 5 Not applicable switched functions Using Alright now its built what can adjusting Master Throw Master Centering controls can make transmitter control systems different Futaba Contest 7 7 channels 131 milliseconds neutral pulse Kraft Sport 4 channels 19 ms neutral Thats pretty wide range know works because Ive done Having made adjustments thereby convert uncomplicated system like Kraft Sport instance servo reversing dual rate exponential control adjustable trim range V-tail mixing host other refine ments OUR AIM KEEP SPORT FLYING THE F UN IN SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT Interprim PLANES 120 E Enlo Rd DOATS ps SOX m CARS TRAINS anWutt 04445301 4 Jo Quyb- 4419 2SS625 WE BUY OR TRADE OLD ENGINES AND KITS Before signing off really must thank Tim Peters Jennings KS suggestions have already included design will see Dave Chesney helpful suggestions encouragement Also Ed Farabaugh extensive list safety considerations expect will show up John Prestons column rest keep writing looking dont answer personally may find answered Thanks George M Myers 70 Froeblich Farm Road Hicks yule NY 11801 RC Scale/Wischers continued page 33 Corsair F4U- IA Except fiberglass fuse lage model covered iberglass cloth Super Coverite given base coat overall Hobbypoxy silver followed Aero Gloss dope Robart retract gear used obtain rotation legs Sonic Systems air actuators Joe also entered Mitsubishi KI-5 Sonia Precision Scale class model finished similar manner panel lines hand-drawn etched silver base No Toledo show would complete masterworks Jim Funduk crowd-pleasing plane year Lockheed F 04-G Starfigbter using 7 diameter custom ducted fan 75 cc K&B engine Built scale 1 model has span 38i length 96 Like P-38 Lightning last year fuselage covered 004 aluminum Handmade retracts have cylinders sealed 0 rings leaked hydraulic fluid realistically four-spar wing sheeted a Judging amount atten tion received F-104 favorite among viewers certainly talked-about plane display comments dealing 11-pound planes ability fly such tiny wing area Wing loading would range 50 60 oz per sq ft will need lot runway Previous efforts high wing loadings have indicated need runways 1000 114 Model Aviation last sentence tells read again PHOTOS BOOKLETSCOJNACCEIESThe thing now learn fly Special GY 014 X 60 solid lines $295 ppdHeliboy new box still using Custom needle valves racing wheelsmechanical mixers provided quick fills fuel shut-a Ifs 8 othersSchluter Id like tell went right out REPLA TECH detailed brochure send 25 cents toand flew like expert would lie INTERNATIONAKustom Kraflsmanship Box 2699 Laguna HillsThis transmitter feels different purpose CATALOGS $200U800 MC KENZU wvCalIf 92653 Ph f714 830-5162 V OA OREGON S4Umind put right back square consider dont like need buy another box repackage components Watch Stage 2 later column LETTERS TO HOT STUFFM ye built model planes past 42 years time adhesives available model builder have changed much its like difference between Wright brothers first flight Appollo moon shot started used some sort banana cement Since Ive probably used glue ever sold wasnt until discovered HOT STUFF really impressed first used novelty time passed became primary ad hesive Now models least 95% HOT STUFF Besides obvious advantages speed high strength Ive found cant beat HOT STUFF lightness 1/4 scale Spad would weigh 20 lbs stead 15 lbs werent HOT STUFF could go on short love HOT STUFFI Sincerely Frank J Forzettin EUJ LINEE ounce HOT STUFFTM ounce IT WASNT UNTIL TRIED HOT STUFF THAT WAS REALLY IMPRESSED GAP FILLING SUPER HOT STUFF 2 oz ALWAYS AT YOUR DEALERS THE WAY YOU WANT IT atee&e C& PO BOX 836 SIMI VALLEY CA 93065 E 805522-0062 ft long 100 ft wide visitor heard say would anxious try its first flight quite confident success Surprisingly its dazzling good looks glamor placed third Precision Scale As past Toledo shows always plane doesnt really stand Out upon closer scrutiny bit overwhelming year honor went Merrit Zimmerman deHavilland Gypsy Moth its clear-doped 60 span wings What made outstanding hand-made scale model operating Gypsy engine occupied its nose Plane engine completely scratch-built four stroke four cylinder glow engine has single ring aluminum pistons chromed steel cylinders 687 bore 75 stroke 111 cu displacement weighs 30 ounces develops 96 hp 12-8 prop 9500 rpm plane placed third Non Military Scale class another example welltried model flights before being brought Toledo Quarter Scale larger models plentiful Walt Mouchas half-size Fly Baby hung ceiling make room display tables did several others including i scale BuhI Bull Pup Hubert Lacey e Stinson SR-9F Fred Nielsen swarm ize Pitts Steen Skybolts Several years ago rirst met Steve Sauger Toledo displayed Stinson Station Wagon needed convinced should try win Nats also become memberofthe US team forworld championship competition Steve has since Sweden England team member year Toledo meet prospective Nats winners team members Joe Spallone mentioned earlier Bill Rafferty entered Focke WuIfTA-152 Precision Scale fourth place both regarded competitive types could become future team members Winning Toledo necessarily ultimate end rather good beginning Scale speed again letter George Wilson says ~Your comment assumption scale speed impossibility aroused pen good friend Milenko Mitrovich full scale aero nautical engineer par excellence finally made aware comparable performance tween real thing its scale cousin speed square root scale factor multi plied speed full-size plane example quarter scale scale ratio 025 square