GIANT SCALE Bob Beckman REFLECTIONS season midOctober write hopefully East will have few weeks good flying weather As organized fly-ins however season over lucky enough get four major Giant Scale fly-ins 1980 two West two East addition made Toledo April have discussions correspondence modelers over country As result have some observations opinions might worth sharing will come no surprise say 1980 year Giant Scale proved itself major part hobby trend obvious early year various trade shows Toledo example close half aircraft present 1/5-scale larger addition acessory items displayed oriented toward big birds impossible keep up fly-in activity throughout year 1979 handful fly-ins exclusively big birds plus few included along other classes 1980 seemed almost weekend Giant Scale fly-in somewhere Scale contests included category technical standpoint engines big item past year Detroit has its K-cars Giant Scale has its K-engines Kioritz two Kawasaki engines really broadened power options Giant Scale aircraft engines designed portable blower use consequently have characteristics suit applicaiton closely chainsaw derived engines hear may soon second larger 3 cu Kioritz geared-down glow engine units seem disappearing four gatherings year saw fewer prop-drives fly-in last year Fuel cost probably reason plus fact its hard justify extra complexity now gasoline burners available reli able top just doesnt feel right watch Quarter Scale Cub sounds like Pylon Racer As whats being flown well saw some trends surprised would expect West Coast modelers more-or-less year-round flying season would stand out fliers Easterners have live three- six-month building season would shine area average flying saw two eastern events superior western fly-ins greater number new innovative scratchbuilt aircraft thing really comes through loud clear Giant Scale activity concen 26 Model Aviation Bob Kirby Crawford starting series engine tests photo above gives overview test stand along some engines propellers initially available Engine mounted stand Roper37 Others Ito R Homelite 16 Kawasaki 222 Kioritz 24 Photo below detailsthe heartof program spring scale measures staticthrust ThumbTach checks rpm Fuel consumotion will also chekad Wendell Hostetlers Liberty Sport Wen dell himself front camera change Bob reviews plans model Bucker Jungmeister month trated two areas alive well throughout country building up steam another banner year 81 Engine testing effort come up answers engine-related questions get Kirby Crawford starting series engine tests intend examine engine/propeller combinations can lay hands present least con cerned gasoline burners Deliberately testing will particularly sophisticated Static thrust rpm fuel consump tion etc things average modeler can understand appreciate interested providing useful information writing fancy dissertations engine theory following engines hand promised two slightly different Homelite 16 cu conver sions Quadra Kawasaki 222 cu Kawasaki 315 cu Kioritz Roper 37 cu hope add engines list include commercially available props test stand quick-change engine mount has built mount travels nylon rollers restrained spring scale reading static thrust trusty rusty old Thumb Tach will give us reasonable idea rpm graduated horse syringe stopwatch will let us figure fuel consumption intend include things like dimensions mounting details internal construction details possible outline drawings result will published Model Aviation one- two-part article Timing isnt firm yet hope have data out time useful next seasons flying Continued page 104 February 1981 27 Giant Scalers arent ones flying chain-saw engines micro-light twin built Canadian kit powered two Canadian Pioneer saw engines has displacement 6 cu photo above look reflection covering wings leading edge TWENTY- SEVENTH ANNUAL OLLDO RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 1011 121981 FRIDAY SATURDAY SUNDAY 9 am 6 9 am 6 9am 430 pm pm pm presented WEAK SIGNALS po box 5772 R/C CLUB toledo ohio 43613 4. ..... ___ Radio Technique/Myers Continued page 21 subject hasnt covered satisfac tion let know baseline get paid writing column research testing comes result interest subject expenses come out pocket dont have interest subject pre disposes spend money isnt much chance Ill write about try month entertaining informative above accurate profession man agement Structural Test Engineering motto Get right information purpose carries over column too George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Time Machine/Ritchie Continued page 24 Smith coil used Wilco unit Its lugs provide easy method attachment well primary electrical connections Its fiber