Radio Control Pylon Racing Bill Hager IM GETTING READY attend US FAI Pylon team-selection races Smyrna TN what Im hearing through grapevine should quite race will get full report next month across Big Pond comes Club 20 Racing event quite popular England unlike Quarter Midget bigger engines no landing gear Hand-launching means could fly almost anywhere have entry-level division using smaller en gines event sounds interesting will have winter some helpful hints Dave Shadel tips slanted Formula will also help other racing events matter sport flying Achieving maximum performance under varying weather conditions can both frustrat ing time-consuming dont know begin following has worked well past few years Formula can loosely applied event maxi mum performance desired hope can benefit following guidelines 1 Propeller Props running hot 9Q0 F above humid 70% higher condi tions should usually have less pitch thin blades prevent overheating load engine up too much prop running hot dry humidity 30% less air longer prop pitch thick airfoil section works well Reno Nats 1984 sealevel props worked increase pitch nearly inch blade thickness about 50% never did have good first-lap times managed get reasonable top end Flying elevation over 5000 feet something Im glad dont have very often 2 Engine am set fly air thats reasonably consistent contest conditions 7Oo9Oo 40%-70% humidity sea level flying Lake Charles would raise cylinder head 002-003 possibly drop nitro 55% load engine lightly normal setup ST X-40 engine has head 014 usually run 65% nitro dry conditions fuel mixtures can go 75%-plus nitro events fuel restricted playing head spacing props way increase performance Remember whatever experiments under take should written down will need good gauges air temperature humidity An airdensity meter really helps too Check local drag racers use set fuel injectors Also good depth micrometer measuring cylinder head clearance dial caliper measuring prop thickness would big helps preceding will get started After figure out equipment will amazed what can learn rewards takes time complain about cost Formula engines Dave Shadel just about winningest racer around won years AMA Nats F-l event engine over 114 runs Dave says wont race engine until gets about 30 runs maintains best way get 30 runs fly 30 times Think about guys Soap box time QSOO racing going strong everywhere Wellnot quite seems though Texas having problem matter looks like Southeast having problem too judging what read recent newsletter area Heres comment SEMPRA news letter rules too loose allowing variety engines reworked props tuned pipes on rules lack rules allow experienced flier great ad vantage new guy has enough trouble just flying does need tuned pipes cost new engine couple races has proven guys left Ohio area guys loosened up rules What happened Well event started fall off Texas allow tuned pipes ABC engines Well races some experi enced pilots just prove point came blew everyone away fast time 114 Well worked last race Dallas 11 12 people show up down 30-plus few years ago sort thing typical several areas around US Remember guys event beginner letting few hot dogs want go faster ruin event Hey guys yesyou shoe fits want go faster move Quarter Midget Formula Dont ruin Q500 event Speed costs money time Q500 needs stay economical event Back Ohio group went back basics event growing up Texas planning doing same thing am sure will help Keep simple will remain low-cost fun event Making flying easier year have run across some items should help us have fun less work time time will write something subject month have super flight box its shown photos made Custom Woodcraft #*Pine Shadows Rd McArthur CA 96056 flight box allows take Continued page 159 62 Model Aviation Racing alive well Long Island Long Island Flying Eagles 25 entries atthis 0500 race back October1985 Taken color printwe sure hope some blue airplanes show up b&w photo right Custom Woodcraft flight box puts everything right need gets off ground Theres information product column CmQ 1 Model Magic Epoxy Plus 8 mm 25% lighter Sands & carves like Basswood \ Non sagging gap filling super strength Use anywhere atwo part epoxy used 6f1 oz $895 retail equal 8 oz regular epoxy Model Magic Filler Balsa Foam & Fiberglasssands exactly like Balsa Super lightweight Superior adhesion Waterproof Nontoxic Use nicks gaps fillets fairings building up large areas8 tl oz $595 retail shrink turn brittle used gasoline diesel fuel offers clarity visual fuel flow Model Magic fuel tubing remains flexible plasticizer migration foul engines exhibits outstanding tear abrasion resistence Tubing tinted red easy identification gasoline & diesel use Available 5ff $249/pkg lOft $479/pkg SOft spools $2190 Blue Gb-Fuel Tubing Made finest silicone tubing available Less 1% swelling after 150 hours 15% nitro fuel Available 21/2 5ff packages SOft spools~ Cr2 Inc ARed Gas & Diesel Tubing Model Magic Gas & Diesel Fuel Tubing will swell fine products available dealer direct Magic Products PO Box 19784 _C~odel K_ St Paul MN 55119 715/425-1397 precisely custom tool attempt reassemble motor will hit windings word comes Mr Astro himself Bob Boucher can attest bit sage observa