root 025 05 -size speed assumes weight power etc. follow proper scaling factors George also asks What happens stray physics build lighter-thanscale model requires less lift less speed what currently has curiosity compromise modeler would like visual similarity what happens other perfor mance characteristics Can compensated changing angular differences dihedral etc~ tried formula some existing scale models appeared work out approximately speed hoped attain example Pober Pixie I/S scale 02 ratio square root 02 0447 multiplied cruising speed 85 mph results easily attainable speed 38 mph approximately Pixies cruising speed half throttle Assuming its weight 1000 lbs divided 125 cube scale ratio s model 1/5 scale plane would need fly 17 mph true scale speed derived 85 divided 5 always thought should calculated Seventeen mph close dozens jobs better amazing Foredom Miniature Power Tools up benchS Variable speeds models Hundreds Cutters Powerful motor points abrasives Rugged flexible shaft special tools ENGRAVING MI ROUTINGERASING BUmSA craffsmen model makers hobbytata know Foredoms professional quality produces profegsional resulfa Light weight easy-to-hold handpieces Ideal fast super-precise drilling carving sanding grinding buffing dozens ofher operations wood metals plas tics ceramics minerals See dealer send now . Special offer machines handpieces speed confrols tools described FREE Catalog F le No 280A3 DOM B he C 06801 203-792-8622 August 1980 117 CLOCKWISE FROM TOP SPAD 3 KOMET MEISTER ELER STORCH OHIO SUPERSTAR MODEL PRODUCTS INC 5630 Cherokee Drive Canton Uti 441ZU HOBRYHTOEAWAYHOBBYHIT1EAWAYHO8BYHTOEAWAYHOBBYHIOEAWA FAMOUS BRITISH DIESELS MODELLER PLANS SPARES M/E PAw 0/C 2nd EDITION CATALOG-DIESEL HANDBOOK S 300 pp HOBBY HIDEWAYDELAVANIL 309 244-7389 61734 C HOBBYHIDEAWAYHOASYHIDEAWAYHOBBYHIDEAWAYIIOBBYHtDEAW stalling speed 8 lb plane calculated find speed quarter scale P-S Mustang prototype speed 300 mph found model should cruising 150 mph multiplying 300 05 square root 025 seems unreasonably fast 4-size P-SI have observed appear flying about half speed near 75 mph calculations small planes slow prototype speeds large planes reduced small model size seem align typical model speeds know Hot military racing planes large model sizes wouldnt have sufficient power reach speeds formula indicates should scale speed controversy con tinues Have opinion Lets hear light model can flown slower speeds heavier its top speed could faster because drag reduction Reducing angular difference between wing stabilizer would make easier control higher speeds use down trim transmitter would result tab effect would trim changes between high low speed flight Changing dihedral scale model has too great effect appearance would done scale modelers BoboodDolli Wischer Ri 1 S-221 Lapham PeaA Road Delafield WI 5308 CL Speed/Hempel continued page 46 plane sitting takeoff dolly Class job M&M team Cali fornia everybodys favorite husband wife speed team Fred Joyce Mar garido took 1st place Lincoln Nationals 17301 score smooth flying desing Detail powerplant rear intake ABC Rossi fuel supplied John Newton design suction tank sets cut down Tatone pan partially shrouded pipe set 11 length within John Newton eliminator-style glass fuselage uneven length wing panels 010 aluminum basswood spar inboard wing has exposed area 255 sq outboard 18 sq 118 bass wood tail has 20 sq Merced CA site first speed meet year March 16 Some records just laying open waiting grabbed because rule changes Scott Newkirk did 13788 F40 included two laps burning down result plug seal going pftouie No backup flight Will interesting see what new 40% nitro fuel rule will Frank Hunt recorded 18060 backup take Class B record new longer line So much wide open records FAI fliers put some fast times Doug Hinckley turning low 140s John Newton upper 140s Luthor Roy blew everyone away Luke upped record 16029 previous 159 flight backup alky boys appear getting consistency fuel regulator systems now seems lot fine tuning involved Look big speed racing two-day bash over Labor Day weekend Write Frank Hunt details 551 Brookdale Merced CA 95340 pan-holding fixture pictured handy tool quickly easily made Whether pan work press hand tools will make things little easier making pan easy handle Heres put together Cut out two pieces /4 thicker plywood four twelve Next both pieces atop other drill 7/32 hold corner Counter sink holes piece thread 2 x flathead machine screw holes other piece opened up 5/16 Cut window two top piece pictured Now assemble large washers under wingnuts pan can now sandwiched fixture scrap bass ply used under rear pan shim up top surfaces pan trued level wingnuts equally spaced top machine screws year beginning another rules cycle oh boy Let go record saying should just let rules alone go around exception would getting rid builder-of-the-model rule course adding 11 8 Model Aviation R E/XLISN1 SCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL SCALE PILOTS SCALE WHEELS CONTROL-LINECYLINDiRS ENGINE KITS MACHINE GUN KITS FREE-FLIGHT TIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 NEW ZLIN Z5OL AEROBATIC QUARTER SCALE MODEL ENGINE 90 WINGSPAN 80 CONSTRUCTION Foam Wing a Fuselage Tail WING AREA 1122 sq FLYING WEIGHT iOta 11 lbs FiberglasCowl 3/16 Aluminium Landing Gear RosiesD&R Power Pod Fits CDX T- D & Med 049 -051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon Injection mouldedColors Power 3 lb airplanes total weight 3A OL$595RED BLACK WEYELLOW ALSOORANGE MAIC E BANTAM ServosWrite D&RSticksForAFree ConnectorsCatalog Bulkhead SwitchFine Producta mounts TX Safety Switch gua ras avy duty gear Wovid wide uerebng forD 8 aai other fine producu 3501 -C W Moore St Santa Ana CA 927041
