Free Flight INDOOR Bud Tenny MAKE READY time year Indoor fliers begin think about upcoming contest season Dont like doput off looking models until night before contest usually find out warps paper-covered models holes microfilm models rubber have stripped model destroyed last spring trying balloon down rafters Besides used last patch ing film last spring isnt single sheet film storage Wise up Check tool kit models ready about tool kit Have replenished pins cleaned out driedup glue gun bought some new CyA glue replaced X-Acto blade repaired run down stand replaced dirty wiping rags etc tools normally carned Indoor tool kit still Outdoor FF box Are made-up motors proper order Did clean up last spring store cool place about making sure flight log has enough fresh pages Times a-wastin Sad news bright lights Eastern Seaboard Ed Whittens New York Indoor Times newsletter bit darker issue seems able arrange Nassau County Arena Long Beach remain open seems almost certain Low Library Rotunda Columbia University will available year Ron Williams no longer staff University no has stepped forward sponsor activ ity So lets wish New York bunch well search place fly time also fliers acknowledge indebtedness Ed Whitten Ron Wil liams hard work leadership over past several years Rubber testing back remarked coming shortage good rubber once Pirelli source dried up also noted need definitive test rubber quality nondestructive yet tests Cezar Banks built nifty torquemeter hobby shop materials Construction details column Now hed tell us about winder background . rubber almost-breaking stress own tests rubber serve follow old maxim Wind until well enough really competitive breaks back off turn order far Ive heard test described truly define potential piece rub- meets goals described above ber number persons have developed Continued page 155 62 Model Aviation Tflls ultra-long Easy B typifies European experiments class ws flown West Baden Doug Barbour weighs 17 grams still turned times 15 minutes An experimental super-light-foam Bostonian Cabin Burr Stanton Seven grams column really legalit has no windshield windows death content equal-leg gus sets what Nat says absolutely true Since description must cover least 90% Free Flight models apologize reminding about humble razor saw off-the-shelf miter box smaller gussetsand especially soft balsathe use single-edge razor blade appropriate razor saw some home-brew miter boxeswhich what arecome play Also scheme showed cutting unequal-leg gussets de sired proportions Nordic Glider trailing edges example undercambered ribs tend mite weak unequal-leg gussets have slight advantage long leg glued side rib Bob Meuser 4200 Gregory St Oakland CA 94619 FF Indoor/Tenny Continued page 62 Testing methods best-doc umented tests model rubber de veloped Fred Pearce test consisted stretching loop rubber about eight times normal length holding extension three minutes recording exten sion loop relaxed few inches time tension measured relaxation interval 5 example length rubber will have carefully measured its weight recorded pounds force tension has re corded relaxation interval force readings summed Fred Wakefield flier Dennis Jaecks decided refine method door Dennis describes testing way I Stretch test loop rubber until tension equals force Fl Fl computed formula Fl rubber weight grams loop length inches 2 3 Record loop length LI force Fl Stretch loop again force F2 F2 430 X rubber wt gin Ll 4 Record loop length L2 force F2 5 Relax loop 3 record force F3 6 Continue relax stretch 3 record force 7 Calculate energy stored sum ming following series F2F3 . 2 2 FnlFn 2 Finally compute energy storage E ft-lb/lb using F t x 16 x force summation Continued page 158 L- C Jee3 what dri Jrni 5f January 1984 155 1eJU 5iisi ri e1uI1 N SI 23 New Standard Giant Models 28 HP bs Send $100 Catalog 995 1 4 Direct SIes Only Plus shippiug Work Horse95 KIORITZ 24 32 HP 6% Lbs 1 79Dealerand Direct Now DistributePlus shippiq Sachs-Dolmar Engines Yea ger Machines ALL TO RUN INCLUDING 6 BOLT PROP HUB MOUN MUI-ILHS AVAILABLE AT EXTRA CHARGE Rear 3405 Cleveland Ave. SW Canton OH 44707 Phnn, I21SI LRLARIA 484-4374] FF Indoor/Tenny Continued paqe 155 use result two ways use data generated test First Freds analysis included dividing L2/LI result 73 less rub ber too hard old effective use value elongation greater 82 rubber too soft effective use case high-elongation values rub ber may test better later stored care fully cool dark no chemical fumes time did some tests cluded alternate heating cooling cycles under carefully-controlled conditions able reach meaningful conclusion due inadequacies before/after evaluations still believe some rub ber under some circumstances can im proved artificial aging second use data generated test directly compare energy storage data br different batches rubber similar elongation value rubber able store higher amounts energy will best also believe different prop model combinations work better differ ent elongation values have no hard data support idea would require very large amount testing prove dis prove concept Got torquemeter Anyone reason ably serious about Indoor flying should have torquemeter No matter what ceiling height model can outfly ceiling need torquemeter lower ceil ing need Lets see First amount torque motor launch determines very closely high model will climb have data high particular model/prop/rubber com bination climbed can learn get model within inches ceiling repeat edly particularly important ceiling full things hang up Second flying win must wind motor almost breaking time thats too much launch torque slowly unwind correct torque hook up launch hack off turns Ill cover detail another time basically winding way backing down leaves up 25% turns motor simply wound up launch torque have very repeatable tech nique allows keep good records useful future meets Finally winding done correctly models cruise letdown will go better Roll own photo shows excel lent torquemeter developed Cezar Banks can built entirely materials local hobby shop As shown tor quemeter mounts swivelled yoke slips clip mounted Cezars model box can get general idea photo following description may get started Otherwise Ill send photocopy Cezars sketch send SASE request main body torquemeter %2-in brass tubing Peck model PA-6 nylon thrust bearings end tor que element 015 music wire wrapped soldered Y V16 music wire both ends active 015-in part torque element 4/2-in long A6 music wire long enough form hook after passes through front thrust bearing grind tip hook smooth taper allow easy removal rubber back A6 wire passes through rear bearing secured Goldberg WCl 16 wheel collar Use long 2-56 screw mount wheel collar screw can serve rotation stop Another wheel col lar secured front hook using 2-56 Nyrod adapter about inch long instead set screw serves pointer may able see clearly photo dial has extension sticks