tion So eyeing up pin punch hammerdont Some new motors have also introduced Astro include quite small quite large cobalts end time-honored 02 035 ferrites have discontinued replaced cobalt versions impressive power-han dling ability new smaller cobalts really shortened versions 05 cobalt can mentally picture what look like offer now because writing Astro already backordered new products may till can see hands on~ other end size range Astro has 60- 100-size motors sort interest should get touch Astro particulars biggies may present special problems like bench-run motors cause Bob tells . blow everything 100-foot-long shop away Hes process constructing special duct work safely carry prop blast somewhere else new Old-Timer pictured two photos Its Leisures Lanzo Bomber general very nice kit good wood clean cutting However would suggest interested beginners consider possible alternative cause some aspects construction very difficult plans dont help much particular diamond-shaped fuselage pylon super challenge during assembly also during equipment installation inspired plane let suggest keep equipment far forward pos sible work extra hard keep aft end lightotherwise its tail-heavy city no wants add nose weight Electric built model recent SAM 76 OT meet Hatfield PA decided power system late constructionchoosing geared cobalt 15 ten 800 mAb cells 12 x 8 fixed-blade fan radio controls rudder elevator motor On/Off uses 250 mAh battery pack All-up weight 49 oz rules meet allowed 90-second motor run time included seven-minute max limit three flights So did fly maxed three times leaving six Playboys behind Im appreciativebut next OT will probably another Playboy Late news Polk County Soaring Eagles Lakeland FL have announced second Electric Fun-Fly December 7 1986 follows popular demand first meet July 13 informatiion please contact Leonard Postage 6103 Andrea Dr Lakeland FL 33803 has two phone numbers Well have presume work phone other home phone 813 644-1942 813 2933434 Lets snow under Florida Electric entries Now youre thoroughly confused please forward related other comments questions SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 know what primary concern Publisher Carl Wheeley dis cussed starting column couple years ago whether available Electric material would soon dry up wouldnt have enough write about RC Giant Scale/Beckman Continued page 61 builders arent particularly interested competi tion.I kind wonder wholl get hangar queen air first Once again thanks CoL John de Vries efforts month Bob Beckman intends back next month should continue send correspondence him address listed below Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 62 everything races box unfolds complete mini-shop can used hold plane its being assembled can also use waist-level place service plane between flights No working ground photo tells Heres contest report Rock Valley RC Fliers Rockford IL weather cooperating day first Q500 race 1986 approached raining off several days As time drew nearer Contest Director Orv Steinmetz spending lot time swering phone calls nervous fliers inquiring still going have contest voice full confidence positive thinking told CD really beginning doubt Sure well have Continued page 163 December1986 159 Building repairs snap Model Magic Realize Genuine Improvement RC Flying Geometron Transmitter Support Completely frees hands control sticks u Extremely comfortable use wear Put levers nothing way Allows concentrate ontake oft instant hat No belts flying because dont have hold transmitter whilebuckles straps no cord around neck operating controls Provides full four corner stickWearing support transmitter stays place mobilityyou carry plane Improves accuracy stick movement because Doubles ideal ground support offers perfect transmitter held stable accessibility keeps transmitter off ground Adjusts two-stick Tx modifications adapt- Ruggedly built heat treated aluminum finished able single stick Tx easy change support plate heavy duty anodize Assembled stainless Simple adjustments ann length shoulder size steel fasteners Deaigned constructed extended Transmitter secured safety catch can removed use 695O aced second yet cannot accidentally fall out PURCHASE ALL THREE ITEMS $995Q dealer order direct GEOMETRON CO INC 12 INGLESIDE ROAD LEXINGTON MA 02173 617 861-6526 SAVE $99Q PROVEN TO BE TREMENDOUS HELP FOR BOTH BEGINNERS AND EXPERTS! Plas $150 shipping COD 250 add5oshi cash stones order nero chatoes aoolo off Ia cononenha US Mass residena add 5% LCD TIMER/STOPWATCH Counts up down preset hold additive features Time out sounds alarm auto shut off Easy read outdoors lithium battery- 21 95* PROTECTIVE BAG Made spece age aluminum coated nylon Reflects suns heat protects Tx dirt dust special fast acting closure ONCE YOU USE IT YOU WILL NEVER FLY WITHOUT IT RC Pylon Racing/Hager Continued page 159 contest Sure weather will clear hope Well Mother Nature did cooperate cause rainy days field hadnt mowed grass reported Paul Zaleskas after extra trip field previous day least four inches long So after panic call Fay Harris quick mow job field good shape contest Thanks Fay time got field clouds disappeared just got course laid out some