FREE FLIGHT INDOOR U 1m NOTE Last year some experimental Easy B models using wood bracing fuselage flown contests Pending formal clarification Indoor Contest Board aware Easy B wings may have form bracing bracing must wood according limited informal poll ICB members Change Address previous column listed two E-mail addresses Both have replaced rten@intexnet likely FF Indoor club has least member has E-mail address Can form quick-response network Drop E-mail sign up Also have anything column E-mail much easier unless have send drawings photos Biiig Schedule Gary Underwood proposal move activities yearly format unanimously accepted approval will yield us 110 flying dates Hangar 1 will begin activities January 6 end December 29 1996 visited Hangar 1 just prior Christmas several improvements taking place renovation northern wall now airtight doors cement blocks position providing new classrooms Navy should greatly reduce drift side side sliding truck door entrance temporarily sealed asbestos removal southern wall area will improved 1996 conjunction Votech School truck door impassable Navy utilizing another truck door northeastern portion hangar Tenny comment Gee whiz wish Lakehurst backyard Steering Poles Dedicated Cat fliers own steering poles original rules limited steering-pole length two meters minimum eight meters maximum recent ruling removed limits Richard Doig suggests toothpick now legal steering years fliers have used collapsible telescoping poles made fiberglass poles called crappie poles available bait-andtackle shops Most such poles extend least 20 feet require considerable skill practice Part problem two smallest-diameter sections limber enough start whipping around dont move very carefully Modern technology Kevlar now being used build smaller-diameter lighter poles much stiffer fiberglass poles Poles have another down side flat ceilings model close ceiling very easy jam pole tip ceiling disrupts aim timing sometimes model Pole Modifications Aluminum tubing inserted bottom section extends pole length example four feet equal former maximum allowable length 2 Precision aluminum tubing replaces flexible upper end Balloons Any balloon useful accurate steering high altitude large enough lift large fishing reel mounted short pole four six feet plus some additional weight much lift needed make balloon track movements quickly move bottom end four feet balloon must take longer about five seconds catch up soft lowerlift balloon can used intercept drifting model snag model bring down wont foul another flight will useful safely move models orbit prevent drifting obstacles above perhaps 50 feet Choice Balloon lift pure helium fixed quantity based solely volume gas enclosed balloon weight balloon filler spouts steering line subtract total helium lift Rubber balloons lose about 50% lift eight hours inflated volume needs enough retain steering capability end contest Lets put balloon size perspective lift varies cube radius lift 24-inch balloon eight times great 12-inch balloon Cat steering much different highceiling steering Any balloon small enough useful steering model near ceiling has little lift has no maneuverability balloon has enough lift useful useful tactic place balloon either prop wingtip hits balloon model doesnt stall drop too low can snag model string move new orbit experimented party balloons found 11-inch package rating party balloon will give adequate steering Cat least four hours Bedford TX site has quonset-type curved ceiling able catch model center building below peak move orbit needed Anti-Foaling Tubing rules mandate model steered zzzJ 114 Model Aviation s Jim Clems high-flare Pennyplane prop Parallel carbon-fiber strips flex under load Tenny photo low ceiling EIZf high ceiling IiJ9r Rubber got creeps Sketches tail hooks lock 0-rings place see text Tenny sketch lock front 0-rings place see text Balsa wedges 0-ring against hook rubber against 0-ring Tenny sketch a-ring motor hook wedge front ahead wing easy get string tangled prop high-ceiling fliers use inflatable plastic tube attached balloon steering line attaches lower end tubing leaving about 10 15 feet tubing used contact model Gary Underwood few others substitute flat plastic ribbon inflated tubing Either tubing ribbon prevents prop grabbing string model can released want release Flying Opportunities sessions listed below latest information available CDs events beginning June 1996 send schedules ASAP listings below include dates available time writing listing events regular schedule see January column