Free Flight INDOOR Bud Tenny BOSTONIAN IS ALIVE AND WELL picture shows lineup models entered special West Coast Bostonian event sponsored Scale Staflel club CDed Walt Mooney Some readers will remember Bostonian semi- Scale event originated Ed Whitten has writing Junior-oriented column magazine intent class encourage models fit closely original Indoor Cabin models being flown Indoor Cabin class created years ago Indoor models resemble actual mancarrying aircraft Consequently class incor porates box specified dimensions part fuselage plus requiring simulated win dows specifying minimum weight among other rules contest reported photo used almost same rules except models weigh 14 grams minimum As diehard Indoor endurance flier person ally am interested building Bostonian since models must fly long time per flight justify time spent building However judging watching standpoint event clearly challenge skill workmanship design showmanship fascinating watch some unusual models fly competition may remember Man hattan Cabin event has similar-sounding rules model size greater weight requirement lower As result Manhattan Cabins approach 10-mm flights good site normal Bostonians may struggle get 2 mm additional rule Bostonian modelsthere ajudging provision charis ma points factor between 10 12 awarded judge solely eye appeal particular design Charisma Factor used multiplier flight time eye-catching model Charisma Factor 12 need fly 90 seconds beat another model has 10 CF flight time 107 seconds Cabin stooge followup couple columns back used series photos detailing safe winding Indoor Cabin models using special multi-arm stooge automate process photos Ron Gansers stooge used NIMAS annual contest held West Baden IN June 1980 time forced admit forgotten designed original cabin stooge Ron liked well enough duplicate Larry Loucka Willoughby OH reminded conversation about stooge design Larry completed prototype Continued page 125 4 PITCH t RADIUS DIAMETER RADIUS PITCH 6 x D x TANO E ANGLE Blade angle props derived formula above Bud begins discussion basics prop pitch month see text 56 Model Aviation 30 models showed up Bostonian Cabin meet recentlyon West Coast sponsored Scale Staffel club Walt Mooney CD Bill Hannan photo Bernard Smith Australia whipped up device building Indoor props Protractor station set correct pitch different pitches helical props Boyd Felstead photo Edwin Heck CA Perry William S Camp bell Flying Eagles Club Penna Auburn Finger Lakes Radio Control Club Flying Aero Sport Team FAST Pensacola Aero modelers Charles Sotich Les Hard Arthur Gagnier Ronald Gooden Richard Everett RM Sherrod Edward McCarty RL Lainbe Albert R Gallik Gary Widmer Bob Brantley Jim Powers John Ferrer Lee Norcross Helena Flying Tigers Next month report successful fundraising efforts Aeronautics Division Hobby Industry Association America photos taken presentation made HIA AMA Dallas HIA Trade Show January FF Indoor/Tenny Continued page 56 time 1980 Midwest Indoor Champion ships Chicago later used 1980 Nats send off Cabin flights won Indoor Cabin 1980 NIMAS meet Tony Sutter Corpus Christi TX also similar stooge apparently designed about same time FAI rules followup Since last word Erv Rodemskys proposal drop FAI class Fl D model span 60 cm along limit rubber weight some other restrictions Ervs planned 60cm contest held Santa Ana hangar December 27 1981 course extremely competent FAI fliers California won right Wrong Eighteen-yearold Darryl Stevens son HLG whiz Curt Stevens won went set new Senior Indoor HLG record same day flight times came Out way high single flight used scoring 1 Darryl Stevens 2548 2 EN Rodemsky 2506 3 Cezar Banks 2227 4 Warren Williams 2006 5 Clarence Mather 2005 6 Andy Faykun 1700 should noted change rules originally proposed effect contest rubber weight increased maximum instead original l gram proposal EN noted basic goal rules proposal demonstratedno except Faykun hit ceiling no long periods time spent near ceiling has typical Fl D events recent years Now basic proposal has out discussed Indoor fliers over world inevitable rash counter-proposals has come about being aired Model Aviation other publications Erv has working number people trying deal Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed lust sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire will provide intense experience sophisticated R/C AflmodelerSpan 88Length 76Weight 1520 lbs er Jungmeister regular direct drive engines 60 go 65 span 11/4 scale ace aerobatic biplane timet