equipment place Fay came mowed grass good short Fifteen fliers hand start racing fourth heat first round yours truly mid-aired Jeff Faleo unfastened Jeffs right wing making somewhat difficult Jeff complete heat Sorry about No 1 though quite windy caused some real thrills everyone seemed have good time After dust settled engines ceased roaring ended follows 1 Bob Bently 2 Bob Loehner 3 Dan Kane 4 Dave Smith 5 Danny Kane Jr thanks club members nonmembers helped make contest success Thats month See races Bill Hager 706 Glen Haven Dr Conroe TX 77385 Structural Tests/Myers Continued page 65 Now does make sense design test around the 1035-lb figure should go 252 lb can limit maximum maneuvering lift limiting ele vator travel know Formula fliers Should go abrupt pullout terminal-velocity dive can estimate whole-body drag coefficient airplane knowing airplanes weight set weight equal drag find terminal velocity could 180 mph could produce maximum lift 363 lb figure out Down tail force point would about 55 lb de pending tail area tail moment arm airfoil etc Ask yourself Will air plane ever yanked about like will pilot smart enough ease out dive lower G Before answer let give another example Recently took over students 35-powered Cessna foamie up rather high engine quit put nose down gentle dive 200 300 nose down After plane traveled about 50 yd straight line saw wing tips yank up lots dihedral followed violent nose-up pitch airplane As speed built up adding down elevator keep path straight line Since wings held rubberbands seems likely wing lifted off fuselage precipitate pitch-up can see terminal velocity model both control- con figuration-dependent Now lets return question pilot continued feed more down elevator airplane would have pulled itself out dive much lower airspeed rubberbands NEW IMPROVED *flsr WUWIt Medd vim nuere weeli Pew. * WANDIT * USpoweNoDes * *Dealers moOed ______________________ * --- 5 * ImE1 *one eor warrarirhlCORD * *WetorDry *Stick Abrasives * * A Keen Machine gives esceptional 5 * sanding control eacellent tinish * *5955hasic mCi i hal Wand 1 each5 *vihgots5 *~555ffoilder Special vol 2 fiat 1 hair ivund wand 5 Oh 6 gvlS *1 29Deicce mncades 31101 2 hail roond5 *woods 1 hoff wands 10 itional Wands Abrasives available5 S * WANDIT MANUFACTURING 214 288-5789 * *PO Box 266 uite Texas 751495 stronger might have held dive higher velocity case some thing else would have happened possibly horizontal tail would have broken off bending downward Id inclined trust pilot par ticularly competent flight-test program planned future test pilot could carefully work up terminal velocity dive still concern about gusts plane might cross wake another racer traveling 150 mph could introduce sharp-edged vertical gust Tra ditionally gust velocity 40% forward velocity 04 x 150 ph would assuumed case would result instantaneous local velocity vector sum velocities 162 mph increase of2l80 angle attack airplane flying near 00 150 mph gust would increase angle attack beyond stall angle Therefore would expect see maxi mum lift due gusts 150 mph tells us should test 252-lb wing lift 38-lb down tail load Design loads problem see competent test engineer will look SiCil P5RPORM*5CR 0050 iou5tltieff CLlOEtt5 PROS REOEROCE Cash TWO ROLL SIZE Ponneess yOUR ceolcel iccosneanfo RoBRiCAnIOs *55 rLvisc ssneucTIOsS torn *OOivIOsOL POnOERnS $l 20 EOCS OR SIC PACE RiCE SO F7 5 RoouprBC54 Sirro December 1986 163
Edition: Model Aviation - 1986/12
Page Numbers: 62, 159, 163
Radio Control Pylon Racing Bill Hager IM GETTING READY attend US FAI Pylon team-selection races Smyrna TN what Im hearing through grapevine should quite race will get full report next month across Big Pond comes Club 20 Racing event quite popular England unlike Quarter Midget bigger engines no landing gear Hand-launching means could fly almost anywhere have entry-level division using smaller en gines event sounds interesting will have winter some helpful hints Dave Shadel tips slanted Formula will also help other racing events matter sport flying Achieving maximum performance under varying weather conditions can both frustrat ing time-consuming dont know begin following has worked well past few years Formula can loosely applied event maxi mum performance desired hope can benefit following guidelines 1 Propeller Props running hot 9Q0 F above humid 70% higher condi tions should usually have less pitch thin blades prevent overheating load engine up too much prop running hot dry humidity 30% less air longer prop pitch thick airfoil section works well Reno Nats 1984 sealevel props worked increase pitch nearly inch blade thickness about 50% never did have good first-lap times managed get reasonable top end Flying elevation over 5000 feet something Im glad dont have very often 2 Engine am set fly air thats reasonably consistent contest conditions 7Oo9Oo 40%-70% humidity sea level flying Lake Charles would raise cylinder head 002-003 possibly drop nitro 55% load engine lightly normal setup ST X-40 engine has head 014 usually run 65% nitro dry conditions fuel mixtures can go 75%-plus nitro events fuel restricted playing head spacing props way increase performance Remember whatever experiments under