Always verify contest date phone before leaving home CaliforniaSan Francisco area Indoor flying Mt Pleasant HS Gym corner White Ocala Roads As always dates confirmed subject possible change due circumstances yet unforeseen sessions run 9 am 1 pm Apr 13 May 18 1996 Get 9 am wish park near gym Otherwise park front along White Road entry gate will closed Contact Sherman Gillespie 6248 Bauer Ln San Jose CA 95135 Tel 408 2382981 CanadaOntario area Indoor flying Woodroffe Hugh School Ottawa Mondays 7 pm 10 pm 1995-96 season Apr 15 Apr 22 Apr29 May 6 May 13 May 27 1996 Contact Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 ConnecticutNorwich Indoor session scheduled Teachers Memorial Junior High School Norwich 9 am 2 pm April 13 1996 Contact John Koptonak 3 Wiemes Ct Waterford CT 06385 Tel 203 442-9903 FloridaMIAMA #6 April 20-21 1996 MacDill AFB #7 set May 18-19 1996 request contest dates has made Contact Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 contest details new dates OklahomaOklahoma City 1996 season finale contest Armory April 21 1996 Contact Edsel Ford 10613 W Country Drive Oklahoma City OK 73170 Tel 405 691-5411 OregonAlbany WMC Indoor schedule wraps up Cat II two-day meet Apr 27-28 South Albany High School has two flyable gyms 42foot Cat II 22-foot Cat contest begins noon Saturday goes until around 10 pm time off dinner symposium second day begins 830 am ends 3 pm Token awards given enter fly Entry fees begin $3 top out $6 per entrant Contact Bob Stalick 5066 NW Picadilly Cir Albany OR 97321 Tel 503 928-8101 additional details New JerseyLakehurst vastly expanded schedule 110 flying dates has arranged Gary Kit Underwood details Gary Underwood 24 Kennebee Ct Bordentown NJ 08505 Tel 609 3249004 fax 609 324-9005 E-mail 703141207 @compuservecOm VirginiaHampton area Langley Brainbusters winter Indoor contest schedule includes tentative dates 21 Apr 5 May 1996 1 pm 6 pm test flying beginning 11 am contests will held SBH Gym will feature following events EZ-13 Limited Pennyplane Bostonian No Cal A-6 8-inch handlaunch glider MiniStick events count scoring Contact Abram Van Dover 112 Tillerson Dr Newport News VA 23602 Tel 804 877-2830 WisconsinMilwaukee Bong Eagles have scheduled flying sessions Hamilton High School Auditorium 6214 W Warnimont Ave Milwaukee 7 pm 930 pm May 2 1996 information contact Joe Adams Box 391 Oak Creek WI 53154 Tel 414 762-3492 414 762-0010 Reading Plaas Jim Clem avidly collects plans kinds models studies great detail record models particularly classes flies notes rubber weight loop length launch turns record flight whenever data available turns charts rubber can estimate hard motor pushed loop length weight infers average strip width launch turns flight time postulates average rpm 20% 10% turns left process primes pump Jims first guess motor size new model Glide Testing Ive watched Jim Clem others test-glide Indoor models such Pennyplane FiD could never see point After prop free-wheeling no motor CG isnt likely right place Jim helped understand useful information gained glide-testing Once model has trimmed flight usual manner glide-testing motor removed lets him develop feel models performance mode later flying sessions Jim assembles model does normal preflight inspections Just before winding motor glide test last step sometimes reveals needed repair cracked rib loose bracing wire anything didnt show up static inspection may magnified flight loads trim test preflight Creepy Rubber Most model trimming can done low-ceiling sites can make kinds test flights use quartermotors predict full-motor altitude time determine level flight torqueall kinds neat things What cant easily deal rubber-creep problems Competitive Cat flying requires shorter rubber motors larger crosssection relatively lower launch torque avoid grinding model down ceiling-scrubbing move high ceilings longer loop needed hold enough turns Pennyplanes Bostonian models begins creep crawl Bostonian motors bunch up near nose tail upsetting trim lot clearance between motor stick Pennyplanes motor curls around prop shaft jamming prop works around rear hook jams against stick knots cant unwind land lots turns instead lots time have fighting problem Pennyplanes years As remember didnt have problems before 0-rings Figures 2 3 show what came together 95 Kibbie Dome session basic rear hook now use models locks rear 0-ring place works well up about 19-inch loops Pennyplane needed longer loops problem returned second sketch shows what did next ran insect-mounting pin through motorstick