Still fits car $129 4 New 1/4 Scale Pilot$119 Supplied unpaint-Coniing ed comes struction booklet 4 cale model QuadraRetracting o tie han saw enginesLanding Gear $30 5 e II figure WWII Fishier Patented Y-lock Also availP osystem tar 1/4 able 1/51/5 scale models scale $25 HOW TO ORDERDirect manufacturer no mark-upl Write calime accept check money order Master Charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept foreign orders pay freight information model send sell addressed envelope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 __ Phone 305 587-4861 Nor oIIIoied aih ohar Ca yany Looking Hard Find Soarinq Goodies 5/Awe c3ai/bkine f/aclory o has t complete comprehensive line RIO Soaring products toever exist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 1 7356 717 2444508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin May 1982 125 e%c%erctjrnitt Afle 109 % bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ATTENTION SAILPLANE ENTHUSIASTS 101 compiene Hi-Start Kit 115 Mm Aneenbiyt 14 Pound Pull tOO Feet Stauk Sutgnal taten coetnuous ieee seution Rent Line Chute Stake Tow Rings i-latdware ese52400 102 Coinpiete 2-Mater Hi-Stan Kit 5 Pound Putt 50 Feet 1/4 nuh Blank Labs Reel tine chute stoke Hardware Etu$1700 103 Rapiaseerent Tubing Open cia. Type tOO Feet Blauk Sutgiual tates 14 lb Poll$1600 104 Repianeesent Tubing 2-Meter 9 lb Pail5 900 105 Nyloe 14i-Start lieeTwisted S 325 55 lh Test White ColorBraided $425 lOB Steedard Pareobate Red Color Tow Ring$ 325 107 Winob Chat iS cob Diantater 230 lb Tent Heaun Outs Tow Ring Conneuting Rieg $ 525 108 Wiesh Liee 2000 ft Braided Nylon 93 lb Teat 51600 Choiue 01 Pull Test Whte Coin, itS lb Test $2000 Top Ounlits Aaailahle special t 51 lb Test 52500 Orders Other Thao Listed 150 lb Test $3200 109 Rent Kits Hi-Starts Ounib Wed-Up Large 5 500 Complete Tough Pienesi Hdwre small 5 450 Oireee SoIco Only/No Middle Men Hi-Sterno Are Ia Kit Form/IS Mioote Anoemble Complete lnormerieeo laeluded/ No Special Toolo Regained Seed SASE Fotther lnfoneatiao Order List Produots Total/ Add $200 Shippiegl Seed Money Order Cheek credit Cued No Esp Date w/Sigea tare COO Add $150 Aleeba Hewail Add $350 Mail Order em RLF Perdusta 8 3 Bee 178 Pasta IN 47454 5121 723-4318 problem latest consensus among US fliers also shared some fliers other countries no change should made FiD rules present new class could established explore depth some concepts developed during present discus sion end Erv has brought forth following proposal hammered out aid Dan Domina John Triolo 50cm Intermediate Indoor Duration Model 1 Projected wingspan 50cm 1969 maxi mum 2 Length excluding propeller 50cm maximum 3 Model weight least gram motor 4 Wing area 650 sq cm 10078 sq maximum 5 Stab span 30cm 1181 maximum 6 Stab area 325 sq cm 5039 sq maximum 7 Motor stick length front thrust bearing rear hook 25 cm 984 maximum 8 surfaces covered side 9 Propellers will have two blades no in-flight mechanically-adjusted parts 10 Multiwing area will cumulative 650 sq cm total 11 Models must conform concept simplicity opinion Contest Director modeler has incorporated gross new technology model will declared illegal model scale Scale model Micro-Air distinctive sound intheair. Technopowers 7 cylinder 4 cycle Radial Engine Send $200 catalog products TECHNOPOWER H INC 16650 South 104th AVENUt ORLAND PARK ILLINOIS 60462 Precision Products Box 1129 Richland WA 99352 has produced interesting plan set will enable average flier produce scale weigh Indoor models very nice kit pressure-sensitive labels form necessary beam markings Similar labels furnished can used tem plates cut out several metal parts increase scales durability No actual materi als except labels included kit bill materials included range weights handled scale run 001 oz smallest major graduation beam up 16 oz upper limit scale capacity anyone needs scale has time build plan good buy $3 info picture Bob Meusers column Prop fixtures number occasions column has dealt topic propeller design construction Most Indoor props built blocks carved form required helical twist method new block required propeller has different pitch photo shows method first developed Pete Andrews think since rib station Indoor prop must different angle fixture allows rib station angle individually set according some scheme prop design look closely photo outline FAI prop has fastened fixture prop spar visible beginning just right left-hand support central rod rod number protractors have assembled 1-in intervals