Edition: Model Aviation - 1980/08
Page Numbers: 32, 33, 114, 117, 118
SCALE Bob & Dolly Wischer TWENTY-sixth annual Toledo show annual pilgrimage Toledo always reinforces firm belief scale activity constantly increasing Display scale models manufacturers booths numerically equal shown competing modelers quality suffi Photo left F-i 04s cockpIt molded canopythey required hours detail Door lower right leads armament bay also detailed Photo right models main landing gear features retract cylinders handmade builder use 0 ring seals Forward gear doors close after gear extended Note rivet/fastener details skin custom wheels tires cient excellence make serious Flyline Models Brooke Model Products Model contenders entered compe- Merchants Dave & Als Scale Products tition seemed half commercial Bob Dively representative trend displays something related scale modeling Others such Robart new flat hinge either actual kits models items useful pockets gear struts lean heavily toward category Scale models displayed out- scale market Toledo has become scale numbered other class Commercial modelers world exhibitors specializing scale once rare have year depart Toledo firm become numerous Dave Platt Byron Originals impression have seen ultimate following years show could never surpass its quality year new models appear competitive displays superior anything shown previously leaving us wondering will end Improving perfection must have its limitations find ourselves nitpicking detect minor imperfections certain competition judges faced doing same order determine winners Glen nuno -,ish PZL-1 04 Wilga utility plane minimum balsa plywood used theall-metal model features embossed rnal ribbing its metal covering 16 lb model powered Webra gi Large cockpit has space beneath floor RC equipment Note neatly coiled receiver antenna dangling near landing gear photo right 32 Model Aviation Viewersadmire Jim Funduks Lockheed F-i 04 Starfighter Features 004 aluminum coveron balsa fuselage balsa wings K&B 75 cc engine custom ducted fan unit Toledo winners special breed airplanes Some built flown personal satisfaction see given awards Others pure glitter entered hope winning coveted trophies exposition shows flight minor consideration years number entries kept increasing due high quality models plus fact flight requirement now seems element self-limitation quantity modelers assume have no chance against museum-quality offerings Toledo First place Precision Scale well Best Show won Glen Bussmans PZL 104 Wilga Completely covered aluminum lithoplate sheet model truly spectacular Internally minimum shell structure balsa plywood support metal fuselage tail cone behind cabin area unsupported prototype Rivet de tail embossed aluminum exter nal reinforcing ribs tool formed Metal thickness 005 except tail surfaces 00 2 Built scale 245 foot 90-in span model has sufficiently large interior permit radio servo instal lation beneath cabin floor completely hidden view requirements Toledo complete radio installation Glen purposely permitted coiled antenna dangle fuselage bottom proof present spite large size metal structure complete model weighs modest 16 lbs should too great its Webra 91 engine wing loading 36 oz per sq ft Winner Non-Military Sport Scale Fairchild FC-2 George Clapp featured construction article April 1979 issue Model Aviation historical data three-view drawings month earlier George has finished model flat aluminum Mono Kote fact viewers unwilling believe flat finished material no longer available plane wins after having flown crashed repaired flown again real credit designer-builder Its refresh ing see planes fly well entered Toledo competitions First place Military Sport Scale went another familiar exhibitor Joe Spallone Continued page 114 pXECUTIVE N CORP AmItyvIll NY 11701 August 198033 Weathered worn finish Bill Mikesells Grumman F6F-5 Hellcat helped win 2nd place Precision Scale Toledo year Modeled Bob Holman plans 11/2 scale Merrit Zimmerman designed built deHavilland Moth plane also its 4-cylinder 4-cycle glow-ignition engine its 2 itt scale 10 lb model has 258 oz wing loading engine has displacement 111 cu weighs 30 oz develops g6 hp g500 rpm fuselage full cabin rb flight capability INDER 112 AG 60 EngInes lngspan X st per Ace RIC instructions 14 Electrical adjustments See Construction Manual 1234567 Master Throw adjustments match Master Centering transmitter system VARIANT Reversing SwitchXXX X Dual Rate SwitchXXX Plug-In BoardsXXX JumpersXXXX *6/7 Channel SwXXX ServoCentergAdj. X X X Servo RangeAdjXXXXHi/LuXX Trim Range Adj1112 D/R Servo Range333 Exponential Shape444 Numbers refer notes below following will added Stage 2 * Mixer ContrRngAdj\XXX X ABX Direct BXX *Mixer 2 Cont Rng AdjX X X AB XXXX DirectB X X X X Audio Timer 3 30 mm adjustable time Notes 1 Trim Range screwdriver adjustment Trim Adjust Board installed Trim Range fixed R9 Exponential Function Board used R9 can changed vary Trim Range 2 Trim Range channel 4 set plug-in resistor encoder board can changed suit preferences range adjustment approximately 0% 50% cases 3 The Dual Rate function applies both linear exponential control functions chan nels 1 2 3 Linear/Exponential Switch can also fitted desired 4 The exponential function can adjusted changing plug-in resistors R4 R5 Exponential Function Board 5 Not applicable switched functions Using Alright now its built what can adjusting