did one-turn wrap around hook absolutely stopped longer loop oozing around right side hook other end Figure 3 shows cross-section through prop hook After winding small piece balsa forced through 0-ring wedge 0-ring against hook rubber against 0-ring Problem solved easiest way Ive found insert wedge precut piece medium balsa length toothpick sharpened easy insertion After insertion clip both ends fingernail clippers seemed eliminate front hook jam several full-bore flights May1996 115 invited Ihe Home Jolly Rogers Free admission public Great Raffle RV site no hook-up HOSTED BY TIDEWATER RADIO CONTROL INC AMA Required ow hand TX & RX 1991 Approved ALL TURBINES MUST HAVE AMA WAIVER TO FLT RE UP LANDING FEE $1006 Contest Director Frank Rega 804 479-4905 WE HAVE OVER 26 YEARS EXPERIENCE IN RC AT WE 1466 windward dr mason ohio 45040 ph 513 398-5423 116 Model Aviation Bat Sheet Gene Stubbs Editor Need music wire sizes smaller generally available Musicmakers Kits Inc will sell quantity large small ten sizes 009 dia 026 dia 15 cents per ft $15 200-foot hank want take time out model building also offer kits interesting variety musical instruments Send $2 catalog Box 2117 Stillwater MN 55082 dust-control measure thats easy effective set up air filter simply draping piece fiberglass garden cloth over window fan intake side place fan bench front work area turn low speed Airborne dust particles drift toward fan get filtered out cloth clean filter just take cloth outdoors once shake out Another technique always use glider building rough shaping sharp block plane Maybe everyone does way Its fast well dust-free start build glider spend first evening just sharpening plane use fine diamond stone finish stropping crocus cloth Question Bob Eberle Did ever notice standard prop-pitch gauge accurate symmetrical prop blades use common protractor-type gauge certain radius center spar can measure pitch using chart formula P what have forward reverse flare blade point will throw gauge reading offpossibly lot about using prop-forming block gauge setup tool An Answer Bob Meuser make accurate measurement pitch gauge have measured actual pitch prop High-Flare Prop reason Indoor times have soared classes now use variable-pitch variable-diameter props drastically reduce models critical torque value torque level too low hold model cruise An alternative create props flare lot photo shows Jim Clems experiments drive section hub consists two parallel strips 007-inch carbon-fiber sheet flex under load Flexing can varied sanding width carbon fiber using narrower strips increase flare extending length center block reduce flare BJrn/c ELECTRONICS V RX WV0S etc FOR OLDER RADIO UPDATES GIoF8Cog Fo, FlyingSo,AI,,LoflCIeoConopyAoIobI BiIdor Ki 52S5 Sh.ed Ki $365 D1e Sheed Ki S495~ ULTIMATESPORT RC 255 Eot AhIond/PO Bo, 727/Sod, Sprog, ldo1, 83276 ULTKKATI W300 EPE1-208-547-3742FoF~heI,f,S,dSAsE JT LAThES ING MACHINES 304 562-3538 LATHES STARTING $194000 FREE CATALOG
Edition: Model Aviation - 1996/05
Page Numbers: 114, 115, 116
Edition: Model Aviation - 1996/05
Page Numbers: 114, 115, 116
FREE FLIGHT INDOOR U 1m NOTE Last year some experimental Easy B models using wood bracing fuselage flown contests Pending formal clarification Indoor Contest Board aware Easy B wings may have form bracing bracing must wood according limited informal poll ICB members Change Address previous column listed two E-mail addresses Both have replaced rten@intexnet likely FF Indoor club has least member has E-mail address Can form quick-response network Drop E-mail sign up Also have anything column E-mail much easier unless have send drawings photos Biiig Schedule Gary Underwood proposal move activities yearly format unanimously accepted approval will yield us 110 flying dates Hangar 1 will begin activities January 6 end December 29 1996 visited Hangar 1 just prior Christmas several improvements taking place renovation northern wall now airtight doors cement blocks position providing new classrooms Navy should greatly reduce drift side side sliding truck door entrance temporarily sealed asbestos removal southern wall area will improved 1996 conjunction Votech School truck door impassable Navy utilizing another truck door northeastern portion hangar Tenny comment Gee whiz wish Lakehurst backyard Steering Poles Dedicated Cat fliers own steering poles original rules limited steering-pole length two meters minimum eight meters maximum recent ruling removed limits Richard Doig suggests toothpick now legal steering years fliers have used collapsible