protractor has bearing visible locking mechanism holds protractor angle measured line runs along horizontal bar back fixture propeller helical pitch distribution desired blade angle station can calculated Prop pitch basics propeller moves forward 12 in revolution said have effec tive pitch 1 2 definition assums propeller does slip make up building higher pitch basic design formula prop pitch Pitch 6 x tangent blade angle x diameter blade element required blade angle can derived realizing blade element will travel helix defined distance forward prop moves revolution circle same radius radius prop element prop shaft shown drawing graphically derives required blade angle single blade element topic will covered greater detail next time stay tuned Bud Tenny Box 545 Richardson TX 75080 FF Old-Timers/Haught Continued page 57 Too small model will brought down timely manner too big resulting straight-down parachute operation serious damage Ive seen models fly away thermal parachute dethermalizers duti fully following along behind Edito Ditto pop-up stabilizers probably stronger thermals As alternative pop-up-tail can pop up leading edge wing Ive never seen system use suspect some real potential rigglng problems solved anyone out has tried system would like share readers Finally theres spool system volves attaching suitable length line wing tip weight attached other end usually sewing thread spool spool canled near models CG released timer upsetting models lateral direc tional stability inducing steep spiraldive continues until spool contacts ground allowing line slacken thereby permit ting model recover land Gad Finding suitable length line could require iron nerves perhaps computer anyone out has used system let us expenence systems rely some sort timing device actuation Slow-burning fuse common followed mechanical clock work timers Some individuals distrusting mechanical timers use backup fuse well timer Sort like wearing suspenders belt hold up ones pants Timers malfunction occasion fuses go out tooor appear lit theyre actually scorched Some Old-Timers used air pneumatic timers depended needle valve adjustment event reasonable accuracy essential Ive short-fused myself occasion watched model DT prior sure max Other times Ive chased model two three minutes beyond max flight windy rugged conditions 1 26 Model Aviation RIC PILOT LOGBOOK@ AND FLIGHT RECORD *AIRCRAFT FLOWN *FLyING FIELDS *FLIGHT INSTRUCTOR *TOTAL HOURS *WEATHER CONDITIONS * FLIGHT DURATION *TRIM ADJUSTMENTS above can entered own personal flight log tirst time R/C LOGBOOK designed specifically pilot minitiature aircraft Whatever particular skill level may LOGBOOK will add enjoyment A/C flying LOGBOOK has durable hard-bound cover contains sufficient pages record years flying bythe average R/G pilotSil 981 Champion Hobbies$695 Postage Paid Dealer/Distributor inquiries welcomeOhio ,sidento odd 32C ooies tool CHAMPION HOBBIES 3716 Reemelin Cincinnati OH 45211 513 481-6961
Edition: Model Aviation - 1982/05
Page Numbers: 56, 125, 126
Free Flight INDOOR Bud Tenny BOSTONIAN IS ALIVE AND WELL picture shows lineup models entered special West Coast Bostonian event sponsored Scale Staflel club CDed Walt Mooney Some readers will remember Bostonian semi- Scale event originated Ed Whitten has writing Junior-oriented column magazine intent class encourage models fit closely original Indoor Cabin models being flown Indoor Cabin class created years ago Indoor models resemble actual mancarrying aircraft Consequently class incor porates box specified dimensions part fuselage plus requiring simulated win dows specifying minimum weight among other rules contest reported photo used almost same rules except models weigh 14 grams minimum As diehard Indoor endurance flier person ally am interested building Bostonian since models must fly long time per flight justify time spent building However judging watching standpoint event clearly challenge skill workmanship design showmanship fascinating watch some unusual models fly competition may remember Man hattan Cabin event has similar-sounding rules model size greater weight requirement lower As result Manhattan Cabins approach 10-mm flights good site normal Bostonians may struggle get 2 mm additional rule Bostonian modelsthere ajudging provision charis ma points factor between 10 12 awarded judge solely eye appeal particular design Charisma Factor used multiplier flight time eye-catching model Charisma Factor 12 need fly 90 seconds beat another model has 10 CF flight