shell also oil proof though Hot-Stuffed end covers just make sure added miniature closed-circuit jack engine could started run booster bat teries independent pencells position shutoff switch Its wired booster plug interrupts circuit pencells dummy jack plug can inserted socket deactivate entire system extreme forward mounting ignition has number advantages helps balance ship allows maximum distance between placement coil receiver short length wiring necessary reach timer spark plug probably contributes reliable operation both engine radio tunately everything fits neatly beneath Clip per s nose cowl date ship has accumulated over 300 flights number different power plants various model Brown Jr Hurleman engines small collection Ive played around some different condensers capacitors prefer Just about anything between 01 01 mFd 250 600v will work electrical values dont seem too critical like best 01 mFd 400vsame originally supplied Brown Jr Most caps range polarized attention must paid plusses minuses hooking up Also caps small physical size dont last long Ive flown two different Wilco coils RUBBER STRIP FAI RUBBER 4 out 5 flyoff 1979 World Championships used FAI RUBBER Made USA SIZES % 3/16 1/8 3/32 1/16 1mm 042 thick SPOOLED GROSS WT 1% 1- LBS PRICE $1250 first spool PPD US Additional spools $1250 NEW PIRELLI SIZES 6mm 5mm 4mm X 1mm PRICE $1500 first hank PPD US Additional spools $1450 Sole US Distributor World-Wide Sales Send 25 cents 1980 Catalog ____ FAI Model Supply P0 Box 3957 Torrance CA 90510 Smith Competitor coil addition Smith Firecracker used Cavalier work about same As far spark lead resistor concerned theres no noticeable difference between 10K 12K would imagine resistance could increased until begins affect engine performance boosterbattery setup have pencell life quite good Ive replaced perhaps three four times radio may may impor tant part equation flying spark-ignition engines RC Mine five-year-old World Engines Expert Mark 7-channel 75640 MHz Ive used Worlds S-Il servos well Novak Bantam Midgets equal success Clipper 250 mAh flight battery entirely adequate full days flying Undoubtedly some makes radios maybe some individual radios same make probably susceptible ignition interference others Kraft radios particular seem have bad reputation regard yet Jack Van Dusen has flying dual-conversion Kraft receiver along really hot unshielded electronic ignition Dallaire Sportster re cently Jack way has 10K resistor spark lead too maybe thats ticket Clearly work needs done suspect spark-ignition engines probably flyable RC modelers thinkand having hire electrical engineer dream up fancy ignition system Word needs passed around what works what doesnt have old sparker youd like fly afraid losing Free Flight try RC RC Giant Scale/Beckman Continued page 27 Hostetlers super scale plans first heard Wendell Hostetler several years ago blew up Sig Skybolt Quarter Scale size Skybolt still going strong lot people have built own Wendells plans has added plans Liberty Sport Bucker Jungmeister comment below following appears instruction manual Liberty Sport very interesting note ages purchased plans first project Skybolt Almost excep tion over 40 has changed approach towards what should should included instructional manual thought beginners less experience would go Giant Scale route included Continued page 108 104 Model Aviation PLANS & CONSTR MANUAL Curtis s Hawk P6E Stinson Reliant SR9 2/4SCALE 94 ASP 52250 1/4SCALE i2BSP $2500 aSCALE 63SPAN $1250 SCALE ROSPAN 51500 IjSCALE 475/a SSi05O 25 SCALE 62 SPAN 51250 Curtiss FIIC2 Curtiss Gulfhawk IA iASCALE 545SP $3000 i/4SCALE 94SSP *3000 2SCALE 62SP $1500 2SCALE B3SP $1500 PLEASE ADD *200 FORP/N USASEND *100 WRITE FOR MAILING INFORMATION GAlA LOGE INCLUDE $100 FOR CATA LOGE 1213 HOLLY SPRING LANE GRAND BLANC MI 48439 CUSTOM TUNED ENGINESGET ORGANIZED WA TCB FOR COMPETITION CCESSORIES Here s set 4 study ties holds Os. Special GY 014 X 60 solid lines $295 ppd 4 years yoo taoorie 5 azrses MRGUSI Custom needle valves racing wheels 4 MAG FILES $495 Quick fills fuel shut-offs 8 others lBS pbs 51 50 postage wsd handieg detailed brochure send 25 cents to wwgms Kustom Kraftsmanshlp Box 2699 Laguna Hills P0 BOX 388-K CalIf 92653 Ph 714 830-5162DOVER NH 03620 amount detail first instructionThe Sigkit shows optional non-scale enlarge- summary Wendells plans well drawn manual Since majority persons purchas-ment ailerons rolland contain sufficient detail rank ing plans experienced really unnecessaryperformance never outstanding Wendellbeginner Both designs have suc go great detail However some clarifica-opted go four ailerons increase perform-cessfully flown have seen Wendell