telescoping poles made fiberglass poles called crappie poles available bait-andtackle shops Most such poles extend least 20 feet require considerable skill practice Part problem two smallest-diameter sections limber enough start whipping around dont move very carefully Modern technology Kevlar now being used build smaller-diameter lighter poles much stiffer fiberglass poles Poles have another down side flat ceilings model close ceiling very easy jam pole tip ceiling disrupts aim timing sometimes model Pole Modifications Aluminum tubing inserted bottom section extends pole length example four feet equal former maximum allowable length 2 Precision aluminum tubing replaces flexible upper end Balloons Any balloon useful accurate steering high altitude large enough lift large fishing reel mounted short pole four six feet plus some additional weight much lift needed make balloon track movements quickly move bottom end four feet balloon must take longer about five seconds catch up soft lowerlift balloon can used intercept drifting model snag model bring down wont foul another flight will useful safely move models orbit prevent drifting obstacles above perhaps 50 feet Choice Balloon lift pure helium fixed quantity based solely volume gas enclosed balloon weight balloon filler spouts steering line subtract total helium lift Rubber balloons lose about 50% lift eight hours inflated volume needs enough retain steering capability end contest Lets put balloon size perspective lift varies cube radius lift 24-inch balloon eight times great 12-inch balloon Cat steering much different highceiling steering Any balloon small enough useful steering model near ceiling has little lift has no maneuverability balloon has enough lift useful useful tactic place balloon either prop wingtip hits balloon model doesnt stall drop too low can snag model string move new orbit experimented party balloons found 11-inch package rating party balloon will give adequate steering Cat least four hours Bedford TX site has quonset-type curved ceiling able catch model center building below peak move orbit needed Anti-Foaling Tubing rules mandate model steered zzzJ 114 Model Aviation s Jim Clems high-flare Pennyplane prop Parallel carbon-fiber strips flex under load Tenny photo low ceiling EIZf high ceiling IiJ9r Rubber got creeps Sketches tail hooks lock 0-rings place see text Tenny sketch lock front 0-rings place see text Balsa wedges 0-ring against hook rubber against 0-ring Tenny sketch a-ring motor hook wedge front ahead wing easy get string tangled prop high-ceiling fliers use inflatable plastic tube attached balloon steering line attaches lower end tubing leaving about 10 15 feet tubing used contact model Gary Underwood few others substitute flat plastic ribbon inflated tubing Either tubing ribbon prevents prop grabbing string model can released want release Flying Opportunities sessions listed below latest information available CDs events beginning June 1996 send schedules ASAP listings below include dates available time writing listing events regular schedule see January column Always verify contest date phone before leaving home CaliforniaSan Francisco area Indoor flying Mt Pleasant HS Gym corner White Ocala Roads As always dates confirmed subject possible change due circumstances yet unforeseen sessions run 9 am 1 pm Apr 13 May 18 1996 Get 9 am wish park near gym Otherwise park front along White Road entry gate will closed Contact Sherman Gillespie 6248 Bauer Ln San Jose CA 95135 Tel 408 2382981 CanadaOntario area Indoor flying Woodroffe Hugh School Ottawa Mondays 7 pm 10 pm 1995-96 season Apr 15 Apr 22 Apr29 May 6 May 13 May 27 1996 Contact Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 ConnecticutNorwich Indoor session scheduled Teachers Memorial Junior High School Norwich 9 am 2 pm April 13 1996 Contact John Koptonak 3 Wiemes Ct Waterford CT 06385 Tel 203 442-9903 FloridaMIAMA #6 April 20-21 1996 MacDill AFB #7 set May 18-19 1996 request contest dates has made Contact Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 contest details new dates OklahomaOklahoma City 1996 season finale contest Armory April 21 1996 Contact Edsel Ford 10613 W Country Drive Oklahoma City OK 73170 Tel 405 691-5411 OregonAlbany WMC Indoor schedule wraps up Cat II two-day meet Apr 27-28 South Albany High School has two flyable gyms 42foot Cat II 22-foot Cat contest begins noon Saturday goes until around 10 pm time off dinner symposium second day begins 830 am ends 3 pm Token awards given enter fly Entry fees begin $3 top out $6 per entrant Contact Bob Stalick 5066 NW Picadilly Cir Albany OR 97321 Tel 503 928-8101 additional details New JerseyLakehurst vastly expanded schedule 110 flying dates has arranged Gary Kit Underwood details Gary Underwood 24 Kennebee Ct Bordentown NJ 08505 Tel 609 3249004 fax 609 324-9005 E-mail 703141207 @compuservecOm VirginiaHampton area Langley Brainbusters winter Indoor contest schedule includes tentative dates 21 Apr 5 May 1996 1 pm 6 pm test flying beginning 11 am contests will held SBH Gym will feature following events EZ-13 Limited Pennyplane Bostonian No Cal A-6 8-inch handlaunch glider MiniStick events count scoring Contact Abram Van Dover 112 Tillerson Dr Newport News VA 23602 Tel 804 877-2830 WisconsinMilwaukee Bong Eagles have scheduled flying sessions Hamilton High School Auditorium 6214 W Warnimont Ave Milwaukee 7 pm 930 pm May 2 1996 information contact Joe Adams Box 391 Oak Creek WI 53154 Tel 414 762-3492 414 762-0010 Reading Plaas Jim Clem avidly collects plans kinds models studies great detail record models particularly classes flies notes rubber weight loop length launch turns record flight whenever data available turns charts rubber can estimate hard motor pushed loop length weight infers average strip width launch turns flight time postulates average rpm 20% 10% turns left process primes pump Jims first guess motor size new model Glide Testing Ive watched Jim Clem others test-glide Indoor models such Pennyplane FiD could never see point After prop free-wheeling no motor CG isnt likely right place Jim helped understand useful information gained glide-testing Once model has trimmed flight usual manner glide-testing motor removed lets him develop feel models performance mode later flying sessions Jim assembles model does normal preflight inspections Just before winding motor glide test last step sometimes reveals needed repair cracked rib loose bracing wire anything didnt show up static inspection may magnified flight loads trim test preflight Creepy Rubber Most model trimming can done low-ceiling sites can make kinds test flights use quartermotors predict full-motor altitude time determine level flight torqueall kinds neat things What cant easily deal rubber-creep problems Competitive Cat flying requires shorter rubber motors larger crosssection relatively lower launch torque avoid grinding model down ceiling-scrubbing move high ceilings longer loop needed hold enough turns Pennyplanes Bostonian models begins creep crawl Bostonian motors bunch up near nose tail upsetting trim lot clearance between motor stick Pennyplanes motor curls around prop shaft jamming prop works around rear hook jams against stick knots cant unwind land lots turns instead lots time have fighting problem Pennyplanes years As remember didnt have problems before 0-rings Figures 2 3 show what came together 95 Kibbie Dome session basic rear hook now use models locks rear 0-ring place works well up about 19-inch loops Pennyplane needed longer loops problem returned second sketch shows what did next ran insect-mounting pin through motorstick did one-turn wrap around hook absolutely stopped longer loop oozing around right side hook other end Figure 3 shows cross-section through prop hook After winding small piece balsa forced through 0-ring wedge 0-ring against hook rubber against 0-ring Problem solved easiest way Ive found insert wedge precut piece medium balsa length toothpick sharpened easy insertion After insertion clip both ends fingernail clippers seemed eliminate front hook jam several full-bore flights May1996 115 invited Ihe Home Jolly Rogers Free admission public Great Raffle RV site no hook-up HOSTED BY TIDEWATER RADIO CONTROL INC AMA Required ow hand TX & RX 1991 Approved ALL TURBINES MUST HAVE AMA WAIVER TO FLT RE UP LANDING FEE $1006 Contest Director Frank Rega 804 479-4905 WE HAVE OVER 26 YEARS EXPERIENCE IN RC AT WE 1466 windward dr mason ohio 45040 ph 513 398-5423 116 Model Aviation Bat Sheet Gene Stubbs Editor Need music wire sizes smaller generally available Musicmakers Kits Inc will sell quantity large small ten sizes 009 dia 026 dia 15 cents per ft $15 200-foot hank want take time out model building also offer kits interesting variety musical instruments Send $2 catalog Box 2117 Stillwater MN 55082 dust-control measure thats easy effective set up air filter simply draping piece fiberglass garden cloth over window fan intake side place fan bench front work area turn low speed Airborne dust particles drift toward fan get filtered out cloth clean filter