out /2 below 2-in-diameter dial extension drilled allow release lever pass through release leve# extends back along length brass tube past screw-stop back unoperated position yuou pull release lever forward torque element allowed rotate release turns During launch preparation allows grab motor close hook spin out few turns will leave open loop rubber easy hook up prop shaft After flight can spin off rest turns let motor rest Once unit complete can ca librate arbitrary units linear scale can arrange beam balance ap plies torque rod Initially balance beam hang eight exactly beam center line will twist wire tilt beam rotate whole tor quemeter beam level mark dial end pointer Repeat oper ation moving weight 1 time until torque range need has calibrated Cezar transferred calibration colored vinyl sheet rub-on decals protected finished dial clear mylar tape looks great 158 Model Aviation DIVISION ROUSH IVIF ENGINE SEE HOT STUFFTMVIDEO-TIPS VHS CASSETTES #5 2 CLIP THIS COUPON SEND $5500 Check MO GET BOTH VHS TAPES PLUS 1 EA 2 oz HOT STUFF 2 oz SUPER T 3 oz HOT SHOT %23 FREE OFFER GOOD IN U S ONLY THRU JUNE 84 P0 BOX 836 flhj SIMI CA 93062 805 522-0062 Power Soar New Heights LT-50 Electric Motor 01 Cu equivelent gas engine displacement Send self-addressed stamped envelope catalog ap plication notes Leisure 11 Deerspring/lrvine/CA 92714 h Another photo shows latest trend Easy B designthe Swiss-type layout Actu ally Otto Rodenburg Holland flew simi lar Easy B West Baden after 1980 World Championships layout has seen ex tensive development England least proposal International class fitting layout has considered FAI nothing has adopted far last photo shows styrofoam Man hattan Cabin model built Burr Stanton Louisville KY whole racks experimental models some test flown during Indoor Week West Baden major new feature models Burr has experimenting ultra-lowdensity styrofoam Typical foam density ranges near pound per cubic foot able find some very light foam used instrument packaging hollowed-out fu selages versions simply drilled motor clearance achieved seven grams bare weight course models meet rule requiring transparent windshield windows Bud Tenny Box 545 Richardson TX 75080 FF World Champs/Cowley Continued page 63 changeable October spring weather favor important model flying event huge continent Australia disad vantaged modelers being spread thin over huge land mass As turned out surprisingly small group very dedicated enthusi asts New South Wales carried responsibility staging 1983 FE World Championships Goulburn 70 miles inland midway between Sydney Canberra Upon arrival evident done homework Accommo dations first class teams being housed week subsi dized budget rate $50 modern partially used Riverina College Eight small multi-story blocks individual rooms common sitting room floorideal team meetings Facilities included excel lent cafeteria lecture theater used timekeeper briefings symposium laundry room very necessary such sporting events gymnasium quickly commandeered Indoor enthusiasts Extras included FE Sym posium Report prepared NSWFF Society FE Plans Handbook con taining models participants nearby Victorian FE Society hosted PAl Open International flying field week before very im portant feature allowed visiting teams acclimate trim models practice Causing worry Saturdays events blown out high winds leapfrogging PlC Power FlH A-l Gilder Monday weather turned kind producing two perfect days model flying Open Interna tional US team members took six top nine places three events inevitable event known Australia atten dance record wouldnt set diffi culty travel outside own countries made appearance East ern Europe countries seem unlikely However USSR North Korea entered withdrew late date Surprisingly some expected countries didnt have competitors notably France Denmark kind competitor numbers actually attendance somewhat ex pected Actually few countries willing host event reason allow contest loca tion travelround world FAI EF global sport travel interna tional airlines relatively inexpensive easy days fact 18 coun tries represented Australia made fairly big competition site broad expanse short grassy sheep grazing land some concern about number wire fences dividing land paddocks associated risk damage models inconvenience retriev ers faced climbing area suffered five-year drought re cent rains left field dotted soggy patches newly-formed lake standing water low-lying area north Generally site acceptable nations being large enough virtually prevent loss models direction Official proceedings got underway model processing Thursday proceeded few problems Friday day Opening Cere mony college dawned cloudless bright calm took oppor tunity early-morning trimming field 20 mm away car After lunch official practice session enjoyed perfect conditions ganization facilities weather seem ingly perfect hopes high classic World Championships US team although composed al entirely fliers new World Championships good shape event FlA Glider paper probably strongest US unit Jim Bradley Dale Elder Matt Gewain first-time team members prac ticed together home Flordia weekly basis since April FiB Rub ber Steve Beebe George Schroedter joined Walt Ghio 4th consecutive World Championships event US truly World Class new US faces FlC Power Mike Ach terberg Rol Anderson Norm Poti together Team Manager Roger Simpson dominated International Power event preceding weekhope fully good sign No Need Make Christmas List Just Use Ad UNIQUE CHRISTMAS GIFT IDEAS lire Covers Tote Bags Hats quality line sportswear Designs just come aviation designs available top quality line sportswear designs direct printno heat transfer Three color B-25. r Cub. Gee Bee. P-40 Warhawks ker D VII 8. isten Eagle ts Special. Citabria. P-47 Thunderbolt arman Curtis Jenny. Corsair. Coaches ShirtS1295TShirt$6S5 Ladies TopSS5OLong Sleeve TS7CU ShortaSS95Baseball$SS5 Lined JacketS2195Foogball5S95 Tots BagS795Sweatshirt$950 Tire coverSI495Hooded SweatS1495 HatSUBS Wide choice colors sizes Send $100 new Illustrated Brochure Name Address city StateZip Size color Design now accept MasterCard & VIsa TO ORDER Send check money order Shipping S1-l5add 5150 Over $l5add 10% Maryland residents add 5% taxI Phase Art Hwy 382 Box 123L Waldorph MD 20601 301 843-3050 VEP IT SURE IS! all-time best flying plane NOW PRETTIEST Sill Wendts CESSNA AG WAGON uses simple mods convert GIANT UGLY STIK kit beauty Highly detailed full-size plans can used modify kit orcomnpletely scratch build theAG WAGON flies better original 0mm 0,5n Plior & Han, Ann6 SOav FOR QUADRA OR LARGER ENGINES FULLSIZE PLANS 104WS $25OOrr Call gemidarma Add 5% Sale Inal SEND CHECK OR MO TO TAYLORCHAFT LTD 216 Wtttaas Ave Ranenttte CA 95678 SEND LARGE vASE FOR COMPLETE I-CRAFT RROCHURES January 1984 159 ln$TireMost Sizes Available Covers $1495 IA GIANT UGLY STIK
Edition: Model Aviation - 1984/01