take should written down will need good gauges air temperature humidity An airdensity meter really helps too Check local drag racers use set fuel injectors Also good depth micrometer measuring cylinder head clearance dial caliper measuring prop thickness would big helps preceding will get started After figure out equipment will amazed what can learn rewards takes time complain about cost Formula engines Dave Shadel just about winningest racer around won years AMA Nats F-l event engine over 114 runs Dave says wont race engine until gets about 30 runs maintains best way get 30 runs fly 30 times Think about guys Soap box time QSOO racing going strong everywhere Wellnot quite seems though Texas having problem matter looks like Southeast having problem too judging what read recent newsletter area Heres comment SEMPRA news letter rules too loose allowing variety engines reworked props tuned pipes on rules lack rules allow experienced flier great ad vantage new guy has enough trouble just flying does need tuned pipes cost new engine couple races has proven guys left Ohio area guys loosened up rules What happened Well event started fall off Texas allow tuned pipes ABC engines Well races some experi enced pilots just prove point came blew everyone away fast time 114 Well worked last race Dallas 11 12 people show up down 30-plus few years ago sort thing typical several areas around US Remember guys event beginner letting few hot dogs want go faster ruin event Hey guys yesyou shoe fits want go faster move Quarter Midget Formula Dont ruin Q500 event Speed costs money time Q500 needs stay economical event Back Ohio group went back basics event growing up Texas planning doing same thing am sure will help Keep simple will remain low-cost fun event Making flying easier year have run across some items should help us have fun less work time time will write something subject month have super flight box its shown photos made Custom Woodcraft #*Pine Shadows Rd McArthur CA 96056 flight box allows take Continued page 159 62 Model Aviation Racing alive well Long Island Long Island Flying Eagles 25 entries atthis 0500 race back October1985 Taken color printwe sure hope some blue airplanes show up b&w photo right Custom Woodcraft flight box puts everything right need gets off ground Theres information product column CmQ 1 Model Magic Epoxy Plus 8 mm 25% lighter Sands & carves like Basswood \ Non sagging gap filling super strength Use anywhere atwo part epoxy used 6f1 oz $895 retail equal 8 oz regular epoxy Model Magic Filler Balsa Foam & Fiberglasssands exactly like Balsa Super lightweight Superior adhesion Waterproof Nontoxic Use nicks gaps fillets fairings building up large areas8 tl oz $595 retail shrink turn brittle used gasoline diesel fuel offers clarity visual fuel flow Model Magic fuel tubing remains flexible plasticizer migration foul engines exhibits outstanding tear abrasion resistence Tubing tinted red easy identification gasoline & diesel use Available 5ff $249/pkg lOft $479/pkg SOft spools $2190 Blue Gb-Fuel Tubing Made finest silicone tubing available Less 1% swelling after 150 hours 15% nitro fuel Available 21/2 5ff packages SOft spools~ Cr2 Inc ARed Gas & Diesel Tubing Model Magic Gas & Diesel Fuel Tubing will swell fine products available dealer direct Magic Products PO Box 19784 _C~odel K_ St Paul MN 55119 715/425-1397 precisely custom tool attempt reassemble motor will hit windings word comes Mr Astro himself Bob Boucher can attest bit sage observa tion So eyeing up pin punch hammerdont Some new motors have also introduced Astro include quite small quite large cobalts end time-honored 02 035 ferrites have discontinued replaced cobalt versions impressive power-han dling ability new smaller cobalts really shortened versions 05 cobalt can mentally picture what look like offer now because writing Astro already backordered new products may till can see hands on~ other end size range Astro has 60- 100-size motors sort interest should get touch Astro particulars biggies may present special problems like bench-run motors cause Bob tells . blow everything 100-foot-long shop away Hes process constructing special duct work safely carry prop blast somewhere else new Old-Timer pictured two photos Its Leisures Lanzo Bomber general very nice kit good wood clean cutting However would suggest interested beginners consider possible alternative cause some aspects construction very difficult plans dont help much particular diamond-shaped fuselage pylon super challenge during assembly also during equipment installation inspired plane let suggest keep equipment far forward pos sible work extra hard keep aft end lightotherwise its tail-heavy city no wants add nose weight Electric built model recent SAM 76 OT meet Hatfield PA decided power system late constructionchoosing geared cobalt 15 ten 800 mAb cells 12 x 8 fixed-blade fan radio controls rudder elevator motor On/Off uses 250 mAh battery pack All-up weight 49 oz rules meet allowed 90-second motor run time included seven-minute max limit three flights So did fly maxed three times leaving six Playboys behind Im appreciativebut next OT will probably another Playboy Late news Polk County Soaring Eagles