time 107 seconds Cabin stooge followup couple columns back used series photos detailing safe winding Indoor Cabin models using special multi-arm stooge automate process photos Ron Gansers stooge used NIMAS annual contest held West Baden IN June 1980 time forced admit forgotten designed original cabin stooge Ron liked well enough duplicate Larry Loucka Willoughby OH reminded conversation about stooge design Larry completed prototype Continued page 125 4 PITCH t RADIUS DIAMETER RADIUS PITCH 6 x D x TANO E ANGLE Blade angle props derived formula above Bud begins discussion basics prop pitch month see text 56 Model Aviation 30 models showed up Bostonian Cabin meet recentlyon West Coast sponsored Scale Staffel club Walt Mooney CD Bill Hannan photo Bernard Smith Australia whipped up device building Indoor props Protractor station set correct pitch different pitches helical props Boyd Felstead photo Edwin Heck CA Perry William S Camp bell Flying Eagles Club Penna Auburn Finger Lakes Radio Control Club Flying Aero Sport Team FAST Pensacola Aero modelers Charles Sotich Les Hard Arthur Gagnier Ronald Gooden Richard Everett RM Sherrod Edward McCarty RL Lainbe Albert R Gallik Gary Widmer Bob Brantley Jim Powers John Ferrer Lee Norcross Helena Flying Tigers Next month report successful fundraising efforts Aeronautics Division Hobby Industry Association America photos taken presentation made HIA AMA Dallas HIA Trade Show January FF Indoor/Tenny Continued page 56 time 1980 Midwest Indoor Champion ships Chicago later used 1980 Nats send off Cabin flights won Indoor Cabin 1980 NIMAS meet Tony Sutter Corpus Christi TX also similar stooge apparently designed about same time FAI rules followup Since last word Erv Rodemskys proposal drop FAI class Fl D model span 60 cm along limit rubber weight some other restrictions Ervs planned 60cm contest held Santa Ana hangar December 27 1981 course extremely competent FAI fliers California won right Wrong Eighteen-yearold Darryl Stevens son HLG whiz Curt Stevens won went set new Senior Indoor HLG record same day flight times came Out way high single flight used scoring 1 Darryl Stevens 2548 2 EN Rodemsky 2506 3 Cezar Banks 2227 4 Warren Williams 2006 5 Clarence Mather 2005 6 Andy Faykun 1700 should noted change rules originally proposed effect contest rubber weight increased maximum instead original l gram proposal EN noted basic goal rules proposal demonstratedno except Faykun hit ceiling no long periods time spent near ceiling has typical Fl D events recent years Now basic proposal has out discussed Indoor fliers over world inevitable rash counter-proposals has come about being aired Model Aviation other publications Erv has working number people trying deal Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed lust sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire will provide intense experience sophisticated R/C AflmodelerSpan 88Length 76Weight 1520 lbs er Jungmeister regular direct drive engines 60 go 65 span 11/4 scale ace aerobatic biplane timet Still fits car $129 4 New 1/4 Scale Pilot$119 Supplied unpaint-Coniing ed comes struction booklet 4 cale model QuadraRetracting o tie han saw enginesLanding Gear $30 5 e II figure WWII Fishier Patented Y-lock Also availP osystem tar 1/4 able 1/51/5 scale models scale $25 HOW TO ORDERDirect manufacturer no mark-upl Write calime accept check money order Master Charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept foreign orders pay freight information model send sell addressed envelope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 __ Phone 305 587-4861 Nor oIIIoied aih ohar Ca yany Looking Hard Find Soarinq Goodies 5/Awe c3ai/bkine f/aclory o has t complete comprehensive line RIO Soaring products toever exist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 1 7356 717 2444508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin May 1982 125 e%c%erctjrnitt Afle 109 % bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ATTENTION SAILPLANE ENTHUSIASTS 101 compiene Hi-Start Kit 115 Mm Aneenbiyt 14 Pound Pull tOO Feet Stauk Sutgnal taten coetnuous ieee seution Rent Line Chute Stake Tow Rings i-latdware ese52400 102 Coinpiete 2-Mater Hi-Stan Kit 5 Pound Putt 50 Feet 1/4 nuh Blank Labs Reel tine chute stoke Hardware Etu$1700 103 Rapiaseerent Tubing Open cia. Type tOO Feet Blauk Sutgiual tates 14 lb Poll$1600 104 Repianeesent Tubing 2-Meter 9 lb Pail5 900 105 Nyloe 14i-Start lieeTwisted S 325 55 lh Test White ColorBraided $425 lOB Steedard Pareobate