fly tion explanations may helpfulance servos drive lower wing unitsLiberty Sport smooth realistic the time written would havewith coupling struts upper wing aileronsair can certainly recommend Im agreed Im getting more questionsUnless Scale purist added flightawfully tempted Jungmeister people relative newcomers toagility far outweighs slightly non-scale appear-the time Both plans listed $2150 modeling same time newcomers willancenotes inflation may have changed usually build two kits before taking construction both planes follows usualWrite Wendell Hostetler 1041 Heatherwood step toplan building Wendells plans instruc-modeling practice some material substitu-Lane Orrville OH 44667 tions adequate anyone except absolutetions Basswood specified areas tyrois nice material work readily Bob Beckman 8248 Holly Grove Court two plans very similar waysavailable especially longer lengths SpruceManassas VA 22110 703 369-2432 comments will apply both Theycould substituted desired consist two sheets 42-in X 82-in lot balsa called out As have saidR C Aerobatics/Van Putte instruction manual manuals containbefore substitutes balsa canContinued page 29 some interesting useful information en-really cut down cost big birds gines servos flying etc addition construc-meant criticism plans sugges-chord line commonly usedand tion details particularly useful item istions want try some newdont know could 17% difference relatively complete bill materialsmethods Foam-core board available artistsin pitch flat-faced pitch say 8-in Anyone has built Sig Liberty Sportsupply stores makes beautiful wing ribs andcompared 8-in zero-lift-hue pitch Question will have feeling deja vu working withfuselage formers think could replace thewhat pitch reference does Top Flite use Zinger plans However addition expectedfull-length 3/16-in sheet balsa fuselage sidesMaster Airscrew Etc Does anyone know changes materials sizes twoThe cost difference would significant BalsaWorse yet according Bill Cassidy prop significant differences Wendell uses simpleblocks used filling shaping can often bemaker Colorado another problem effective method making tail surfacesreplaced rigid insulation foam Just keep inactual performance prop vs pitch removable can aid transportationmind foam cant take dope littlestamped hub pitch distri problem other change ailerons theHobbypoxy No 2 glue brushed onto exposedbution used manufacturer Tests have full-scale airplane has lower wing ailerons onlyfoam surface does trickshown greater efficiency attained tip FUN SCALE IS HERE Easier Fly Yet Very Maneuverable Over 20 step-by-step budding illustrations COBRA easier follow photos Lands Uke Trainer Ideal 2nd TraIner Novice 19-25 Engine 4695 19-40 Eng Span 51 ALL parts cut shapeArea 490 sq unique 0 oz wing loadingCan Built Flown 7 Dayswrite free Catalog ellusinates dihedral hraces3Y4-4 lbsDue New Construction Techniques JEMCO wing heeling Upright Engine 1305 Foothill Dr Vista CA 92083 Deslgaed Iron-on coveringsWILL FLY AS SLOW AS PIPER CUB MODEL714 724-3242 108 Model Aviation MASTER AIRSCREW PRESENTS BALSA STRIPPER 495 AT YOUR DEALER PRECISION STRIP WOOD TO x INS FROM BALSA SHEET ALSO FOR DRAFTING AND PHOTO MATS USES TYPE II BLADE SUPER TOOL T PRICE WINDSOR PROPELLER CO PO BOX 112 WINDSOR CA 95492
Edition: Model Aviation - 1981/02
Page Numbers: 26, 27, 104, 108
GIANT SCALE Bob Beckman REFLECTIONS season midOctober write hopefully East will have few weeks good flying weather As organized fly-ins however season over lucky enough get four major Giant Scale fly-ins 1980 two West two East addition made Toledo April have discussions correspondence modelers over country As result have some observations opinions might worth sharing will come no surprise say 1980 year Giant Scale proved itself major part hobby trend obvious early year various trade shows Toledo example close half aircraft present 1/5-scale larger addition acessory items displayed oriented toward big birds impossible keep up fly-in activity throughout year 1979 handful fly-ins exclusively big birds plus few included along other classes 1980 seemed almost weekend Giant Scale fly-in somewhere Scale contests included category technical standpoint engines big item past year Detroit has its K-cars Giant Scale has its K-engines Kioritz two Kawasaki engines really broadened power options Giant Scale aircraft engines designed portable blower use consequently have characteristics suit applicaiton closely chainsaw derived engines hear may soon second larger 3 cu Kioritz geared-down glow engine units seem disappearing four gatherings year saw fewer prop-drives fly-in last year Fuel cost probably reason plus fact its hard justify