Master Throw Master Centering controls can make transmitter control systems different Futaba Contest 7 7 channels 131 milliseconds neutral pulse Kraft Sport 4 channels 19 ms neutral Thats pretty wide range know works because Ive done Having made adjustments thereby convert uncomplicated system like Kraft Sport instance servo reversing dual rate exponential control adjustable trim range V-tail mixing host other refine ments OUR AIM KEEP SPORT FLYING THE F UN IN SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT Interprim PLANES 120 E Enlo Rd DOATS ps SOX m CARS TRAINS anWutt 04445301 4 Jo Quyb- 4419 2SS625 WE BUY OR TRADE OLD ENGINES AND KITS Before signing off really must thank Tim Peters Jennings KS suggestions have already included design will see Dave Chesney helpful suggestions encouragement Also Ed Farabaugh extensive list safety considerations expect will show up John Prestons column rest keep writing looking dont answer personally may find answered Thanks George M Myers 70 Froeblich Farm Road Hicks yule NY 11801 RC Scale/Wischers continued page 33 Corsair F4U- IA Except fiberglass fuse lage model covered iberglass cloth Super Coverite given base coat overall Hobbypoxy silver followed Aero Gloss dope Robart retract gear used obtain rotation legs Sonic Systems air actuators Joe also entered Mitsubishi KI-5 Sonia Precision Scale class model finished similar manner panel lines hand-drawn etched silver base No Toledo show would complete masterworks Jim Funduk crowd-pleasing plane year Lockheed F 04-G Starfigbter using 7 diameter custom ducted fan 75 cc K&B engine Built scale 1 model has span 38i length 96 Like P-38 Lightning last year fuselage covered 004 aluminum Handmade retracts have cylinders sealed 0 rings leaked hydraulic fluid realistically four-spar wing sheeted a Judging amount atten tion received F-104 favorite among viewers certainly talked-about plane display comments dealing 11-pound planes ability fly such tiny wing area Wing loading would range 50 60 oz per sq ft will need lot runway Previous efforts high wing loadings have indicated need runways 1000 114 Model Aviation last sentence tells read again PHOTOS BOOKLETSCOJNACCEIESThe thing now learn fly Special GY 014 X 60 solid lines $295 ppdHeliboy new box still using Custom needle valves racing wheelsmechanical mixers provided quick fills fuel shut-a Ifs 8 othersSchluter Id like tell went right out REPLA TECH detailed brochure send 25 cents toand flew like expert would lie INTERNATIONAKustom Kraflsmanship Box 2699 Laguna HillsThis transmitter feels different purpose CATALOGS $200U800 MC KENZU wvCalIf 92653 Ph f714 830-5162 V OA OREGON S4Umind put right back square consider dont like need buy another box repackage components Watch Stage 2 later column LETTERS TO HOT STUFFM ye built model planes past 42 years time adhesives available model builder have changed much its like difference between Wright brothers first flight Appollo moon shot started used some sort banana cement Since Ive probably used glue ever sold wasnt until discovered HOT STUFF really impressed first used novelty time passed became primary ad hesive Now models least 95% HOT STUFF Besides obvious advantages speed high strength Ive found cant beat HOT STUFF lightness 1/4 scale Spad would weigh 20 lbs stead 15 lbs werent HOT STUFF could go on short love HOT STUFFI Sincerely Frank J Forzettin EUJ LINEE ounce HOT STUFFTM ounce IT WASNT UNTIL TRIED HOT STUFF THAT WAS REALLY IMPRESSED GAP FILLING SUPER HOT STUFF 2 oz ALWAYS AT YOUR DEALERS THE WAY YOU WANT IT atee&e C& PO BOX 836 SIMI VALLEY CA 93065 E 805522-0062 ft long 100 ft wide visitor heard say would anxious try its first flight quite confident success Surprisingly its dazzling good looks glamor placed third Precision Scale As past Toledo shows always plane doesnt really stand Out upon closer scrutiny bit overwhelming year honor went Merrit Zimmerman deHavilland Gypsy Moth its clear-doped 60 span wings What made outstanding hand-made scale model operating Gypsy engine occupied its nose Plane engine completely scratch-built four stroke four cylinder glow engine has single ring aluminum pistons chromed steel cylinders 687 bore 75 stroke 111 cu displacement weighs 30 ounces develops 96 hp 12-8 prop 9500 rpm plane placed third Non Military Scale class another example welltried model flights before being brought Toledo Quarter Scale larger models plentiful Walt Mouchas half-size Fly Baby hung ceiling make room display tables did several others including i scale BuhI Bull Pup Hubert Lacey e Stinson SR-9F Fred Nielsen swarm ize Pitts Steen Skybolts Several years ago rirst met Steve Sauger Toledo displayed Stinson Station Wagon needed convinced should try win Nats also become memberofthe US team forworld championship competition Steve has since Sweden England team member year Toledo meet prospective Nats winners team members Joe Spallone mentioned earlier Bill Rafferty entered Focke WuIfTA-152 Precision Scale fourth place both regarded competitive types could become future team members Winning Toledo necessarily ultimate end rather good beginning Scale speed again letter George Wilson says ~Your comment assumption scale speed impossibility aroused pen good friend Milenko Mitrovich full scale aero nautical engineer par excellence finally made aware comparable performance tween real thing its scale cousin speed square root scale factor multi plied speed full-size plane example quarter scale scale ratio 025 square root 025 05 -size speed assumes weight power etc. follow proper scaling factors