Red Color Tow Ring$ 325 107 Winob Chat iS cob Diantater 230 lb Tent Heaun Outs Tow Ring Conneuting Rieg $ 525 108 Wiesh Liee 2000 ft Braided Nylon 93 lb Teat 51600 Choiue 01 Pull Test Whte Coin, itS lb Test $2000 Top Ounlits Aaailahle special t 51 lb Test 52500 Orders Other Thao Listed 150 lb Test $3200 109 Rent Kits Hi-Starts Ounib Wed-Up Large 5 500 Complete Tough Pienesi Hdwre small 5 450 Oireee SoIco Only/No Middle Men Hi-Sterno Are Ia Kit Form/IS Mioote Anoemble Complete lnormerieeo laeluded/ No Special Toolo Regained Seed SASE Fotther lnfoneatiao Order List Produots Total/ Add $200 Shippiegl Seed Money Order Cheek credit Cued No Esp Date w/Sigea tare COO Add $150 Aleeba Hewail Add $350 Mail Order em RLF Perdusta 8 3 Bee 178 Pasta IN 47454 5121 723-4318 problem latest consensus among US fliers also shared some fliers other countries no change should made FiD rules present new class could established explore depth some concepts developed during present discus sion end Erv has brought forth following proposal hammered out aid Dan Domina John Triolo 50cm Intermediate Indoor Duration Model 1 Projected wingspan 50cm 1969 maxi mum 2 Length excluding propeller 50cm maximum 3 Model weight least gram motor 4 Wing area 650 sq cm 10078 sq maximum 5 Stab span 30cm 1181 maximum 6 Stab area 325 sq cm 5039 sq maximum 7 Motor stick length front thrust bearing rear hook 25 cm 984 maximum 8 surfaces covered side 9 Propellers will have two blades no in-flight mechanically-adjusted parts 10 Multiwing area will cumulative 650 sq cm total 11 Models must conform concept simplicity opinion Contest Director modeler has incorporated gross new technology model will declared illegal model scale Scale model Micro-Air distinctive sound intheair. Technopowers 7 cylinder 4 cycle Radial Engine Send $200 catalog products TECHNOPOWER H INC 16650 South 104th AVENUt ORLAND PARK ILLINOIS 60462 Precision Products Box 1129 Richland WA 99352 has produced interesting plan set will enable average flier produce scale weigh Indoor models very nice kit pressure-sensitive labels form necessary beam markings Similar labels furnished can used tem plates cut out several metal parts increase scales durability No actual materi als except labels included kit bill materials included range weights handled scale run 001 oz smallest major graduation beam up 16 oz upper limit scale capacity anyone needs scale has time build plan good buy $3 info picture Bob Meusers column Prop fixtures number occasions column has dealt topic propeller design construction Most Indoor props built blocks carved form required helical twist method new block required propeller has different pitch photo shows method first developed Pete Andrews think since rib station Indoor prop must different angle fixture allows rib station angle individually set according some scheme prop design look closely photo outline FAI prop has fastened fixture prop spar visible beginning just right left-hand support central rod rod number protractors have assembled 1-in intervals protractor has bearing visible locking mechanism holds protractor angle measured line runs along horizontal bar back fixture propeller helical pitch distribution desired blade angle station can calculated Prop pitch basics propeller moves forward 12 in revolution said have effec tive pitch 1 2 definition assums propeller does slip make up building higher pitch basic design formula prop pitch Pitch 6 x tangent blade angle x diameter blade element required blade angle can derived realizing blade element will travel helix defined distance forward prop moves revolution circle same radius radius prop element prop shaft shown drawing graphically derives required blade angle single blade element topic will covered greater detail next time stay tuned Bud Tenny Box 545 Richardson TX 75080 FF Old-Timers/Haught Continued page 57 Too small model will brought down timely manner too big resulting straight-down parachute operation serious damage Ive seen models fly away thermal parachute dethermalizers duti fully following along behind Edito Ditto pop-up stabilizers probably stronger thermals As alternative pop-up-tail can pop up leading edge wing Ive never seen system use suspect some real potential rigglng problems solved anyone out has tried system would like share readers Finally theres spool system volves attaching suitable length line wing tip weight attached other end usually sewing thread spool spool canled near models CG released timer upsetting models lateral direc