extra complexity now gasoline burners available reli able top just doesnt feel right watch Quarter Scale Cub sounds like Pylon Racer As whats being flown well saw some trends surprised would expect West Coast modelers more-or-less year-round flying season would stand out fliers Easterners have live three- six-month building season would shine area average flying saw two eastern events superior western fly-ins greater number new innovative scratchbuilt aircraft thing really comes through loud clear Giant Scale activity concen 26 Model Aviation Bob Kirby Crawford starting series engine tests photo above gives overview test stand along some engines propellers initially available Engine mounted stand Roper37 Others Ito R Homelite 16 Kawasaki 222 Kioritz 24 Photo below detailsthe heartof program spring scale measures staticthrust ThumbTach checks rpm Fuel consumotion will also chekad Wendell Hostetlers Liberty Sport Wen dell himself front camera change Bob reviews plans model Bucker Jungmeister month trated two areas alive well throughout country building up steam another banner year 81 Engine testing effort come up answers engine-related questions get Kirby Crawford starting series engine tests intend examine engine/propeller combinations can lay hands present least con cerned gasoline burners Deliberately testing will particularly sophisticated Static thrust rpm fuel consump tion etc things average modeler can understand appreciate interested providing useful information writing fancy dissertations engine theory following engines hand promised two slightly different Homelite 16 cu conver sions Quadra Kawasaki 222 cu Kawasaki 315 cu Kioritz Roper 37 cu hope add engines list include commercially available props test stand quick-change engine mount has built mount travels nylon rollers restrained spring scale reading static thrust trusty rusty old Thumb Tach will give us reasonable idea rpm graduated horse syringe stopwatch will let us figure fuel consumption intend include things like dimensions mounting details internal construction details possible outline drawings result will published Model Aviation one- two-part article Timing isnt firm yet hope have data out time useful next seasons flying Continued page 104 February 1981 27 Giant Scalers arent ones flying chain-saw engines micro-light twin built Canadian kit powered two Canadian Pioneer saw engines has displacement 6 cu photo above look reflection covering wings leading edge TWENTY- SEVENTH ANNUAL OLLDO RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 1011 121981 FRIDAY SATURDAY SUNDAY 9 am 6 9 am 6 9am 430 pm pm pm presented WEAK SIGNALS po box 5772 R/C CLUB toledo ohio 43613 4. ..... ___ Radio Technique/Myers Continued page 21 subject hasnt covered satisfac tion let know baseline get paid writing column research testing comes result interest subject expenses come out pocket dont have interest subject pre disposes spend money isnt much chance Ill write about try month entertaining informative above accurate profession man agement Structural Test Engineering motto Get right information purpose carries over column too George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Time Machine/Ritchie Continued page 24 Smith coil used Wilco unit Its lugs provide easy method attachment well primary electrical connections Its fiber shell also oil proof though Hot-Stuffed end covers just make sure added miniature closed-circuit jack engine could started run booster bat teries independent pencells position shutoff switch Its wired booster plug interrupts circuit pencells dummy jack plug can inserted socket deactivate entire system extreme forward mounting ignition has number advantages helps balance ship allows maximum distance between placement coil receiver short length wiring necessary reach timer spark plug probably contributes reliable operation both engine radio tunately everything fits neatly beneath Clip per s nose cowl date ship has accumulated over 300 flights number different power plants various model Brown Jr Hurleman engines small collection Ive played around some different condensers capacitors prefer Just about anything between 01 01 mFd 250 600v will work electrical values dont seem too critical like best 01 mFd 400vsame originally supplied Brown Jr Most caps range polarized attention must paid plusses minuses hooking up Also caps small physical size dont last long Ive flown two different Wilco coils RUBBER STRIP FAI RUBBER 4 out 5 flyoff 1979 World Championships used FAI RUBBER Made USA SIZES % 3/16 1/8 3/32 1/16 1mm 042 thick SPOOLED GROSS WT 1% 1- LBS PRICE $1250 first spool PPD US Additional spools $1250 NEW PIRELLI SIZES 6mm 5mm 