Lakeland FL have announced second Electric Fun-Fly December 7 1986 follows popular demand first meet July 13 informatiion please contact Leonard Postage 6103 Andrea Dr Lakeland FL 33803 has two phone numbers Well have presume work phone other home phone 813 644-1942 813 2933434 Lets snow under Florida Electric entries Now youre thoroughly confused please forward related other comments questions SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 know what primary concern Publisher Carl Wheeley dis cussed starting column couple years ago whether available Electric material would soon dry up wouldnt have enough write about RC Giant Scale/Beckman Continued page 61 builders arent particularly interested competi tion.I kind wonder wholl get hangar queen air first Once again thanks CoL John de Vries efforts month Bob Beckman intends back next month should continue send correspondence him address listed below Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 62 everything races box unfolds complete mini-shop can used hold plane its being assembled can also use waist-level place service plane between flights No working ground photo tells Heres contest report Rock Valley RC Fliers Rockford IL weather cooperating day first Q500 race 1986 approached raining off several days As time drew nearer Contest Director Orv Steinmetz spending lot time swering phone calls nervous fliers inquiring still going have contest voice full confidence positive thinking told CD really beginning doubt Sure well have Continued page 163 December1986 159 Building repairs snap Model Magic Realize Genuine Improvement RC Flying Geometron Transmitter Support Completely frees hands control sticks u Extremely comfortable use wear Put levers nothing way Allows concentrate ontake oft instant hat No belts flying because dont have hold transmitter whilebuckles straps no cord around neck operating controls Provides full four corner stickWearing support transmitter stays place mobilityyou carry plane Improves accuracy stick movement because Doubles ideal ground support offers perfect transmitter held stable accessibility keeps transmitter off ground Adjusts two-stick Tx modifications adapt- Ruggedly built heat treated aluminum finished able single stick Tx easy change support plate heavy duty anodize Assembled stainless Simple adjustments ann length shoulder size steel fasteners Deaigned constructed extended Transmitter secured safety catch can removed use 695O aced second yet cannot accidentally fall out PURCHASE ALL THREE ITEMS $995Q dealer order direct GEOMETRON CO INC 12 INGLESIDE ROAD LEXINGTON MA 02173 617 861-6526 SAVE $99Q PROVEN TO BE TREMENDOUS HELP FOR BOTH BEGINNERS AND EXPERTS! Plas $150 shipping COD 250 add5oshi cash stones order nero chatoes aoolo off Ia cononenha US Mass residena add 5% LCD TIMER/STOPWATCH Counts up down preset hold additive features Time out sounds alarm auto shut off Easy read outdoors lithium battery- 21 95* PROTECTIVE BAG Made spece age aluminum coated nylon Reflects suns heat protects Tx dirt dust special fast acting closure ONCE YOU USE IT YOU WILL NEVER FLY WITHOUT IT RC Pylon Racing/Hager Continued page 159 contest Sure weather will clear hope Well Mother Nature did cooperate cause rainy days field hadnt mowed grass reported Paul Zaleskas after extra trip field previous day least four inches long So after panic call Fay Harris quick mow job field good shape contest Thanks Fay time got field clouds disappeared just got course laid out some equipment place Fay came mowed grass good short Fifteen fliers hand start racing fourth heat first round yours truly mid-aired Jeff Faleo unfastened Jeffs right wing making somewhat difficult Jeff complete heat Sorry about No 1 though quite windy caused some real thrills everyone seemed have good time After dust settled engines ceased roaring ended follows 1 Bob Bently 2 Bob Loehner 3 Dan Kane 4 Dave Smith 5 Danny Kane Jr thanks club members nonmembers helped make contest success Thats month See races Bill Hager 706 Glen Haven Dr Conroe TX 77385 Structural Tests/Myers Continued page 65 Now does make sense design test around the 1035-lb figure should go 252 lb can limit maximum maneuvering lift limiting ele vator travel know Formula fliers Should go abrupt pullout terminal-velocity dive can estimate whole-body drag coefficient airplane knowing airplanes weight set weight equal drag find terminal velocity could 180 mph could produce maximum lift 363 lb figure out Down tail force point would about 55 lb de pending tail area tail moment arm airfoil etc Ask yourself Will air plane ever yanked about like will pilot smart enough ease out dive lower G Before answer let give another example Recently took over students 35-powered Cessna foamie up rather high engine quit put nose down gentle dive 200 300 nose down After plane traveled about 50 yd straight line saw wing tips yank up lots dihedral followed violent nose-up pitch airplane As speed built up adding down elevator keep path straight line Since wings held rubberbands seems likely wing lifted off fuselage precipitate pitch-up can see terminal velocity model both control- con figuration-dependent Now lets return question pilot continued feed more