George also asks What happens stray physics build lighter-thanscale model requires less lift less speed what currently has curiosity compromise modeler would like visual similarity what happens other perfor mance characteristics Can compensated changing angular differences dihedral etc~ tried formula some existing scale models appeared work out approximately speed hoped attain example Pober Pixie I/S scale 02 ratio square root 02 0447 multiplied cruising speed 85 mph results easily attainable speed 38 mph approximately Pixies cruising speed half throttle Assuming its weight 1000 lbs divided 125 cube scale ratio s model 1/5 scale plane would need fly 17 mph true scale speed derived 85 divided 5 always thought should calculated Seventeen mph close dozens jobs better amazing Foredom Miniature Power Tools up benchS Variable speeds models Hundreds Cutters Powerful motor points abrasives Rugged flexible shaft special tools ENGRAVING MI ROUTINGERASING BUmSA craffsmen model makers hobbytata know Foredoms professional quality produces profegsional resulfa Light weight easy-to-hold handpieces Ideal fast super-precise drilling carving sanding grinding buffing dozens ofher operations wood metals plas tics ceramics minerals See dealer send now . Special offer machines handpieces speed confrols tools described FREE Catalog F le No 280A3 DOM B he C 06801 203-792-8622 August 1980 117 CLOCKWISE FROM TOP SPAD 3 KOMET MEISTER ELER STORCH OHIO SUPERSTAR MODEL PRODUCTS INC 5630 Cherokee Drive Canton Uti 441ZU HOBRYHTOEAWAYHOBBYHIT1EAWAYHO8BYHTOEAWAYHOBBYHIOEAWA FAMOUS BRITISH DIESELS MODELLER PLANS SPARES M/E PAw 0/C 2nd EDITION CATALOG-DIESEL HANDBOOK S 300 pp HOBBY HIDEWAYDELAVANIL 309 244-7389 61734 C HOBBYHIDEAWAYHOASYHIDEAWAYHOBBYHIDEAWAYIIOBBYHtDEAW stalling speed 8 lb plane calculated find speed quarter scale P-S Mustang prototype speed 300 mph found model should cruising 150 mph multiplying 300 05 square root 025 seems unreasonably fast 4-size P-SI have observed appear flying about half speed near 75 mph calculations small planes slow prototype speeds large planes reduced small model size seem align typical model speeds know Hot military racing planes large model sizes wouldnt have sufficient power reach speeds formula indicates should scale speed controversy con tinues Have opinion Lets hear light model can flown slower speeds heavier its top speed could faster because drag reduction Reducing angular difference between wing stabilizer would make easier control higher speeds use down trim transmitter would result tab effect would trim changes between high low speed flight Changing dihedral scale model has too great effect appearance would done scale modelers BoboodDolli Wischer Ri 1 S-221 Lapham PeaA Road Delafield WI 5308 CL Speed/Hempel continued page 46 plane sitting takeoff dolly Class job M&M team Cali fornia everybodys favorite husband wife speed team Fred Joyce Mar garido took 1st place Lincoln Nationals 17301 score smooth flying desing Detail powerplant rear intake ABC Rossi fuel supplied John Newton design suction tank sets cut down Tatone pan partially shrouded pipe set 11 length within John Newton eliminator-style glass fuselage uneven length wing panels 010 aluminum basswood spar inboard wing has exposed area 255 sq outboard 18 sq 118 bass wood tail has 20 sq Merced CA site first speed meet year March 16 Some records just laying open waiting grabbed because rule changes Scott Newkirk did 13788 F40 included two laps burning down result plug seal going pftouie No backup flight Will interesting see what new 40% nitro fuel rule will Frank Hunt recorded 18060 backup take Class B record new longer line So much wide open records FAI fliers put some fast times Doug Hinckley turning low 140s John Newton upper 140s Luthor Roy blew everyone away Luke upped record 16029 previous 159 flight backup alky boys appear getting consistency fuel regulator systems now seems lot fine tuning involved Look big speed racing two-day bash over Labor Day weekend Write Frank Hunt details 551 Brookdale Merced CA 95340 pan-holding fixture pictured handy tool quickly easily made Whether pan work press hand tools will make things little easier making pan easy handle Heres put together Cut out two pieces /4 thicker plywood four twelve Next both pieces atop other drill 7/32 hold corner Counter sink holes piece thread 2 x flathead machine screw holes other piece opened up 5/16 Cut window two top piece pictured Now assemble large washers under wingnuts pan can now sandwiched fixture scrap bass ply used under rear pan shim up top surfaces pan trued level wingnuts equally spaced top machine screws year beginning another rules cycle oh boy Let go record saying should just let rules alone go around exception would getting rid builder-of-the-model rule course adding 11 8 Model Aviation R E/XLISN1 SCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL SCALE PILOTS SCALE WHEELS CONTROL-LINECYLINDiRS ENGINE KITS MACHINE GUN KITS FREE-FLIGHT TIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 NEW ZLIN Z5OL AEROBATIC QUARTER SCALE MODEL ENGINE 90 WINGSPAN 80 CONSTRUCTION Foam Wing a Fuselage Tail WING AREA 1122 sq FLYING WEIGHT iOta 11 lbs FiberglasCowl 3/16 Aluminium Landing Gear RosiesD&R Power Pod Fits CDX T- D & Med 049 -051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon Injection mouldedColors Power 3 lb airplanes total weight 3A OL$595RED BLACK WEYELLOW ALSOORANGE MAIC E BANTAM ServosWrite D&RSticksForAFree ConnectorsCatalog Bulkhead SwitchFine Producta mounts TX Safety Switch gua ras avy duty gear Wovid wide uerebng forD 8 aai other fine producu 3501 -C W Moore St Santa Ana CA 927041