4mm X 1mm PRICE $1500 first hank PPD US Additional spools $1450 Sole US Distributor World-Wide Sales Send 25 cents 1980 Catalog ____ FAI Model Supply P0 Box 3957 Torrance CA 90510 Smith Competitor coil addition Smith Firecracker used Cavalier work about same As far spark lead resistor concerned theres no noticeable difference between 10K 12K would imagine resistance could increased until begins affect engine performance boosterbattery setup have pencell life quite good Ive replaced perhaps three four times radio may may impor tant part equation flying spark-ignition engines RC Mine five-year-old World Engines Expert Mark 7-channel 75640 MHz Ive used Worlds S-Il servos well Novak Bantam Midgets equal success Clipper 250 mAh flight battery entirely adequate full days flying Undoubtedly some makes radios maybe some individual radios same make probably susceptible ignition interference others Kraft radios particular seem have bad reputation regard yet Jack Van Dusen has flying dual-conversion Kraft receiver along really hot unshielded electronic ignition Dallaire Sportster re cently Jack way has 10K resistor spark lead too maybe thats ticket Clearly work needs done suspect spark-ignition engines probably flyable RC modelers thinkand having hire electrical engineer dream up fancy ignition system Word needs passed around what works what doesnt have old sparker youd like fly afraid losing Free Flight try RC RC Giant Scale/Beckman Continued page 27 Hostetlers super scale plans first heard Wendell Hostetler several years ago blew up Sig Skybolt Quarter Scale size Skybolt still going strong lot people have built own Wendells plans has added plans Liberty Sport Bucker Jungmeister comment below following appears instruction manual Liberty Sport very interesting note ages purchased plans first project Skybolt Almost excep tion over 40 has changed approach towards what should should included instructional manual thought beginners less experience would go Giant Scale route included Continued page 108 104 Model Aviation PLANS & CONSTR MANUAL Curtis s Hawk P6E Stinson Reliant SR9 2/4SCALE 94 ASP 52250 1/4SCALE i2BSP $2500 aSCALE 63SPAN $1250 SCALE ROSPAN 51500 IjSCALE 475/a SSi05O 25 SCALE 62 SPAN 51250 Curtiss FIIC2 Curtiss Gulfhawk IA iASCALE 545SP $3000 i/4SCALE 94SSP *3000 2SCALE 62SP $1500 2SCALE B3SP $1500 PLEASE ADD *200 FORP/N USASEND *100 WRITE FOR MAILING INFORMATION GAlA LOGE INCLUDE $100 FOR CATA LOGE 1213 HOLLY SPRING LANE GRAND BLANC MI 48439 CUSTOM TUNED ENGINESGET ORGANIZED WA TCB FOR COMPETITION CCESSORIES Here s set 4 study ties holds Os. Special GY 014 X 60 solid lines $295 ppd 4 years yoo taoorie 5 azrses MRGUSI Custom needle valves racing wheels 4 MAG FILES $495 Quick fills fuel shut-offs 8 others lBS pbs 51 50 postage wsd handieg detailed brochure send 25 cents to wwgms Kustom Kraftsmanshlp Box 2699 Laguna Hills P0 BOX 388-K CalIf 92653 Ph 714 830-5162DOVER NH 03620 amount detail first instructionThe Sigkit shows optional non-scale enlarge- summary Wendells plans well drawn manual Since majority persons purchas-ment ailerons rolland contain sufficient detail rank ing plans experienced really unnecessaryperformance never outstanding Wendellbeginner Both designs have suc go great detail However some clarifica-opted go four ailerons increase perform-cessfully flown have seen Wendell fly tion explanations may helpfulance servos drive lower wing unitsLiberty Sport smooth realistic the time written would havewith coupling struts upper wing aileronsair can certainly recommend Im agreed Im getting more questionsUnless Scale purist added flightawfully tempted Jungmeister people relative newcomers toagility far outweighs slightly non-scale appear-the time Both plans listed $2150 modeling same time newcomers willancenotes inflation may have changed usually build two kits before taking construction both planes follows usualWrite Wendell Hostetler 1041 Heatherwood step toplan building Wendells plans instruc-modeling practice some material substitu-Lane Orrville OH 44667 tions adequate anyone except absolutetions Basswood specified areas tyrois nice material work readily Bob Beckman 8248 Holly Grove Court two plans very similar waysavailable especially longer lengths SpruceManassas VA 22110 703 369-2432 comments will apply both Theycould substituted desired consist two sheets 42-in X 82-in lot balsa called out As have saidR C Aerobatics/Van Putte instruction manual manuals containbefore substitutes balsa canContinued page 29 some interesting useful information en-really cut down cost big birds gines servos flying etc addition construc-meant criticism plans sugges-chord line commonly usedand tion details