tional stability inducing steep spiraldive continues until spool contacts ground allowing line slacken thereby permit ting model recover land Gad Finding suitable length line could require iron nerves perhaps computer anyone out has used system let us expenence systems rely some sort timing device actuation Slow-burning fuse common followed mechanical clock work timers Some individuals distrusting mechanical timers use backup fuse well timer Sort like wearing suspenders belt hold up ones pants Timers malfunction occasion fuses go out tooor appear lit theyre actually scorched Some Old-Timers used air pneumatic timers depended needle valve adjustment event reasonable accuracy essential Ive short-fused myself occasion watched model DT prior sure max Other times Ive chased model two three minutes beyond max flight windy rugged conditions 1 26 Model Aviation RIC PILOT LOGBOOK@ AND FLIGHT RECORD *AIRCRAFT FLOWN *FLyING FIELDS *FLIGHT INSTRUCTOR *TOTAL HOURS *WEATHER CONDITIONS * FLIGHT DURATION *TRIM ADJUSTMENTS above can entered own personal flight log tirst time R/C LOGBOOK designed specifically pilot minitiature aircraft Whatever particular skill level may LOGBOOK will add enjoyment A/C flying LOGBOOK has durable hard-bound cover contains sufficient pages record years flying bythe average R/G pilotSil 981 Champion Hobbies$695 Postage Paid Dealer/Distributor inquiries welcomeOhio ,sidento odd 32C ooies tool CHAMPION HOBBIES 3716 Reemelin Cincinnati OH 45211 513 481-6961
Edition: Model Aviation - 1982/05
Page Numbers: 56, 125, 126
Free Flight INDOOR Bud Tenny BOSTONIAN IS ALIVE AND WELL picture shows lineup models entered special West Coast Bostonian event sponsored Scale Staflel club CDed Walt Mooney Some readers will remember Bostonian semi- Scale event originated Ed Whitten has writing Junior-oriented column magazine intent class encourage models fit closely original Indoor Cabin models being flown Indoor Cabin class created years ago Indoor models resemble actual mancarrying aircraft Consequently class incor porates box specified dimensions part fuselage plus requiring simulated win dows specifying minimum weight among other rules contest reported photo used almost same rules except models weigh 14 grams minimum As diehard Indoor endurance flier person ally am interested building Bostonian since models must fly long time per flight justify time spent building However judging watching standpoint event clearly challenge skill workmanship design showmanship fascinating watch some unusual models fly competition may remember Man hattan Cabin event has similar-sounding rules model size greater weight requirement lower As result Manhattan Cabins approach 10-mm flights good site normal Bostonians may struggle get 2 mm additional rule Bostonian modelsthere ajudging provision charis ma points factor between 10 12 awarded judge solely eye appeal particular design Charisma Factor used multiplier flight time eye-catching model Charisma Factor 12 need fly 90 seconds beat another model has 10 CF flight time 107 seconds Cabin stooge followup couple columns back used series photos detailing safe winding Indoor Cabin models using special multi-arm stooge automate process photos Ron Gansers stooge used NIMAS annual contest held West Baden IN June 1980 time forced admit forgotten designed original cabin stooge Ron liked well enough duplicate Larry Loucka Willoughby OH reminded conversation about stooge design Larry completed prototype Continued page 125 4 PITCH t RADIUS DIAMETER RADIUS PITCH 6 x D x TANO E ANGLE Blade angle props derived formula above Bud begins discussion basics prop pitch month see text 56 Model Aviation 30 models showed up Bostonian Cabin meet recentlyon West Coast sponsored Scale Staffel club Walt Mooney CD Bill Hannan photo Bernard Smith Australia whipped up device building Indoor props Protractor station set correct pitch different pitches helical props Boyd Felstead photo Edwin Heck CA Perry William S Camp bell Flying Eagles Club Penna Auburn Finger Lakes Radio Control Club Flying Aero Sport Team FAST Pensacola Aero modelers Charles Sotich Les Hard Arthur Gagnier Ronald Gooden Richard Everett RM Sherrod Edward McCarty RL Lainbe Albert R Gallik Gary Widmer Bob Brantley Jim Powers John Ferrer Lee Norcross Helena Flying Tigers Next month report successful fundraising efforts Aeronautics Division Hobby Industry Association America photos taken presentation made HIA AMA Dallas HIA Trade Show January FF Indoor/Tenny Continued page 56 time 1980 