Edition: Model Aviation - 1980/08
Page Numbers: 32, 33, 114, 117, 118
SCALE Bob & Dolly Wischer TWENTY-sixth annual Toledo show annual pilgrimage Toledo always reinforces firm belief scale activity constantly increasing Display scale models manufacturers booths numerically equal shown competing modelers quality suffi Photo left F-i 04s cockpIt molded canopythey required hours detail Door lower right leads armament bay also detailed Photo right models main landing gear features retract cylinders handmade builder use 0 ring seals Forward gear doors close after gear extended Note rivet/fastener details skin custom wheels tires cient excellence make serious Flyline Models Brooke Model Products Model contenders entered compe- Merchants Dave & Als Scale Products tition seemed half commercial Bob Dively representative trend displays something related scale modeling Others such Robart new flat hinge either actual kits models items useful pockets gear struts lean heavily toward category Scale models displayed out- scale market Toledo has become scale numbered other class Commercial modelers world exhibitors specializing scale once rare have year depart Toledo firm become numerous Dave Platt Byron Originals impression have seen ultimate following years show could never surpass its quality year new models appear competitive displays superior anything shown previously leaving us wondering will end Improving perfection must have its limitations find ourselves nitpicking detect minor imperfections certain competition judges faced doing same order determine winners Glen nuno -,ish PZL-1 04 Wilga utility plane minimum balsa plywood used theall-metal model features embossed rnal ribbing its metal covering 16 lb model powered Webra gi Large cockpit has space beneath floor RC equipment Note neatly coiled receiver antenna dangling near landing gear photo right 32 Model Aviation Viewersadmire Jim Funduks Lockheed F-i 04 Starfighter Features 004 aluminum coveron balsa fuselage balsa wings K&B 75 cc engine custom ducted fan unit Toledo winners special breed airplanes Some built flown personal satisfaction see given awards Others pure glitter entered hope winning coveted trophies exposition shows flight minor consideration years number entries kept increasing due high quality models plus fact flight requirement now seems element self-limitation quantity modelers assume have no chance against museum-quality offerings Toledo First place Precision Scale well Best Show won Glen Bussmans PZL 104 Wilga Completely covered aluminum lithoplate sheet model truly spectacular Internally minimum shell structure balsa plywood support metal fuselage tail cone behind cabin area unsupported prototype Rivet de tail embossed aluminum exter nal reinforcing ribs tool formed Metal thickness 005 except tail surfaces 00 2 Built scale 245 foot 90-in span model has sufficiently large interior permit radio servo instal lation beneath cabin floor completely hidden view requirements Toledo complete radio installation Glen purposely permitted coiled antenna dangle fuselage bottom proof present spite large size metal structure complete model weighs modest 16 lbs should too great its Webra 91 engine wing loading 36 oz per sq ft Winner Non-Military Sport Scale Fairchild FC-2 George Clapp featured construction article April 1979 issue Model Aviation historical data three-view drawings month earlier George has finished model flat aluminum Mono Kote fact viewers unwilling believe flat finished material no longer available plane wins after having flown crashed repaired flown again real credit designer-builder Its refresh ing see planes fly well entered Toledo competitions First place Military Sport Scale went another familiar exhibitor Joe Spallone Continued page 114 pXECUTIVE N CORP AmItyvIll NY 11701 August 198033 Weathered worn finish Bill Mikesells Grumman F6F-5 Hellcat helped win 2nd place Precision Scale Toledo year Modeled Bob Holman plans 11/2 scale Merrit Zimmerman designed built deHavilland Moth plane also its 4-cylinder 4-cycle glow-ignition engine its 2 itt scale 10 lb model has 258 oz wing loading engine has displacement 111 cu weighs 30 oz develops g6 hp g500 rpm fuselage full cabin rb flight capability INDER 112 AG 60 EngInes lngspan X st per Ace RIC instructions 14 Electrical adjustments See Construction Manual 1234567 Master Throw adjustments match Master Centering transmitter system VARIANT Reversing SwitchXXX X Dual Rate SwitchXXX Plug-In BoardsXXX JumpersXXXX *6/7 Channel SwXXX ServoCentergAdj. X X X Servo RangeAdjXXXXHi/LuXX Trim Range Adj1112 D/R Servo Range333 Exponential Shape444 Numbers refer notes below following will added Stage 2 * Mixer ContrRngAdj\XXX X ABX Direct BXX *Mixer 2 Cont Rng AdjX X X AB XXXX DirectB X X X X Audio Timer 3 30 mm adjustable time Notes 1 Trim Range screwdriver adjustment Trim Adjust Board installed Trim Range fixed R9 Exponential Function Board used R9 can changed vary Trim Range 2 Trim Range channel 4 set plug-in resistor encoder board can changed suit preferences range adjustment approximately 0% 50% cases 3 The Dual Rate function applies both linear exponential control functions chan nels 1 2 3 Linear/Exponential Switch can also fitted desired 4 The exponential function can adjusted changing plug-in resistors R4 R5 Exponential Function Board 5 Not applicable switched functions Using Alright now its built what can adjusting Master Throw Master Centering controls can make transmitter control systems