down elevator airplane would have pulled itself out dive much lower airspeed rubberbands NEW IMPROVED *flsr WUWIt Medd vim nuere weeli Pew. * WANDIT * USpoweNoDes * *Dealers moOed ______________________ * --- 5 * ImE1 *one eor warrarirhlCORD * *WetorDry *Stick Abrasives * * A Keen Machine gives esceptional 5 * sanding control eacellent tinish * *5955hasic mCi i hal Wand 1 each5 *vihgots5 *~555ffoilder Special vol 2 fiat 1 hair ivund wand 5 Oh 6 gvlS *1 29Deicce mncades 31101 2 hail roond5 *woods 1 hoff wands 10 itional Wands Abrasives available5 S * WANDIT MANUFACTURING 214 288-5789 * *PO Box 266 uite Texas 751495 stronger might have held dive higher velocity case some thing else would have happened possibly horizontal tail would have broken off bending downward Id inclined trust pilot par ticularly competent flight-test program planned future test pilot could carefully work up terminal velocity dive still concern about gusts plane might cross wake another racer traveling 150 mph could introduce sharp-edged vertical gust Tra ditionally gust velocity 40% forward velocity 04 x 150 ph would assuumed case would result instantaneous local velocity vector sum velocities 162 mph increase of2l80 angle attack airplane flying near 00 150 mph gust would increase angle attack beyond stall angle Therefore would expect see maxi mum lift due gusts 150 mph tells us should test 252-lb wing lift 38-lb down tail load Design loads problem see competent test engineer will look SiCil P5RPORM*5CR 0050 iou5tltieff CLlOEtt5 PROS REOEROCE Cash TWO ROLL SIZE Ponneess yOUR ceolcel iccosneanfo RoBRiCAnIOs *55 rLvisc ssneucTIOsS torn *OOivIOsOL POnOERnS $l 20 EOCS OR SIC PACE RiCE SO F7 5 RoouprBC54 Sirro December 1986 163
Edition: Model Aviation - 1986/12
Page Numbers: 62, 159, 163
Radio Control Pylon Racing Bill Hager IM GETTING READY attend US FAI Pylon team-selection races Smyrna TN what Im hearing through grapevine should quite race will get full report next month across Big Pond comes Club 20 Racing event quite popular England unlike Quarter Midget bigger engines no landing gear Hand-launching means could fly almost anywhere have entry-level division using smaller en gines event sounds interesting will have winter some helpful hints Dave Shadel tips slanted Formula will also help other racing events matter sport flying Achieving maximum performance under varying weather conditions can both frustrat ing time-consuming dont know begin following has worked well past few years Formula can loosely applied event maxi mum performance desired hope can benefit following guidelines 1 Propeller Props running hot 9Q0 F above humid 70% higher condi tions should usually have less pitch thin blades prevent overheating load engine up too much prop running hot dry humidity 30% less air longer prop pitch thick airfoil section works well Reno Nats 1984 sealevel props worked increase pitch nearly inch blade thickness about 50% never did have good first-lap times managed get reasonable top end Flying elevation over 5000 feet something Im glad dont have very often 2 Engine am set fly air thats reasonably consistent contest conditions 7Oo9Oo 40%-70% humidity sea level flying Lake Charles would raise cylinder head 002-003 possibly drop nitro 55% load engine lightly normal setup ST X-40 engine has head 014 usually run 65% nitro dry conditions fuel mixtures can go 75%-plus nitro events fuel restricted playing head spacing props way increase performance Remember whatever experiments under take should written down will need good gauges air temperature humidity An airdensity meter really helps too Check local drag racers use set fuel injectors Also good depth micrometer measuring cylinder head clearance dial caliper measuring prop thickness would big helps preceding will get started After figure out equipment will amazed what can learn rewards takes time complain about cost Formula engines Dave Shadel just about winningest racer around won years AMA Nats F-l event engine over 114 runs Dave says wont race engine until gets about 30 runs maintains best way get 30 runs fly 30 times Think about guys Soap box time QSOO racing going strong everywhere Wellnot quite seems though Texas having problem matter looks like Southeast having problem too judging what read recent newsletter area Heres comment SEMPRA news letter rules too loose allowing variety engines reworked props tuned pipes on rules lack rules allow experienced flier great ad vantage new guy has enough trouble just flying does need tuned pipes cost new engine couple races has proven guys left Ohio area guys loosened up rules What happened Well event started fall off Texas allow tuned pipes ABC engines Well races some experi enced pilots just prove point came blew everyone away fast time 114 Well worked last race Dallas 11 12 people show up down 30-plus few years ago sort thing typical several areas around US Remember guys event beginner letting few hot dogs want go faster ruin event Hey guys yesyou shoe fits want go faster move Quarter Midget Formula Dont ruin Q500 event Speed costs money time Q500 needs stay economical event Back Ohio group went back basics event growing up Texas planning doing same thing am sure will help