just take cloth outdoors once shake out Another technique always use glider building rough shaping sharp block plane Maybe everyone does way Its fast well dust-free start build glider spend first evening just sharpening plane use fine diamond stone finish stropping crocus cloth Question Bob Eberle Did ever notice standard prop-pitch gauge accurate symmetrical prop blades use common protractor-type gauge certain radius center spar can measure pitch using chart formula P what have forward reverse flare blade point will throw gauge reading offpossibly lot about using prop-forming block gauge setup tool An Answer Bob Meuser make accurate measurement pitch gauge have measured actual pitch prop High-Flare Prop reason Indoor times have soared classes now use variable-pitch variable-diameter props drastically reduce models critical torque value torque level too low hold model cruise An alternative create props flare lot photo shows Jim Clems experiments drive section hub consists two parallel strips 007-inch carbon-fiber sheet flex under load Flexing can varied sanding width carbon fiber using narrower strips increase flare extending length center block reduce flare BJrn/c ELECTRONICS V RX WV0S etc FOR OLDER RADIO UPDATES GIoF8Cog Fo, FlyingSo,AI,,LoflCIeoConopyAoIobI BiIdor Ki 52S5 Sh.ed Ki $365 D1e Sheed Ki S495~ ULTIMATESPORT RC 255 Eot AhIond/PO Bo, 727/Sod, Sprog, ldo1, 83276 ULTKKATI W300 EPE1-208-547-3742FoF~heI,f,S,dSAsE JT LAThES ING MACHINES 304 562-3538 LATHES STARTING $194000 FREE CATALOG
Edition: Model Aviation - 1996/05
Page Numbers: 114, 115, 116
FREE FLIGHT INDOOR U 1m NOTE Last year some experimental Easy B models using wood bracing fuselage flown contests Pending formal clarification Indoor Contest Board aware Easy B wings may have form bracing bracing must wood according limited informal poll ICB members Change Address previous column listed two E-mail addresses Both have replaced rten@intexnet likely FF Indoor club has least member has E-mail address Can form quick-response network Drop E-mail sign up Also have anything column E-mail much easier unless have send drawings photos Biiig Schedule Gary Underwood proposal move activities yearly format unanimously accepted approval will yield us 110 flying dates Hangar 1 will begin activities January 6 end December 29 1996 visited Hangar 1 just prior Christmas several improvements taking place renovation northern wall now airtight doors cement blocks position providing new classrooms Navy should greatly reduce drift side side sliding truck door entrance temporarily sealed asbestos removal southern wall area will improved 1996 conjunction Votech School truck door impassable Navy utilizing another truck door northeastern portion hangar Tenny comment Gee whiz wish Lakehurst backyard Steering Poles Dedicated Cat fliers own steering poles original rules limited steering-pole length two meters minimum eight meters maximum recent ruling removed limits Richard Doig suggests toothpick now legal steering years fliers have used collapsible telescoping poles made fiberglass poles called crappie poles available bait-andtackle shops Most such poles extend least 20 feet require considerable skill practice Part problem two smallest-diameter sections limber enough start whipping around dont move very carefully Modern technology Kevlar now being used build smaller-diameter lighter poles much stiffer fiberglass poles Poles have another down side flat ceilings model close ceiling very easy jam pole tip ceiling disrupts aim timing sometimes model Pole Modifications Aluminum tubing inserted bottom section extends pole length example four feet equal former maximum allowable length 2 Precision aluminum tubing replaces flexible upper end Balloons Any balloon useful accurate steering high altitude large enough lift large fishing reel mounted short pole four six feet plus some additional weight much lift needed make balloon track movements quickly move bottom end four feet balloon must take longer about five seconds catch up soft lowerlift balloon can used intercept drifting model snag model bring down wont foul another flight will useful safely move models orbit prevent drifting obstacles above perhaps 50 feet Choice Balloon lift pure helium fixed quantity based solely volume gas enclosed balloon weight balloon filler spouts steering line subtract total helium lift Rubber balloons lose about 50% lift eight hours inflated volume needs enough retain steering capability end contest Lets put balloon size perspective lift varies cube radius lift 