different Futaba Contest 7 7 channels 131 milliseconds neutral pulse Kraft Sport 4 channels 19 ms neutral Thats pretty wide range know works because Ive done Having made adjustments thereby convert uncomplicated system like Kraft Sport instance servo reversing dual rate exponential control adjustable trim range V-tail mixing host other refine ments OUR AIM KEEP SPORT FLYING THE F UN IN SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT Interprim PLANES 120 E Enlo Rd DOATS ps SOX m CARS TRAINS anWutt 04445301 4 Jo Quyb- 4419 2SS625 WE BUY OR TRADE OLD ENGINES AND KITS Before signing off really must thank Tim Peters Jennings KS suggestions have already included design will see Dave Chesney helpful suggestions encouragement Also Ed Farabaugh extensive list safety considerations expect will show up John Prestons column rest keep writing looking dont answer personally may find answered Thanks George M Myers 70 Froeblich Farm Road Hicks yule NY 11801 RC Scale/Wischers continued page 33 Corsair F4U- IA Except fiberglass fuse lage model covered iberglass cloth Super Coverite given base coat overall Hobbypoxy silver followed Aero Gloss dope Robart retract gear used obtain rotation legs Sonic Systems air actuators Joe also entered Mitsubishi KI-5 Sonia Precision Scale class model finished similar manner panel lines hand-drawn etched silver base No Toledo show would complete masterworks Jim Funduk crowd-pleasing plane year Lockheed F 04-G Starfigbter using 7 diameter custom ducted fan 75 cc K&B engine Built scale 1 model has span 38i length 96 Like P-38 Lightning last year fuselage covered 004 aluminum Handmade retracts have cylinders sealed 0 rings leaked hydraulic fluid realistically four-spar wing sheeted a Judging amount atten tion received F-104 favorite among viewers certainly talked-about plane display comments dealing 11-pound planes ability fly such tiny wing area Wing loading would range 50 60 oz per sq ft will need lot runway Previous efforts high wing loadings have indicated need runways 1000 114 Model Aviation last sentence tells read again PHOTOS BOOKLETSCOJNACCEIESThe thing now learn fly Special GY 014 X 60 solid lines $295 ppdHeliboy new box still using Custom needle valves racing wheelsmechanical mixers provided quick fills fuel shut-a Ifs 8 othersSchluter Id like tell went right out REPLA TECH detailed brochure send 25 cents toand flew like expert would lie INTERNATIONAKustom Kraflsmanship Box 2699 Laguna HillsThis transmitter feels different purpose CATALOGS $200U800 MC KENZU wvCalIf 92653 Ph f714 830-5162 V OA OREGON S4Umind put right back square consider dont like need buy another box repackage components Watch Stage 2 later column LETTERS TO HOT STUFFM ye built model planes past 42 years time adhesives available model builder have changed much its like difference between Wright brothers first flight Appollo moon shot started used some sort banana cement Since Ive probably used glue ever sold wasnt until discovered HOT STUFF really impressed first used novelty time passed became primary ad hesive Now models least 95% HOT STUFF Besides obvious advantages speed high strength Ive found cant beat HOT STUFF lightness 1/4 scale Spad would weigh 20 lbs stead 15 lbs werent HOT STUFF could go on short love HOT STUFFI Sincerely Frank J Forzettin EUJ LINEE ounce HOT STUFFTM ounce IT WASNT UNTIL TRIED HOT STUFF THAT WAS REALLY IMPRESSED GAP FILLING SUPER HOT STUFF 2 oz ALWAYS AT YOUR DEALERS THE WAY YOU WANT IT atee&e C& PO BOX 836 SIMI VALLEY CA 93065 E 805522-0062 ft long 100 ft wide visitor heard say would anxious try its first flight quite confident success Surprisingly its dazzling good looks glamor placed third Precision Scale As past Toledo shows always plane doesnt really stand Out upon closer scrutiny bit overwhelming year honor went Merrit Zimmerman deHavilland Gypsy Moth its clear-doped 60 span wings What made outstanding hand-made scale model operating Gypsy engine occupied its nose Plane engine completely scratch-built four stroke four cylinder glow engine has single ring aluminum pistons chromed steel cylinders 687 bore 75 stroke 111 cu displacement weighs 30 ounces develops 96 hp 12-8 prop 9500 rpm plane placed third Non Military Scale class another example welltried model flights before being brought Toledo Quarter Scale larger models plentiful Walt Mouchas half-size Fly Baby hung ceiling make room display tables did several others including i scale BuhI Bull Pup Hubert Lacey e Stinson SR-9F Fred Nielsen swarm ize Pitts Steen Skybolts Several years ago rirst met Steve Sauger Toledo displayed Stinson Station Wagon needed convinced should try win Nats also become memberofthe US team forworld championship competition Steve has since Sweden England team member year Toledo meet prospective Nats winners team members Joe Spallone mentioned earlier Bill Rafferty entered Focke WuIfTA-152 Precision Scale fourth place both regarded competitive types could become future team members Winning Toledo necessarily ultimate end rather good beginning Scale speed again letter George Wilson says ~Your comment assumption scale speed impossibility aroused pen good friend Milenko Mitrovich full scale aero nautical engineer par excellence finally made aware comparable performance tween real thing its scale cousin speed square root scale factor multi plied speed full-size plane example quarter scale scale ratio 025 square root 025 05 -size speed assumes weight power etc. follow proper scaling factors George also asks What happens stray physics build lighter-thanscale model requires