Page Numbers: 62, 155, 158, 159
Free Flight INDOOR Bud Tenny MAKE READY time year Indoor fliers begin think about upcoming contest season Dont like doput off looking models until night before contest usually find out warps paper-covered models holes microfilm models rubber have stripped model destroyed last spring trying balloon down rafters Besides used last patch ing film last spring isnt single sheet film storage Wise up Check tool kit models ready about tool kit Have replenished pins cleaned out driedup glue gun bought some new CyA glue replaced X-Acto blade repaired run down stand replaced dirty wiping rags etc tools normally carned Indoor tool kit still Outdoor FF box Are made-up motors proper order Did clean up last spring store cool place about making sure flight log has enough fresh pages Times a-wastin Sad news bright lights Eastern Seaboard Ed Whittens New York Indoor Times newsletter bit darker issue seems able arrange Nassau County Arena Long Beach remain open seems almost certain Low Library Rotunda Columbia University will available year Ron Williams no longer staff University no has stepped forward sponsor activ ity So lets wish New York bunch well search place fly time also fliers acknowledge indebtedness Ed Whitten Ron Wil liams hard work leadership over past several years Rubber testing back remarked coming shortage good rubber once Pirelli source dried up also noted need definitive test rubber quality nondestructive yet tests Cezar Banks built nifty torquemeter hobby shop materials Construction details column Now hed tell us about winder background . rubber almost-breaking stress own tests rubber serve follow old maxim Wind until well enough really competitive breaks back off turn order far Ive heard test described truly define potential piece rub- meets goals described above ber number persons have developed Continued page 155 62 Model Aviation Tflls ultra-long Easy B typifies European experiments class ws flown West Baden Doug Barbour weighs 17 grams still turned times 15 minutes An experimental super-light-foam Bostonian Cabin Burr Stanton Seven grams column really legalit has no windshield windows death content equal-leg gus sets what Nat says absolutely true Since description must cover least 90% Free Flight models apologize reminding about humble razor saw off-the-shelf miter box smaller gussetsand especially soft balsathe use single-edge razor blade appropriate razor saw some home-brew miter boxeswhich what arecome play Also scheme showed cutting unequal-leg gussets de sired proportions Nordic Glider trailing edges example undercambered ribs tend mite weak unequal-leg gussets have slight advantage long leg glued side rib Bob Meuser 4200 Gregory St Oakland CA 94619 FF Indoor/Tenny Continued page 62 Testing methods best-doc umented tests model rubber de veloped Fred Pearce test consisted stretching loop rubber about eight times normal length holding extension three minutes recording exten sion loop relaxed few inches time tension measured relaxation interval 5 example length rubber will have carefully measured its weight recorded pounds force tension has re corded relaxation interval force readings summed Fred Wakefield flier Dennis Jaecks decided refine method door Dennis describes testing way I Stretch test loop rubber until tension equals force Fl Fl computed formula Fl rubber weight grams loop length inches 2 3 Record loop length LI force Fl Stretch loop again force F2 F2 430 X rubber wt gin Ll 4 Record loop length L2 force F2 5 Relax loop 3 record force F3 6 Continue relax stretch 3 record force 7 Calculate energy stored sum ming following series F2F3 . 2 2 FnlFn 2 Finally compute energy storage E ft-lb/lb using F t x 16 x force summation Continued page 158 L- C Jee3 what dri Jrni 5f January 1984 155 1eJU 5iisi ri e1uI1 N SI 23 New Standard Giant Models 28 HP bs Send $100 Catalog 995 1 4 Direct SIes Only Plus shippiug Work Horse95 KIORITZ 24 32 HP 6% Lbs 1 79Dealerand Direct Now DistributePlus shippiq Sachs-Dolmar Engines Yea ger Machines ALL TO RUN INCLUDING 6 BOLT PROP HUB MOUN MUI-ILHS AVAILABLE AT EXTRA CHARGE Rear 3405 Cleveland Ave. SW Canton OH 44707 Phnn, I21SI LRLARIA 484-4374] FF Indoor/Tenny Continued paqe 155 use result two ways use data generated test First Freds analysis included dividing L2/LI result 73 less rub ber too hard old effective use value elongation greater 82 rubber too soft effective use case high-elongation values rub ber may test better later stored care fully cool dark no chemical fumes time did some tests cluded alternate heating cooling cycles under carefully-controlled conditions able reach meaningful conclusion due inadequacies before/after evaluations still believe some rub ber under some circumstances can im proved artificial aging second use data generated test directly compare energy storage data br different batches rubber similar elongation value rubber able store higher amounts energy will best also believe different prop model combinations work better differ ent elongation values have no hard data support idea would require very large amount testing prove dis prove concept Got torquemeter Anyone reason ably serious about Indoor flying should have torquemeter No matter what ceiling height model can outfly ceiling need torquemeter lower ceil ing need Lets see First amount torque motor launch determines very closely high model will climb have data high particular model/prop/rubber com bination climbed can learn get model within inches ceiling repeat edly particularly important ceiling full things hang up Second flying win must wind motor almost breaking time thats too much launch torque slowly unwind correct torque hook up launch hack off turns Ill cover detail another time basically winding way backing down leaves up 25% turns motor simply wound up launch torque have very repeatable tech nique allows keep good records useful future meets Finally winding done correctly models cruise letdown will go better Roll own photo shows excel lent torquemeter developed Cezar Banks can built entirely materials local hobby shop As shown tor quemeter mounts swivelled yoke slips clip mounted Cezars model box can get general idea photo following description may get started Otherwise Ill send photocopy Cezars sketch send SASE request main body torquemeter %2-in brass tubing Peck model PA-6 nylon thrust bearings end tor que element 015 music wire wrapped soldered Y V16 music wire both ends active 015-in part torque element 4/2-in long A6 music wire long enough form hook after passes through front thrust bearing grind tip hook smooth taper allow easy removal rubber back A6 wire passes through rear bearing secured Goldberg WCl 16 wheel collar Use long 2-56 screw mount wheel collar screw can serve rotation stop Another wheel col lar secured front hook using 2-56 Nyrod adapter about inch long instead set screw serves pointer may able see clearly photo dial