Keep simple will remain low-cost fun event Making flying easier year have run across some items should help us have fun less work time time will write something subject month have super flight box its shown photos made Custom Woodcraft #*Pine Shadows Rd McArthur CA 96056 flight box allows take Continued page 159 62 Model Aviation Racing alive well Long Island Long Island Flying Eagles 25 entries atthis 0500 race back October1985 Taken color printwe sure hope some blue airplanes show up b&w photo right Custom Woodcraft flight box puts everything right need gets off ground Theres information product column CmQ 1 Model Magic Epoxy Plus 8 mm 25% lighter Sands & carves like Basswood \ Non sagging gap filling super strength Use anywhere atwo part epoxy used 6f1 oz $895 retail equal 8 oz regular epoxy Model Magic Filler Balsa Foam & Fiberglasssands exactly like Balsa Super lightweight Superior adhesion Waterproof Nontoxic Use nicks gaps fillets fairings building up large areas8 tl oz $595 retail shrink turn brittle used gasoline diesel fuel offers clarity visual fuel flow Model Magic fuel tubing remains flexible plasticizer migration foul engines exhibits outstanding tear abrasion resistence Tubing tinted red easy identification gasoline & diesel use Available 5ff $249/pkg lOft $479/pkg SOft spools $2190 Blue Gb-Fuel Tubing Made finest silicone tubing available Less 1% swelling after 150 hours 15% nitro fuel Available 21/2 5ff packages SOft spools~ Cr2 Inc ARed Gas & Diesel Tubing Model Magic Gas & Diesel Fuel Tubing will swell fine products available dealer direct Magic Products PO Box 19784 _C~odel K_ St Paul MN 55119 715/425-1397 precisely custom tool attempt reassemble motor will hit windings word comes Mr Astro himself Bob Boucher can attest bit sage observa tion So eyeing up pin punch hammerdont Some new motors have also introduced Astro include quite small quite large cobalts end time-honored 02 035 ferrites have discontinued replaced cobalt versions impressive power-han dling ability new smaller cobalts really shortened versions 05 cobalt can mentally picture what look like offer now because writing Astro already backordered new products may till can see hands on~ other end size range Astro has 60- 100-size motors sort interest should get touch Astro particulars biggies may present special problems like bench-run motors cause Bob tells . blow everything 100-foot-long shop away Hes process constructing special duct work safely carry prop blast somewhere else new Old-Timer pictured two photos Its Leisures Lanzo Bomber general very nice kit good wood clean cutting However would suggest interested beginners consider possible alternative cause some aspects construction very difficult plans dont help much particular diamond-shaped fuselage pylon super challenge during assembly also during equipment installation inspired plane let suggest keep equipment far forward pos sible work extra hard keep aft end lightotherwise its tail-heavy city no wants add nose weight Electric built model recent SAM 76 OT meet Hatfield PA decided power system late constructionchoosing geared cobalt 15 ten 800 mAb cells 12 x 8 fixed-blade fan radio controls rudder elevator motor On/Off uses 250 mAh battery pack All-up weight 49 oz rules meet allowed 90-second motor run time included seven-minute max limit three flights So did fly maxed three times leaving six Playboys behind Im appreciativebut next OT will probably another Playboy Late news Polk County Soaring Eagles Lakeland FL have announced second Electric Fun-Fly December 7 1986 follows popular demand first meet July 13 informatiion please contact Leonard Postage 6103 Andrea Dr Lakeland FL 33803 has two phone numbers Well have presume work phone other home phone 813 644-1942 813 2933434 Lets snow under Florida Electric entries Now youre thoroughly confused please forward related other comments questions SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 know what primary concern Publisher Carl Wheeley dis cussed starting column couple years ago whether available Electric material would soon dry up wouldnt have enough write about RC Giant Scale/Beckman Continued page 61 builders arent particularly interested competi tion.I kind wonder wholl get hangar queen air first Once again thanks CoL John de Vries efforts month Bob Beckman intends back next month should continue send correspondence him address listed below Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 62 everything races box unfolds complete mini-shop can used hold plane its being assembled can also use waist-level place service plane between flights No working ground photo tells Heres contest report Rock Valley RC Fliers Rockford IL weather cooperating day first Q500 race 1986 approached raining off several days As time drew nearer Contest Director Orv Steinmetz spending lot time swering phone calls nervous fliers inquiring still going have contest voice full confidence positive thinking told CD really beginning doubt Sure well have Continued page 163 December1986 159 Building repairs snap Model Magic Realize Genuine Improvement RC Flying Geometron Transmitter Support Completely frees hands control sticks u Extremely comfortable use wear