Midwest Indoor Champion ships Chicago later used 1980 Nats send off Cabin flights won Indoor Cabin 1980 NIMAS meet Tony Sutter Corpus Christi TX also similar stooge apparently designed about same time FAI rules followup Since last word Erv Rodemskys proposal drop FAI class Fl D model span 60 cm along limit rubber weight some other restrictions Ervs planned 60cm contest held Santa Ana hangar December 27 1981 course extremely competent FAI fliers California won right Wrong Eighteen-yearold Darryl Stevens son HLG whiz Curt Stevens won went set new Senior Indoor HLG record same day flight times came Out way high single flight used scoring 1 Darryl Stevens 2548 2 EN Rodemsky 2506 3 Cezar Banks 2227 4 Warren Williams 2006 5 Clarence Mather 2005 6 Andy Faykun 1700 should noted change rules originally proposed effect contest rubber weight increased maximum instead original l gram proposal EN noted basic goal rules proposal demonstratedno except Faykun hit ceiling no long periods time spent near ceiling has typical Fl D events recent years Now basic proposal has out discussed Indoor fliers over world inevitable rash counter-proposals has come about being aired Model Aviation other publications Erv has working number people trying deal Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed lust sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire will provide intense experience sophisticated R/C AflmodelerSpan 88Length 76Weight 1520 lbs er Jungmeister regular direct drive engines 60 go 65 span 11/4 scale ace aerobatic biplane timet Still fits car $129 4 New 1/4 Scale Pilot$119 Supplied unpaint-Coniing ed comes struction booklet 4 cale model QuadraRetracting o tie han saw enginesLanding Gear $30 5 e II figure WWII Fishier Patented Y-lock Also availP osystem tar 1/4 able 1/51/5 scale models scale $25 HOW TO ORDERDirect manufacturer no mark-upl Write calime accept check money order Master Charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept foreign orders pay freight information model send sell addressed envelope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 __ Phone 305 587-4861 Nor oIIIoied aih ohar Ca yany Looking Hard Find Soarinq Goodies 5/Awe c3ai/bkine f/aclory o has t complete comprehensive line RIO Soaring products toever exist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 1 7356 717 2444508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin May 1982 125 e%c%erctjrnitt Afle 109 % bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ATTENTION SAILPLANE ENTHUSIASTS 101 compiene Hi-Start Kit 115 Mm Aneenbiyt 14 Pound Pull tOO Feet Stauk Sutgnal taten coetnuous ieee seution Rent Line Chute Stake Tow Rings i-latdware ese52400 102 Coinpiete 2-Mater Hi-Stan Kit 5 Pound Putt 50 Feet 1/4 nuh Blank Labs Reel tine chute stoke Hardware Etu$1700 103 Rapiaseerent Tubing Open cia. Type tOO Feet Blauk Sutgiual tates 14 lb Poll$1600 104 Repianeesent Tubing 2-Meter 9 lb Pail5 900 105 Nyloe 14i-Start lieeTwisted S 325 55 lh Test White ColorBraided $425 lOB Steedard Pareobate Red Color Tow Ring$ 325 107 Winob Chat iS cob Diantater 230 lb Tent Heaun Outs Tow Ring Conneuting Rieg $ 525 108 Wiesh Liee 2000 ft Braided Nylon 93 lb Teat 51600 Choiue 01 Pull Test Whte Coin, itS lb Test $2000 Top Ounlits Aaailahle special t 51 lb Test 52500 Orders Other Thao Listed 150 lb Test $3200 109 Rent Kits Hi-Starts Ounib Wed-Up Large 5 500 Complete Tough Pienesi Hdwre small 5 450 Oireee SoIco Only/No Middle Men Hi-Sterno Are Ia Kit Form/IS Mioote Anoemble Complete lnormerieeo laeluded/ No Special Toolo Regained Seed SASE Fotther lnfoneatiao Order List Produots Total/ Add $200 Shippiegl Seed Money Order Cheek credit Cued No Esp Date w/Sigea tare COO Add $150 Aleeba Hewail Add $350 Mail Order em RLF Perdusta 8 3 Bee 178 Pasta IN 47454 5121 723-4318 problem latest consensus among US fliers also shared some fliers other countries no change should made FiD rules present new class could established explore depth some concepts developed during present discus sion end Erv has brought forth following proposal hammered out aid Dan Domina John Triolo 50cm Intermediate Indoor Duration Model 1 Projected wingspan 50cm 1969 maxi mum 2 Length excluding propeller 50cm maximum 3 Model weight least gram motor 4 Wing area 650 sq cm 10078 sq maximum 5 Stab span 30cm 1181 maximum 6 Stab area 325 sq cm 5039 sq maximum 7 Motor stick length front thrust bearing rear hook 25 cm 984 maximum 8 surfaces covered side 9 Propellers will have two blades no in-flight mechanically-adjusted