less lift less speed what currently has curiosity compromise modeler would like visual similarity what happens other perfor mance characteristics Can compensated changing angular differences dihedral etc~ tried formula some existing scale models appeared work out approximately speed hoped attain example Pober Pixie I/S scale 02 ratio square root 02 0447 multiplied cruising speed 85 mph results easily attainable speed 38 mph approximately Pixies cruising speed half throttle Assuming its weight 1000 lbs divided 125 cube scale ratio s model 1/5 scale plane would need fly 17 mph true scale speed derived 85 divided 5 always thought should calculated Seventeen mph close dozens jobs better amazing Foredom Miniature Power Tools up benchS Variable speeds models Hundreds Cutters Powerful motor points abrasives Rugged flexible shaft special tools ENGRAVING MI ROUTINGERASING BUmSA craffsmen model makers hobbytata know Foredoms professional quality produces profegsional resulfa Light weight easy-to-hold handpieces Ideal fast super-precise drilling carving sanding grinding buffing dozens ofher operations wood metals plas tics ceramics minerals See dealer send now . Special offer machines handpieces speed confrols tools described FREE Catalog F le No 280A3 DOM B he C 06801 203-792-8622 August 1980 117 CLOCKWISE FROM TOP SPAD 3 KOMET MEISTER ELER STORCH OHIO SUPERSTAR MODEL PRODUCTS INC 5630 Cherokee Drive Canton Uti 441ZU HOBRYHTOEAWAYHOBBYHIT1EAWAYHO8BYHTOEAWAYHOBBYHIOEAWA FAMOUS BRITISH DIESELS MODELLER PLANS SPARES M/E PAw 0/C 2nd EDITION CATALOG-DIESEL HANDBOOK S 300 pp HOBBY HIDEWAYDELAVANIL 309 244-7389 61734 C HOBBYHIDEAWAYHOASYHIDEAWAYHOBBYHIDEAWAYIIOBBYHtDEAW stalling speed 8 lb plane calculated find speed quarter scale P-S Mustang prototype speed 300 mph found model should cruising 150 mph multiplying 300 05 square root 025 seems unreasonably fast 4-size P-SI have observed appear flying about half speed near 75 mph calculations small planes slow prototype speeds large planes reduced small model size seem align typical model speeds know Hot military racing planes large model sizes wouldnt have sufficient power reach speeds formula indicates should scale speed controversy con tinues Have opinion Lets hear light model can flown slower speeds heavier its top speed could faster because drag reduction Reducing angular difference between wing stabilizer would make easier control higher speeds use down trim transmitter would result tab effect would trim changes between high low speed flight Changing dihedral scale model has too great effect appearance would done scale modelers BoboodDolli Wischer Ri 1 S-221 Lapham PeaA Road Delafield WI 5308 CL Speed/Hempel continued page 46 plane sitting takeoff dolly Class job M&M team Cali fornia everybodys favorite husband wife speed team Fred Joyce Mar garido took 1st place Lincoln Nationals 17301 score smooth flying desing Detail powerplant rear intake ABC Rossi fuel supplied John Newton design suction tank sets cut down Tatone pan partially shrouded pipe set 11 length within John Newton eliminator-style glass fuselage uneven length wing panels 010 aluminum basswood spar inboard wing has exposed area 255 sq outboard 18 sq 118 bass wood tail has 20 sq Merced CA site first speed meet year March 16 Some records just laying open waiting grabbed because rule changes Scott Newkirk did 13788 F40 included two laps burning down result plug seal going pftouie No backup flight Will interesting see what new 40% nitro fuel rule will Frank Hunt recorded 18060 backup take Class B record new longer line So much wide open records FAI fliers put some fast times Doug Hinckley turning low 140s John Newton upper 140s Luthor Roy blew everyone away Luke upped record 16029 previous 159 flight backup alky boys appear getting consistency fuel regulator systems now seems lot fine tuning involved Look big speed racing two-day bash over Labor Day weekend Write Frank Hunt details 551 Brookdale Merced CA 95340 pan-holding fixture pictured handy tool quickly easily made Whether pan work press hand tools will make things little easier making pan easy handle Heres put together Cut out two pieces /4 thicker plywood four twelve Next both pieces atop other drill 7/32 hold corner Counter sink holes piece thread 2 x flathead machine screw holes other piece opened up 5/16 Cut window two top piece pictured Now assemble large washers under wingnuts pan can now sandwiched fixture scrap bass ply used under rear pan shim up top surfaces pan trued level wingnuts equally spaced top machine screws year beginning another rules cycle oh boy Let go record saying should just let rules alone go around exception would getting rid builder-of-the-model rule course adding 11 8 Model Aviation R E/XLISN1 SCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL SCALE PILOTS SCALE WHEELS CONTROL-LINECYLINDiRS ENGINE KITS MACHINE GUN KITS FREE-FLIGHT TIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 NEW ZLIN Z5OL AEROBATIC QUARTER SCALE MODEL ENGINE 90 WINGSPAN 80 CONSTRUCTION Foam Wing a Fuselage Tail WING AREA 1122 sq FLYING WEIGHT iOta 11 lbs FiberglasCowl 3/16 Aluminium Landing Gear RosiesD&R Power Pod Fits CDX T- D & Med 049 -051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon Injection mouldedColors Power 3 lb airplanes total weight 3A OL$595RED BLACK WEYELLOW ALSOORANGE MAIC E BANTAM ServosWrite D&RSticksForAFree ConnectorsCatalog Bulkhead SwitchFine Producta mounts TX Safety Switch gua ras avy duty gear Wovid wide uerebng forD 8 aai other fine producu 3501 -C W Moore St Santa Ana CA 927041