24-inch balloon eight times great 12-inch balloon Cat steering much different highceiling steering Any balloon small enough useful steering model near ceiling has little lift has no maneuverability balloon has enough lift useful useful tactic place balloon either prop wingtip hits balloon model doesnt stall drop too low can snag model string move new orbit experimented party balloons found 11-inch package rating party balloon will give adequate steering Cat least four hours Bedford TX site has quonset-type curved ceiling able catch model center building below peak move orbit needed Anti-Foaling Tubing rules mandate model steered zzzJ 114 Model Aviation s Jim Clems high-flare Pennyplane prop Parallel carbon-fiber strips flex under load Tenny photo low ceiling EIZf high ceiling IiJ9r Rubber got creeps Sketches tail hooks lock 0-rings place see text Tenny sketch lock front 0-rings place see text Balsa wedges 0-ring against hook rubber against 0-ring Tenny sketch a-ring motor hook wedge front ahead wing easy get string tangled prop high-ceiling fliers use inflatable plastic tube attached balloon steering line attaches lower end tubing leaving about 10 15 feet tubing used contact model Gary Underwood few others substitute flat plastic ribbon inflated tubing Either tubing ribbon prevents prop grabbing string model can released want release Flying Opportunities sessions listed below latest information available CDs events beginning June 1996 send schedules ASAP listings below include dates available time writing listing events regular schedule see January column Always verify contest date phone before leaving home CaliforniaSan Francisco area Indoor flying Mt Pleasant HS Gym corner White Ocala Roads As always dates confirmed subject possible change due circumstances yet unforeseen sessions run 9 am 1 pm Apr 13 May 18 1996 Get 9 am wish park near gym Otherwise park front along White Road entry gate will closed Contact Sherman Gillespie 6248 Bauer Ln San Jose CA 95135 Tel 408 2382981 CanadaOntario area Indoor flying Woodroffe Hugh School Ottawa Mondays 7 pm 10 pm 1995-96 season Apr 15 Apr 22 Apr29 May 6 May 13 May 27 1996 Contact Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 ConnecticutNorwich Indoor session scheduled Teachers Memorial Junior High School Norwich 9 am 2 pm April 13 1996 Contact John Koptonak 3 Wiemes Ct Waterford CT 06385 Tel 203 442-9903 FloridaMIAMA #6 April 20-21 1996 MacDill AFB #7 set May 18-19 1996 request contest dates has made Contact Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 contest details new dates OklahomaOklahoma City 1996 season finale contest Armory April 21 1996 Contact Edsel Ford 10613 W Country Drive Oklahoma City OK 73170 Tel 405 691-5411 OregonAlbany WMC Indoor schedule wraps up Cat II two-day meet Apr 27-28 South Albany High School has two flyable gyms 42foot Cat II 22-foot Cat contest begins noon Saturday goes until around 10 pm time off dinner symposium second day begins 830 am ends 3 pm Token awards given enter fly Entry fees begin $3 top out $6 per entrant Contact Bob Stalick 5066 NW Picadilly Cir Albany OR 97321 Tel 503 928-8101 additional details New JerseyLakehurst vastly expanded schedule 110 flying dates has arranged Gary Kit Underwood details Gary Underwood 24 Kennebee Ct Bordentown NJ 08505 Tel 609 3249004 fax 609 324-9005 E-mail 703141207 @compuservecOm VirginiaHampton area Langley Brainbusters winter Indoor contest schedule includes tentative dates 21 Apr 5 May 1996 1 pm 6 pm test flying beginning 11 am contests will held SBH Gym will feature following events EZ-13 Limited Pennyplane Bostonian No Cal A-6 8-inch handlaunch glider MiniStick events count scoring Contact Abram Van Dover 112 Tillerson Dr Newport News VA 23602 Tel 804 877-2830 WisconsinMilwaukee Bong Eagles have scheduled flying sessions Hamilton High School Auditorium 6214 W Warnimont Ave Milwaukee 7 pm 930 pm May 2 1996 information contact Joe Adams Box 391 Oak Creek WI 53154 Tel 414 762-3492 414 762-0010 Reading Plaas Jim Clem avidly collects plans kinds models studies great detail record models particularly classes flies notes rubber weight loop length launch turns record flight whenever data available turns charts rubber can estimate hard motor pushed loop length weight infers average strip width launch turns flight time postulates average rpm 20% 10% turns left process primes pump Jims first guess motor size new model Glide Testing Ive watched Jim Clem others test-glide Indoor models such Pennyplane FiD could never see point After prop free-wheeling