has extension sticks out /2 below 2-in-diameter dial extension drilled allow release lever pass through release leve# extends back along length brass tube past screw-stop back unoperated position yuou pull release lever forward torque element allowed rotate release turns During launch preparation allows grab motor close hook spin out few turns will leave open loop rubber easy hook up prop shaft After flight can spin off rest turns let motor rest Once unit complete can ca librate arbitrary units linear scale can arrange beam balance ap plies torque rod Initially balance beam hang eight exactly beam center line will twist wire tilt beam rotate whole tor quemeter beam level mark dial end pointer Repeat oper ation moving weight 1 time until torque range need has calibrated Cezar transferred calibration colored vinyl sheet rub-on decals protected finished dial clear mylar tape looks great 158 Model Aviation DIVISION ROUSH IVIF ENGINE SEE HOT STUFFTMVIDEO-TIPS VHS CASSETTES #5 2 CLIP THIS COUPON SEND $5500 Check MO GET BOTH VHS TAPES PLUS 1 EA 2 oz HOT STUFF 2 oz SUPER T 3 oz HOT SHOT %23 FREE OFFER GOOD IN U S ONLY THRU JUNE 84 P0 BOX 836 flhj SIMI CA 93062 805 522-0062 Power Soar New Heights LT-50 Electric Motor 01 Cu equivelent gas engine displacement Send self-addressed stamped envelope catalog ap plication notes Leisure 11 Deerspring/lrvine/CA 92714 h Another photo shows latest trend Easy B designthe Swiss-type layout Actu ally Otto Rodenburg Holland flew simi lar Easy B West Baden after 1980 World Championships layout has seen ex tensive development England least proposal International class fitting layout has considered FAI nothing has adopted far last photo shows styrofoam Man hattan Cabin model built Burr Stanton Louisville KY whole racks experimental models some test flown during Indoor Week West Baden major new feature models Burr has experimenting ultra-lowdensity styrofoam Typical foam density ranges near pound per cubic foot able find some very light foam used instrument packaging hollowed-out fu selages versions simply drilled motor clearance achieved seven grams bare weight course models meet rule requiring transparent windshield windows Bud Tenny Box 545 Richardson TX 75080 FF World Champs/Cowley Continued page 63 changeable October spring weather favor important model flying event huge continent Australia disad vantaged modelers being spread thin over huge land mass As turned out surprisingly small group very dedicated enthusi asts New South Wales carried responsibility staging 1983 FE World Championships Goulburn 70 miles inland midway between Sydney Canberra Upon arrival evident done homework Accommo dations first class teams being housed week subsi dized budget rate $50 modern partially used Riverina College Eight small multi-story blocks individual rooms common sitting room floorideal team meetings Facilities included excel lent cafeteria lecture theater used timekeeper briefings symposium laundry room very necessary such sporting events gymnasium quickly commandeered Indoor enthusiasts Extras included FE Sym posium Report prepared NSWFF Society FE Plans Handbook con taining models participants nearby Victorian FE Society hosted PAl Open International flying field week before very im portant feature allowed visiting teams acclimate trim models practice Causing worry Saturdays events blown out high winds leapfrogging PlC Power FlH A-l Gilder Monday weather turned kind producing two perfect days model flying Open Interna tional US team members took six top nine places three events inevitable event known Australia atten dance record wouldnt set diffi culty travel outside own countries made appearance East ern Europe countries seem unlikely However USSR North Korea entered withdrew late date Surprisingly some expected countries didnt have competitors notably France Denmark kind competitor numbers actually attendance somewhat ex pected Actually few countries willing host event reason allow contest loca tion travelround world FAI EF global sport travel interna tional airlines relatively inexpensive easy days fact 18 coun tries represented Australia made fairly big competition site broad expanse short grassy sheep grazing land some concern about number wire fences dividing land paddocks associated risk damage models inconvenience retriev ers faced climbing area suffered five-year drought re cent rains left field dotted soggy patches newly-formed lake standing water low-lying area north Generally site acceptable nations being large enough virtually prevent loss models direction Official proceedings got underway model processing Thursday proceeded few problems Friday day Opening Cere mony college dawned cloudless bright calm took oppor tunity early-morning trimming field 20 mm away car After lunch official practice session enjoyed perfect conditions ganization facilities weather seem ingly perfect hopes high classic World Championships US team although composed al entirely fliers new World Championships good shape event FlA Glider paper probably strongest US unit Jim Bradley Dale Elder Matt Gewain first-time team members prac ticed together home Flordia weekly basis since April FiB Rub ber Steve Beebe George Schroedter joined Walt Ghio 4th consecutive World Championships event US truly World Class new US faces FlC Power Mike Ach terberg Rol Anderson Norm Poti together Team Manager Roger Simpson dominated International Power event preceding weekhope fully good sign No Need Make Christmas List Just Use Ad UNIQUE CHRISTMAS GIFT IDEAS lire Covers Tote Bags Hats quality line sportswear Designs just come aviation designs available top quality line sportswear designs direct printno heat transfer Three color B-25. r Cub. Gee Bee. P-40 Warhawks ker D VII 8. isten Eagle ts Special. Citabria. P-47 Thunderbolt arman Curtis Jenny. Corsair. Coaches ShirtS1295TShirt$6S5 Ladies TopSS5OLong Sleeve TS7CU ShortaSS95Baseball$SS5 Lined JacketS2195Foogball5S95 Tots BagS795Sweatshirt$950 Tire coverSI495Hooded SweatS1495 HatSUBS Wide choice colors sizes Send $100 new Illustrated Brochure Name Address city StateZip Size color Design now accept MasterCard & VIsa TO ORDER Send check money order Shipping S1-l5add 5150 Over $l5add 10% Maryland residents add 5% taxI Phase Art Hwy 382 Box 123L Waldorph MD 20601 301 843-3050 VEP IT SURE IS! all-time best flying plane NOW PRETTIEST Sill Wendts CESSNA AG WAGON uses simple mods convert GIANT UGLY STIK kit beauty Highly detailed full-size plans can used modify kit orcomnpletely scratch build theAG WAGON flies better original 0mm 0,5n Plior & Han, Ann6 SOav FOR QUADRA OR LARGER ENGINES FULLSIZE PLANS 104WS $25OOrr Call gemidarma Add 5% Sale Inal SEND CHECK OR MO TO TAYLORCHAFT LTD 216 Wtttaas Ave Ranenttte CA 95678 SEND LARGE vASE FOR COMPLETE I-CRAFT RROCHURES January 1984 159 ln$TireMost Sizes Available Covers $1495 IA GIANT UGLY STIK
Edition: Model Aviation - 1984/01