parts 10 Multiwing area will cumulative 650 sq cm total 11 Models must conform concept simplicity opinion Contest Director modeler has incorporated gross new technology model will declared illegal model scale Scale model Micro-Air distinctive sound intheair. Technopowers 7 cylinder 4 cycle Radial Engine Send $200 catalog products TECHNOPOWER H INC 16650 South 104th AVENUt ORLAND PARK ILLINOIS 60462 Precision Products Box 1129 Richland WA 99352 has produced interesting plan set will enable average flier produce scale weigh Indoor models very nice kit pressure-sensitive labels form necessary beam markings Similar labels furnished can used tem plates cut out several metal parts increase scales durability No actual materi als except labels included kit bill materials included range weights handled scale run 001 oz smallest major graduation beam up 16 oz upper limit scale capacity anyone needs scale has time build plan good buy $3 info picture Bob Meusers column Prop fixtures number occasions column has dealt topic propeller design construction Most Indoor props built blocks carved form required helical twist method new block required propeller has different pitch photo shows method first developed Pete Andrews think since rib station Indoor prop must different angle fixture allows rib station angle individually set according some scheme prop design look closely photo outline FAI prop has fastened fixture prop spar visible beginning just right left-hand support central rod rod number protractors have assembled 1-in intervals protractor has bearing visible locking mechanism holds protractor angle measured line runs along horizontal bar back fixture propeller helical pitch distribution desired blade angle station can calculated Prop pitch basics propeller moves forward 12 in revolution said have effec tive pitch 1 2 definition assums propeller does slip make up building higher pitch basic design formula prop pitch Pitch 6 x tangent blade angle x diameter blade element required blade angle can derived realizing blade element will travel helix defined distance forward prop moves revolution circle same radius radius prop element prop shaft shown drawing graphically derives required blade angle single blade element topic will covered greater detail next time stay tuned Bud Tenny Box 545 Richardson TX 75080 FF Old-Timers/Haught Continued page 57 Too small model will brought down timely manner too big resulting straight-down parachute operation serious damage Ive seen models fly away thermal parachute dethermalizers duti fully following along behind Edito Ditto pop-up stabilizers probably stronger thermals As alternative pop-up-tail can pop up leading edge wing Ive never seen system use suspect some real potential rigglng problems solved anyone out has tried system would like share readers Finally theres spool system volves attaching suitable length line wing tip weight attached other end usually sewing thread spool spool canled near models CG released timer upsetting models lateral direc tional stability inducing steep spiraldive continues until spool contacts ground allowing line slacken thereby permit ting model recover land Gad Finding suitable length line could require iron nerves perhaps computer anyone out has used system let us expenence systems rely some sort timing device actuation Slow-burning fuse common followed mechanical clock work timers Some individuals distrusting mechanical timers use backup fuse well timer Sort like wearing suspenders belt hold up ones pants Timers malfunction occasion fuses go out tooor appear lit theyre actually scorched Some Old-Timers used air pneumatic timers depended needle valve adjustment event reasonable accuracy essential Ive short-fused myself occasion watched model DT prior sure max Other times Ive chased model two three minutes beyond max flight windy rugged conditions 1 26 Model Aviation RIC PILOT LOGBOOK@ AND FLIGHT RECORD *AIRCRAFT FLOWN *FLyING FIELDS *FLIGHT INSTRUCTOR *TOTAL HOURS *WEATHER CONDITIONS * FLIGHT DURATION *TRIM ADJUSTMENTS above can entered own personal flight log tirst time R/C LOGBOOK designed specifically pilot minitiature aircraft Whatever particular skill level may LOGBOOK will add enjoyment A/C flying LOGBOOK has durable hard-bound cover contains sufficient pages record years flying bythe average R/G pilotSil 981 Champion Hobbies$695 Postage Paid Dealer/Distributor inquiries welcomeOhio ,sidento odd 32C ooies tool CHAMPION HOBBIES 3716 Reemelin Cincinnati OH 45211 513 481-6961