no motor CG isnt likely right place Jim helped understand useful information gained glide-testing Once model has trimmed flight usual manner glide-testing motor removed lets him develop feel models performance mode later flying sessions Jim assembles model does normal preflight inspections Just before winding motor glide test last step sometimes reveals needed repair cracked rib loose bracing wire anything didnt show up static inspection may magnified flight loads trim test preflight Creepy Rubber Most model trimming can done low-ceiling sites can make kinds test flights use quartermotors predict full-motor altitude time determine level flight torqueall kinds neat things What cant easily deal rubber-creep problems Competitive Cat flying requires shorter rubber motors larger crosssection relatively lower launch torque avoid grinding model down ceiling-scrubbing move high ceilings longer loop needed hold enough turns Pennyplanes Bostonian models begins creep crawl Bostonian motors bunch up near nose tail upsetting trim lot clearance between motor stick Pennyplanes motor curls around prop shaft jamming prop works around rear hook jams against stick knots cant unwind land lots turns instead lots time have fighting problem Pennyplanes years As remember didnt have problems before 0-rings Figures 2 3 show what came together 95 Kibbie Dome session basic rear hook now use models locks rear 0-ring place works well up about 19-inch loops Pennyplane needed longer loops problem returned second sketch shows what did next ran insect-mounting pin through motorstick did one-turn wrap around hook absolutely stopped longer loop oozing around right side hook other end Figure 3 shows cross-section through prop hook After winding small piece balsa forced through 0-ring wedge 0-ring against hook rubber against 0-ring Problem solved easiest way Ive found insert wedge precut piece medium balsa length toothpick sharpened easy insertion After insertion clip both ends fingernail clippers seemed eliminate front hook jam several full-bore flights May1996 115 invited Ihe Home Jolly Rogers Free admission public Great Raffle RV site no hook-up HOSTED BY TIDEWATER RADIO CONTROL INC AMA Required ow hand TX & RX 1991 Approved ALL TURBINES MUST HAVE AMA WAIVER TO FLT RE UP LANDING FEE $1006 Contest Director Frank Rega 804 479-4905 WE HAVE OVER 26 YEARS EXPERIENCE IN RC AT WE 1466 windward dr mason ohio 45040 ph 513 398-5423 116 Model Aviation Bat Sheet Gene Stubbs Editor Need music wire sizes smaller generally available Musicmakers Kits Inc will sell quantity large small ten sizes 009 dia 026 dia 15 cents per ft $15 200-foot hank want take time out model building also offer kits interesting variety musical instruments Send $2 catalog Box 2117 Stillwater MN 55082 dust-control measure thats easy effective set up air filter simply draping piece fiberglass garden cloth over window fan intake side place fan bench front work area turn low speed Airborne dust particles drift toward fan get filtered out cloth clean filter just take cloth outdoors once shake out Another technique always use glider building rough shaping sharp block plane Maybe everyone does way Its fast well dust-free start build glider spend first evening just sharpening plane use fine diamond stone finish stropping crocus cloth Question Bob Eberle Did ever notice standard prop-pitch gauge accurate symmetrical prop blades use common protractor-type gauge certain radius center spar can measure pitch using chart formula P what have forward reverse flare blade point will throw gauge reading offpossibly lot about using prop-forming block gauge setup tool An Answer Bob Meuser make accurate measurement pitch gauge have measured actual pitch prop High-Flare Prop reason Indoor times have soared classes now use variable-pitch variable-diameter props drastically reduce models critical torque value torque level too low hold model cruise An alternative create props flare lot photo shows Jim Clems experiments drive section hub consists two parallel strips 007-inch carbon-fiber sheet flex under load Flexing can varied sanding width carbon fiber using narrower strips increase flare extending length center block reduce flare BJrn/c ELECTRONICS V RX WV0S etc FOR OLDER RADIO UPDATES GIoF8Cog Fo, FlyingSo,AI,,LoflCIeoConopyAoIobI BiIdor Ki 52S5 Sh.ed Ki $365 D1e Sheed Ki S495~ ULTIMATESPORT RC 255 Eot AhIond/PO Bo, 727/Sod, Sprog, ldo1, 83276 ULTKKATI W300 EPE1-208-547-3742FoF~heI,f,S,dSAsE JT LAThES ING MACHINES 304 562-3538 LATHES STARTING $194000 FREE CATALOG