Page Numbers: 62, 155, 158, 159
Free Flight INDOOR Bud Tenny MAKE READY time year Indoor fliers begin think about upcoming contest season Dont like doput off looking models until night before contest usually find out warps paper-covered models holes microfilm models rubber have stripped model destroyed last spring trying balloon down rafters Besides used last patch ing film last spring isnt single sheet film storage Wise up Check tool kit models ready about tool kit Have replenished pins cleaned out driedup glue gun bought some new CyA glue replaced X-Acto blade repaired run down stand replaced dirty wiping rags etc tools normally carned Indoor tool kit still Outdoor FF box Are made-up motors proper order Did clean up last spring store cool place about making sure flight log has enough fresh pages Times a-wastin Sad news bright lights Eastern Seaboard Ed Whittens New York Indoor Times newsletter bit darker issue seems able arrange Nassau County Arena Long Beach remain open seems almost certain Low Library Rotunda Columbia University will available year Ron Williams no longer staff University no has stepped forward sponsor activ ity So lets wish New York bunch well search place fly time also fliers acknowledge indebtedness Ed Whitten Ron Wil liams hard work leadership over past several years Rubber testing back remarked coming shortage good rubber once Pirelli source dried up also noted need definitive test rubber quality nondestructive yet tests Cezar Banks built nifty torquemeter hobby shop materials Construction details column Now hed tell us about winder background . rubber almost-breaking stress own tests rubber serve follow old maxim Wind until well enough really competitive breaks back off turn order far Ive heard test described truly define potential piece rub- meets goals described above ber number persons have developed Continued page 155 62 Model Aviation Tflls ultra-long Easy B typifies European experiments class ws flown West Baden Doug Barbour weighs 17 grams still turned times 15 minutes An experimental super-light-foam Bostonian Cabin Burr Stanton Seven grams column really legalit has no windshield windows death content equal-leg gus sets what Nat says absolutely true Since description must cover least 90% Free Flight models apologize reminding about humble razor saw off-the-shelf miter box smaller gussetsand especially soft balsathe use single-edge razor blade appropriate razor saw some home-brew miter boxeswhich what arecome play Also scheme showed cutting unequal-leg gussets de sired proportions Nordic Glider trailing edges example undercambered ribs tend mite weak unequal-leg gussets have slight advantage long leg glued side rib Bob Meuser 4200 Gregory St Oakland CA 94619 FF Indoor/Tenny Continued page 62 Testing methods best-doc umented tests model rubber de veloped Fred Pearce test consisted stretching loop rubber about eight times normal length holding extension three minutes recording exten sion loop relaxed few inches time tension measured relaxation interval 5 example length rubber will have carefully measured its weight recorded pounds force tension has re corded relaxation interval force readings summed Fred Wakefield flier Dennis Jaecks decided refine method door Dennis describes testing way I Stretch test loop rubber until tension equals force Fl Fl computed formula Fl rubber weight grams loop length inches 2 3 Record loop length LI force Fl Stretch loop again force F2 F2 430 X rubber wt gin Ll 4 Record loop length L2 force F2 5 Relax loop 3 record force F3 6 Continue relax stretch 3 record force 7 Calculate energy stored sum ming following series F2F3 . 2 2 FnlFn 2 Finally compute energy storage E ft-lb/lb using F t x 16 x force summation Continued page 158 L- C Jee3 what dri Jrni 5f January 1984 155 1eJU 5iisi ri e1uI1 N SI 23 New Standard Giant Models 28 HP bs Send $100 Catalog 995 1 4 Direct SIes Only Plus shippiug Work Horse95 KIORITZ 24 32 HP 6% Lbs 1 79Dealerand Direct Now DistributePlus shippiq Sachs-Dolmar Engines Yea ger Machines ALL TO RUN INCLUDING 6 BOLT PROP HUB MOUN MUI-ILHS AVAILABLE AT EXTRA CHARGE Rear 3405 Cleveland Ave. SW Canton OH 44707 Phnn, I21SI LRLARIA 484-4374] FF Indoor/Tenny Continued paqe 155 use result two ways use data generated test First Freds analysis included dividing L2/LI result 73 less rub ber too hard old effective use value elongation greater 82 rubber too soft effective use case high-elongation values rub ber may test better later stored care fully cool dark no chemical fumes time did some tests cluded alternate heating cooling cycles under carefully-controlled conditions able reach meaningful conclusion due inadequacies before/after evaluations still believe some rub ber under some circumstances can im proved artificial aging second use data generated test directly compare energy storage data br different batches rubber similar elongation value rubber able store higher amounts energy will best also believe different prop model combinations work better differ ent elongation values have no hard data support idea would require very large amount testing prove dis prove concept Got torquemeter Anyone reason ably serious about Indoor flying should have torquemeter No matter what ceiling height model can outfly ceiling need torquemeter lower ceil ing need Lets see First amount torque motor launch determines very closely high model will climb have data high particular model/prop/rubber com bination climbed can learn get model within inches ceiling repeat edly particularly important ceiling full things hang up Second flying win must wind motor almost breaking time thats too much launch torque slowly unwind correct torque hook up launch hack off turns Ill cover detail another time basically winding way backing down leaves up 25% turns motor simply wound up launch torque have very repeatable tech nique allows keep good records useful future meets Finally winding done correctly models cruise letdown will go better Roll own photo shows excel lent torquemeter developed Cezar Banks can built entirely materials local hobby shop As shown tor quemeter mounts swivelled yoke slips clip mounted Cezars model box can get general idea photo following description may get started Otherwise Ill send photocopy Cezars sketch send SASE request main body torquemeter %2-in brass tubing Peck model PA-6 nylon thrust bearings end tor que element 015 music wire wrapped soldered Y V16 music wire both ends active 015-in part torque element 4/2-in long A6 music wire long enough form hook after passes through front thrust bearing grind tip hook smooth taper allow easy removal rubber back A6 wire passes through rear bearing secured Goldberg WCl 16 wheel collar Use long 2-56 screw mount wheel collar screw can serve rotation stop Another wheel col lar secured front hook using 2-56 Nyrod adapter about inch long instead set screw serves pointer may able see