Put levers nothing way Allows concentrate ontake oft instant hat No belts flying because dont have hold transmitter whilebuckles straps no cord around neck operating controls Provides full four corner stickWearing support transmitter stays place mobilityyou carry plane Improves accuracy stick movement because Doubles ideal ground support offers perfect transmitter held stable accessibility keeps transmitter off ground Adjusts two-stick Tx modifications adapt- Ruggedly built heat treated aluminum finished able single stick Tx easy change support plate heavy duty anodize Assembled stainless Simple adjustments ann length shoulder size steel fasteners Deaigned constructed extended Transmitter secured safety catch can removed use 695O aced second yet cannot accidentally fall out PURCHASE ALL THREE ITEMS $995Q dealer order direct GEOMETRON CO INC 12 INGLESIDE ROAD LEXINGTON MA 02173 617 861-6526 SAVE $99Q PROVEN TO BE TREMENDOUS HELP FOR BOTH BEGINNERS AND EXPERTS! Plas $150 shipping COD 250 add5oshi cash stones order nero chatoes aoolo off Ia cononenha US Mass residena add 5% LCD TIMER/STOPWATCH Counts up down preset hold additive features Time out sounds alarm auto shut off Easy read outdoors lithium battery- 21 95* PROTECTIVE BAG Made spece age aluminum coated nylon Reflects suns heat protects Tx dirt dust special fast acting closure ONCE YOU USE IT YOU WILL NEVER FLY WITHOUT IT RC Pylon Racing/Hager Continued page 159 contest Sure weather will clear hope Well Mother Nature did cooperate cause rainy days field hadnt mowed grass reported Paul Zaleskas after extra trip field previous day least four inches long So after panic call Fay Harris quick mow job field good shape contest Thanks Fay time got field clouds disappeared just got course laid out some equipment place Fay came mowed grass good short Fifteen fliers hand start racing fourth heat first round yours truly mid-aired Jeff Faleo unfastened Jeffs right wing making somewhat difficult Jeff complete heat Sorry about No 1 though quite windy caused some real thrills everyone seemed have good time After dust settled engines ceased roaring ended follows 1 Bob Bently 2 Bob Loehner 3 Dan Kane 4 Dave Smith 5 Danny Kane Jr thanks club members nonmembers helped make contest success Thats month See races Bill Hager 706 Glen Haven Dr Conroe TX 77385 Structural Tests/Myers Continued page 65 Now does make sense design test around the 1035-lb figure should go 252 lb can limit maximum maneuvering lift limiting ele vator travel know Formula fliers Should go abrupt pullout terminal-velocity dive can estimate whole-body drag coefficient airplane knowing airplanes weight set weight equal drag find terminal velocity could 180 mph could produce maximum lift 363 lb figure out Down tail force point would about 55 lb de pending tail area tail moment arm airfoil etc Ask yourself Will air plane ever yanked about like will pilot smart enough ease out dive lower G Before answer let give another example Recently took over students 35-powered Cessna foamie up rather high engine quit put nose down gentle dive 200 300 nose down After plane traveled about 50 yd straight line saw wing tips yank up lots dihedral followed violent nose-up pitch airplane As speed built up adding down elevator keep path straight line Since wings held rubberbands seems likely wing lifted off fuselage precipitate pitch-up can see terminal velocity model both control- con figuration-dependent Now lets return question pilot continued feed more down elevator airplane would have pulled itself out dive much lower airspeed rubberbands NEW IMPROVED *flsr WUWIt Medd vim nuere weeli Pew. * WANDIT * USpoweNoDes * *Dealers moOed ______________________ * --- 5 * ImE1 *one eor warrarirhlCORD * *WetorDry *Stick Abrasives * * A Keen Machine gives esceptional 5 * sanding control eacellent tinish * *5955hasic mCi i hal Wand 1 each5 *vihgots5 *~555ffoilder Special vol 2 fiat 1 hair ivund wand 5 Oh 6 gvlS *1 29Deicce mncades 31101 2 hail roond5 *woods 1 hoff wands 10 itional Wands Abrasives available5 S * WANDIT MANUFACTURING 214 288-5789 * *PO Box 266 uite Texas 751495 stronger might have held dive higher velocity case some thing else would have happened possibly horizontal tail would have broken off bending downward Id inclined trust pilot par ticularly competent flight-test program planned future test pilot could carefully work up terminal velocity dive still concern about gusts plane might cross wake another racer traveling 150 mph could introduce sharp-edged vertical gust Tra ditionally gust velocity 40% forward velocity 04 x 150 ph would assuumed case would result instantaneous local velocity vector sum velocities 162 mph increase of2l80 angle attack airplane flying near 00 150 mph gust would increase angle attack beyond stall angle Therefore would expect see maxi mum lift due gusts 150 mph tells us should test 252-lb wing lift 38-lb down tail load Design loads problem see competent test engineer will look SiCil P5RPORM*5CR 0050 iou5tltieff CLlOEtt5 PROS REOEROCE Cash TWO ROLL SIZE Ponneess yOUR ceolcel iccosneanfo RoBRiCAnIOs *55 rLvisc ssneucTIOsS torn *OOivIOsOL POnOERnS $l 20 EOCS OR SIC PACE RiCE SO F7 5 RoouprBC54 Sirro December 1986 163