clearly photo dial has extension sticks out /2 below 2-in-diameter dial extension drilled allow release lever pass through release leve# extends back along length brass tube past screw-stop back unoperated position yuou pull release lever forward torque element allowed rotate release turns During launch preparation allows grab motor close hook spin out few turns will leave open loop rubber easy hook up prop shaft After flight can spin off rest turns let motor rest Once unit complete can ca librate arbitrary units linear scale can arrange beam balance ap plies torque rod Initially balance beam hang eight exactly beam center line will twist wire tilt beam rotate whole tor quemeter beam level mark dial end pointer Repeat oper ation moving weight 1 time until torque range need has calibrated Cezar transferred calibration colored vinyl sheet rub-on decals protected finished dial clear mylar tape looks great 158 Model Aviation DIVISION ROUSH IVIF ENGINE SEE HOT STUFFTMVIDEO-TIPS VHS CASSETTES #5 2 CLIP THIS COUPON SEND $5500 Check MO GET BOTH VHS TAPES PLUS 1 EA 2 oz HOT STUFF 2 oz SUPER T 3 oz HOT SHOT %23 FREE OFFER GOOD IN U S ONLY THRU JUNE 84 P0 BOX 836 flhj SIMI CA 93062 805 522-0062 Power Soar New Heights LT-50 Electric Motor 01 Cu equivelent gas engine displacement Send self-addressed stamped envelope catalog ap plication notes Leisure 11 Deerspring/lrvine/CA 92714 h Another photo shows latest trend Easy B designthe Swiss-type layout Actu ally Otto Rodenburg Holland flew simi lar Easy B West Baden after 1980 World Championships layout has seen ex tensive development England least proposal International class fitting layout has considered FAI nothing has adopted far last photo shows styrofoam Man hattan Cabin model built Burr Stanton Louisville KY whole racks experimental models some test flown during Indoor Week West Baden major new feature models Burr has experimenting ultra-lowdensity styrofoam Typical foam density ranges near pound per cubic foot able find some very light foam used instrument packaging hollowed-out fu selages versions simply drilled motor clearance achieved seven grams bare weight course models meet rule requiring transparent windshield windows Bud Tenny Box 545 Richardson TX 75080 FF World Champs/Cowley Continued page 63 changeable October spring weather favor important model flying event huge continent Australia disad vantaged modelers being spread thin over huge land mass As turned out surprisingly small group very dedicated enthusi asts New South Wales carried responsibility staging 1983 FE World Championships Goulburn 70 miles inland midway between Sydney Canberra Upon arrival evident done homework Accommo dations first class teams being housed week subsi dized budget rate $50 modern partially used Riverina College Eight small multi-story blocks individual rooms common sitting room floorideal team meetings Facilities included excel lent cafeteria lecture theater used timekeeper briefings symposium laundry room very necessary such sporting events gymnasium quickly commandeered Indoor enthusiasts Extras included FE Sym posium Report prepared NSWFF Society FE Plans Handbook con taining models participants nearby Victorian FE Society hosted PAl Open International flying field week before very im portant feature allowed visiting teams acclimate trim models practice Causing worry Saturdays events blown out high winds leapfrogging PlC Power FlH A-l Gilder Monday weather turned kind producing two perfect days model flying Open Interna tional US team members took six top nine places three events inevitable event known Australia atten dance record wouldnt set diffi culty travel outside own countries made appearance East ern Europe countries seem unlikely However USSR North Korea entered withdrew late date Surprisingly some expected countries didnt have competitors notably France Denmark kind competitor numbers actually attendance somewhat ex pected Actually few countries willing host event reason allow contest loca tion travelround world FAI EF global sport travel interna tional airlines relatively inexpensive easy days fact 18 coun tries represented Australia made fairly big competition site broad expanse short grassy sheep grazing land some concern about number wire fences dividing land paddocks associated risk damage models inconvenience retriev ers faced climbing area suffered five-year drought re cent rains left field dotted soggy patches newly-formed lake standing water low-lying area north Generally site acceptable nations being large enough virtually prevent loss models direction Official proceedings got underway model processing Thursday proceeded few problems Friday day Opening Cere mony college dawned cloudless bright calm took oppor tunity early-morning trimming field 20 mm away car After lunch official practice session enjoyed perfect conditions ganization facilities weather seem ingly perfect hopes high classic World Championships US team although composed al entirely fliers new World Championships good shape event FlA Glider paper probably strongest US unit Jim Bradley Dale Elder Matt Gewain first-time team members prac ticed together home Flordia weekly basis since April FiB Rub ber Steve Beebe George Schroedter joined Walt Ghio 4th consecutive World Championships event US truly World Class new US faces FlC Power Mike Ach terberg Rol Anderson Norm Poti together Team Manager Roger Simpson dominated International Power event preceding weekhope fully good sign No Need Make Christmas List Just Use Ad UNIQUE CHRISTMAS GIFT IDEAS lire Covers Tote Bags Hats quality line sportswear Designs just come aviation designs available top quality line sportswear designs direct printno heat transfer Three color B-25. r Cub. Gee Bee. P-40 Warhawks ker D VII 8. isten Eagle ts Special. Citabria. P-47 Thunderbolt arman Curtis Jenny. Corsair. Coaches ShirtS1295TShirt$6S5 Ladies TopSS5OLong Sleeve TS7CU ShortaSS95Baseball$SS5 Lined JacketS2195Foogball5S95 Tots BagS795Sweatshirt$950 Tire coverSI495Hooded SweatS1495 HatSUBS Wide choice colors sizes Send $100 new Illustrated Brochure Name Address city StateZip Size color Design now accept MasterCard & VIsa TO ORDER Send check money order Shipping S1-l5add 5150 Over $l5add 10% Maryland residents add 5% taxI Phase Art Hwy 382 Box 123L Waldorph MD 20601 301 843-3050 VEP IT SURE IS! all-time best flying plane NOW PRETTIEST Sill Wendts CESSNA AG WAGON uses simple mods convert GIANT UGLY STIK kit beauty Highly detailed full-size plans can used modify kit orcomnpletely scratch build theAG WAGON flies better original 0mm 0,5n Plior & Han, Ann6 SOav FOR QUADRA OR LARGER ENGINES FULLSIZE PLANS 104WS $25OOrr Call gemidarma Add 5% Sale Inal SEND CHECK OR MO TO TAYLORCHAFT LTD 216 Wtttaas Ave Ranenttte CA 95678 SEND LARGE vASE FOR COMPLETE I-CRAFT RROCHURES January 1984 159 ln$TireMost Sizes Available Covers $1495 IA GIANT UGLY STIK
Edition: Model Aviation - 1984/01
Page Numbers: 62, 155, 158, 159
Free Flight INDOOR Bud Tenny MAKE READY time year Indoor fliers begin think about upcoming contest season Dont like doput off looking models until night before contest usually find out warps paper-covered models holes microfilm models rubber have stripped model destroyed last spring trying balloon down rafters Besides used last patch ing film last spring isnt single sheet film storage Wise up Check tool kit models ready about tool kit Have replenished pins cleaned out driedup glue gun bought some new CyA glue replaced X-Acto blade repaired run down stand replaced dirty wiping rags etc tools normally carned Indoor tool kit still Outdoor FF box Are made-up motors proper order Did clean up last spring store cool place about making sure flight log has enough fresh pages Times a-wastin Sad news bright lights Eastern Seaboard Ed Whittens New York Indoor Times newsletter bit darker issue seems able arrange Nassau County Arena Long Beach remain open seems almost certain Low Library Rotunda Columbia University will available year Ron Williams no longer staff University no has stepped forward sponsor activ ity So lets wish New York bunch well search place fly time also fliers acknowledge indebtedness Ed Whitten Ron Wil liams hard work leadership over past several years Rubber testing back remarked coming shortage good rubber once Pirelli source dried up also noted need definitive test rubber quality nondestructive yet tests Cezar Banks built nifty torquemeter hobby shop materials Construction details column Now hed tell us about winder background . rubber almost-breaking stress own tests rubber serve follow old maxim Wind until well enough really competitive breaks back off turn order far Ive heard test described truly define potential piece rub- meets goals described above ber number persons have developed Continued page 155 62 Model Aviation Tflls ultra-long Easy B typifies European experiments class ws flown West Baden Doug Barbour weighs 17 grams still turned times 15 minutes An experimental super-light-foam Bostonian Cabin Burr Stanton Seven grams column really legalit has no windshield windows death content equal-leg gus sets what Nat says absolutely true Since description must cover least 90% Free Flight models apologize reminding about humble razor saw off-the-shelf miter box smaller gussetsand especially soft balsathe use single-edge razor blade appropriate razor saw some home-brew miter boxeswhich what arecome play Also scheme showed cutting unequal-leg gussets de sired proportions Nordic Glider trailing edges example undercambered ribs tend mite weak unequal-leg gussets have slight advantage long leg glued side rib Bob Meuser 4200 Gregory St Oakland CA 94619 FF Indoor/Tenny Continued page 62 Testing methods best-doc umented tests model rubber de veloped Fred Pearce test consisted stretching loop rubber about eight times normal length holding extension three minutes recording exten sion loop relaxed few inches time tension measured relaxation interval 5 example length rubber will have carefully measured its weight recorded pounds force tension has re corded relaxation interval force readings summed Fred Wakefield flier Dennis Jaecks decided refine method door Dennis describes testing way I Stretch test loop rubber until tension equals force Fl Fl computed formula Fl rubber weight grams loop length inches 2 3 Record loop length LI force Fl Stretch loop again force F2 F2 430 X rubber wt gin Ll 4 Record loop length L2 force F2 5 Relax loop 3 record force F3 6 Continue relax stretch 3 record force 7 Calculate energy stored sum ming following series F2F3 . 2 2 FnlFn 2 Finally compute energy storage E ft-lb/lb using F t x 16 x force summation Continued page 158 L- C Jee3 what dri Jrni 5f January 1984 155 1eJU 5iisi ri e1uI1 N SI 23 New Standard Giant Models 28 HP bs Send $100 Catalog 995 1 4 Direct SIes Only Plus shippiug Work Horse95 KIORITZ 24 32 HP 6% Lbs 1 79Dealerand Direct Now DistributePlus shippiq Sachs-Dolmar Engines Yea ger Machines ALL TO RUN INCLUDING 6 BOLT PROP HUB MOUN MUI-ILHS AVAILABLE AT EXTRA CHARGE Rear 3405 Cleveland Ave. SW Canton OH 44707 Phnn, I21SI LRLARIA 484-4374] FF Indoor/Tenny Continued paqe 155 use result two ways use data generated test First Freds analysis included dividing L2/LI result 73 less rub ber too hard old effective use value elongation greater 82 rubber too soft effective use case high-elongation values rub ber may test better later stored care fully cool dark no chemical fumes time did some tests cluded alternate heating cooling cycles under carefully-controlled conditions able reach meaningful conclusion due inadequacies before/after evaluations still believe some rub ber under some circumstances can im proved artificial aging second use data generated test directly compare energy storage data br different batches rubber similar elongation value rubber able store higher amounts energy will best also believe different prop model combinations work better differ ent elongation values have no hard data support idea would require very large amount testing prove dis prove concept Got torquemeter Anyone reason ably serious about Indoor flying should have torquemeter No matter what ceiling height model can outfly ceiling need torquemeter lower ceil ing need Lets see First amount torque motor launch determines very closely high model will climb have data high particular model/prop/rubber com bination climbed can learn get model within inches ceiling repeat edly particularly important ceiling full things hang up Second flying win must wind motor almost breaking time thats too much launch torque slowly unwind correct torque hook up launch hack off turns Ill cover detail another time basically winding way backing down leaves up 25% turns motor simply wound up launch torque have very repeatable tech nique allows keep good records useful future meets Finally winding done correctly models cruise letdown will go better Roll own photo shows excel lent torquemeter developed Cezar Banks can built entirely materials local hobby shop As shown tor quemeter mounts swivelled yoke slips clip mounted Cezars model box can get general idea photo following description may get started Otherwise Ill send photocopy Cezars sketch send SASE request main body torquemeter %2-in brass tubing Peck model PA-6 nylon thrust bearings end tor que element 015 music wire wrapped soldered Y V16 music wire both ends active 015-in part torque element 4/2-in long A6 music wire long enough form hook after passes through front thrust bearing grind tip hook smooth taper allow easy removal rubber back A6 wire passes through rear bearing secured Goldberg WCl 16 wheel collar Use long 2-56 screw mount wheel collar screw can serve rotation stop Another wheel col lar secured front hook using 2-56 Nyrod adapter about inch long instead set screw serves pointer may able see clearly photo dial has extension sticks out /2 below 2-in-diameter dial extension drilled allow release lever pass through release leve# extends back along length brass tube past screw-stop back unoperated position yuou pull release lever forward torque element allowed rotate release turns During launch preparation allows grab motor close hook spin out few turns will leave open loop rubber easy hook up prop shaft After flight can spin off rest turns let motor rest Once unit complete can ca librate arbitrary units linear scale can arrange beam balance ap plies torque rod Initially balance beam hang eight exactly beam center line will twist wire tilt beam rotate whole tor quemeter beam level mark dial end pointer Repeat oper ation moving weight 1 time until torque range need has calibrated Cezar transferred calibration colored vinyl sheet rub-on decals protected finished dial clear mylar tape looks great 158 Model Aviation DIVISION ROUSH IVIF ENGINE SEE HOT STUFFTMVIDEO-TIPS VHS CASSETTES #5 2 CLIP THIS COUPON SEND $5500 Check MO GET BOTH VHS TAPES PLUS 1 EA 2 oz HOT STUFF 2 oz SUPER T 3 oz HOT SHOT %23 FREE OFFER GOOD IN U S ONLY THRU JUNE 84 P0 BOX 836 flhj SIMI CA 93062 805 522-0062 Power Soar New Heights LT-50 Electric Motor 01 Cu equivelent gas engine displacement Send self-addressed stamped envelope catalog ap plication notes Leisure 11 Deerspring/lrvine/CA 92714 h Another photo shows latest trend Easy B designthe Swiss-type layout Actu ally Otto Rodenburg Holland flew simi lar Easy B West Baden after 1980 World Championships layout has seen ex tensive development England least proposal International class fitting layout has considered FAI nothing has adopted far last photo shows styrofoam Man hattan Cabin model built Burr Stanton Louisville KY whole racks experimental models some test flown during Indoor Week West Baden major new feature models Burr has experimenting ultra-lowdensity styrofoam Typical foam density ranges near pound per cubic foot able find some very light foam used instrument packaging hollowed-out fu selages versions simply drilled motor clearance achieved seven grams bare weight course models meet rule requiring transparent windshield windows Bud Tenny Box 545 Richardson TX 75080 FF World Champs/Cowley Continued page 63 changeable October spring weather favor important model flying event huge continent Australia disad vantaged modelers being spread thin over huge land mass As turned out surprisingly small group very dedicated enthusi asts New South Wales carried responsibility staging 1983 FE World Championships Goulburn 70 miles inland midway between Sydney Canberra Upon arrival evident done homework Accommo dations first class teams being housed week subsi dized budget rate $50 modern partially used Riverina College Eight small multi-story blocks individual rooms common sitting room floorideal team meetings Facilities included excel lent cafeteria lecture theater used timekeeper briefings symposium laundry room very necessary such sporting events gymnasium quickly commandeered Indoor enthusiasts Extras included FE Sym posium Report prepared NSWFF Society FE Plans Handbook con taining models participants nearby Victorian FE Society hosted PAl Open International flying field week before very im portant feature allowed visiting teams acclimate trim models practice Causing worry Saturdays events blown out high winds leapfrogging PlC Power FlH A-l Gilder Monday weather turned kind producing two perfect days model flying Open Interna tional US team members took six top nine places three events inevitable event known Australia atten dance record wouldnt set diffi culty travel outside own countries made appearance East ern Europe countries seem unlikely However USSR North Korea entered withdrew late date Surprisingly some expected countries didnt have competitors notably France Denmark kind competitor numbers actually attendance somewhat ex pected Actually few countries willing host event reason allow contest loca tion travelround world FAI EF global sport travel interna tional airlines relatively inexpensive easy days fact 18 coun tries represented Australia made fairly big competition site broad expanse short grassy sheep grazing land some concern about number wire fences dividing land paddocks associated risk damage models inconvenience retriev ers faced climbing area suffered five-year drought re cent rains left field dotted soggy patches newly-formed lake standing water low-lying area north Generally site acceptable nations being large enough virtually prevent loss models direction Official proceedings got underway model processing Thursday proceeded few problems Friday day Opening Cere mony college dawned cloudless bright calm took oppor tunity early-morning trimming field 20 mm away car After lunch official practice session enjoyed perfect conditions ganization facilities weather seem ingly perfect hopes high classic World Championships US team although composed al entirely fliers new World Championships good shape event FlA Glider paper probably strongest US unit Jim Bradley Dale Elder Matt Gewain first-time team members prac ticed together home Flordia weekly basis since April FiB Rub ber Steve Beebe George Schroedter joined Walt Ghio 4th consecutive World Championships event US truly World Class new US faces FlC Power Mike Ach terberg Rol Anderson Norm Poti together Team Manager Roger Simpson dominated International Power event preceding weekhope fully good sign No Need Make Christmas List Just Use Ad UNIQUE CHRISTMAS GIFT IDEAS lire Covers Tote Bags Hats quality line sportswear Designs just come aviation designs available top quality line sportswear designs direct printno heat transfer Three color B-25. r Cub. Gee Bee. P-40 Warhawks ker D VII 8. isten Eagle ts Special. Citabria. P-47 Thunderbolt arman Curtis Jenny. Corsair. Coaches ShirtS1295TShirt$6S5 Ladies TopSS5OLong Sleeve TS7CU ShortaSS95Baseball$SS5 Lined JacketS2195Foogball5S95 Tots BagS795Sweatshirt$950 Tire coverSI495Hooded SweatS1495 HatSUBS Wide choice colors sizes Send $100 new Illustrated Brochure Name Address city StateZip Size color Design now accept MasterCard & VIsa TO ORDER Send check money order Shipping S1-l5add 5150 Over $l5add 10% Maryland residents add 5% taxI Phase Art Hwy 382 Box 123L Waldorph MD 20601 301 843-3050 VEP IT SURE IS! all-time best flying plane NOW PRETTIEST Sill Wendts CESSNA AG WAGON uses simple mods convert GIANT UGLY STIK kit beauty Highly detailed full-size plans can used modify kit orcomnpletely scratch build theAG WAGON flies better original 0mm 0,5n Plior & Han, Ann6 SOav FOR QUADRA OR LARGER ENGINES FULLSIZE PLANS 104WS $25OOrr Call gemidarma Add 5% Sale Inal SEND CHECK OR MO TO TAYLORCHAFT LTD 216 Wtttaas Ave Ranenttte CA 95678 SEND LARGE vASE FOR COMPLETE I-CRAFT RROCHURES January 1984 159 ln$TireMost Sizes Available Covers $1495 IA GIANT UGLY STIK