particularly useful item istions want try some newdont know could 17% difference relatively complete bill materialsmethods Foam-core board available artistsin pitch flat-faced pitch say 8-in Anyone has built Sig Liberty Sportsupply stores makes beautiful wing ribs andcompared 8-in zero-lift-hue pitch Question will have feeling deja vu working withfuselage formers think could replace thewhat pitch reference does Top Flite use Zinger plans However addition expectedfull-length 3/16-in sheet balsa fuselage sidesMaster Airscrew Etc Does anyone know changes materials sizes twoThe cost difference would significant BalsaWorse yet according Bill Cassidy prop significant differences Wendell uses simpleblocks used filling shaping can often bemaker Colorado another problem effective method making tail surfacesreplaced rigid insulation foam Just keep inactual performance prop vs pitch removable can aid transportationmind foam cant take dope littlestamped hub pitch distri problem other change ailerons theHobbypoxy No 2 glue brushed onto exposedbution used manufacturer Tests have full-scale airplane has lower wing ailerons onlyfoam surface does trickshown greater efficiency attained tip FUN SCALE IS HERE Easier Fly Yet Very Maneuverable Over 20 step-by-step budding illustrations COBRA easier follow photos Lands Uke Trainer Ideal 2nd TraIner Novice 19-25 Engine 4695 19-40 Eng Span 51 ALL parts cut shapeArea 490 sq unique 0 oz wing loadingCan Built Flown 7 Dayswrite free Catalog ellusinates dihedral hraces3Y4-4 lbsDue New Construction Techniques JEMCO wing heeling Upright Engine 1305 Foothill Dr Vista CA 92083 Deslgaed Iron-on coveringsWILL FLY AS SLOW AS PIPER CUB MODEL714 724-3242 108 Model Aviation MASTER AIRSCREW PRESENTS BALSA STRIPPER 495 AT YOUR DEALER PRECISION STRIP WOOD TO x INS FROM BALSA SHEET ALSO FOR DRAFTING AND PHOTO MATS USES TYPE II BLADE SUPER TOOL T PRICE WINDSOR PROPELLER CO PO BOX 112 WINDSOR CA 95492
Edition: Model Aviation - 1981/02
Page Numbers: 26, 27, 104, 108
GIANT SCALE Bob Beckman REFLECTIONS season midOctober write hopefully East will have few weeks good flying weather As organized fly-ins however season over lucky enough get four major Giant Scale fly-ins 1980 two West two East addition made Toledo April have discussions correspondence modelers over country As result have some observations opinions might worth sharing will come no surprise say 1980 year Giant Scale proved itself major part hobby trend obvious early year various trade shows Toledo example close half aircraft present 1/5-scale larger addition acessory items displayed oriented toward big birds impossible keep up fly-in activity throughout year 1979 handful fly-ins exclusively big birds plus few included along other classes 1980 seemed almost weekend Giant Scale fly-in somewhere Scale contests included category technical standpoint engines big item past year Detroit has its K-cars Giant Scale has its K-engines Kioritz two Kawasaki engines really broadened power options Giant Scale aircraft engines designed portable blower use consequently have characteristics suit applicaiton closely chainsaw derived engines hear may soon second larger 3 cu Kioritz geared-down glow engine units seem disappearing four gatherings year saw fewer prop-drives fly-in last year Fuel cost probably reason plus fact its hard justify extra complexity now gasoline burners available reli able top just doesnt feel right watch Quarter Scale Cub sounds like Pylon Racer As whats being flown well saw some trends surprised would expect West Coast modelers more-or-less year-round flying season would stand out fliers Easterners have live three- six-month building season would shine area average flying saw two eastern events superior western fly-ins greater number new innovative scratchbuilt aircraft thing really comes through loud clear Giant Scale activity concen 26 Model Aviation Bob Kirby Crawford starting series engine tests photo above gives overview test stand along some engines propellers initially available Engine mounted stand Roper37 Others Ito R Homelite 16 Kawasaki 222 Kioritz 24 Photo below detailsthe heartof program spring scale measures staticthrust ThumbTach checks rpm Fuel consumotion will also chekad Wendell Hostetlers Liberty Sport Wen dell himself front camera change Bob reviews plans model Bucker Jungmeister month trated two areas alive well throughout country building up steam another banner year 81 Engine testing effort come up answers engine-related questions get Kirby Crawford starting series engine tests intend examine engine/propeller combinations can lay hands present least con cerned gasoline burners Deliberately testing will particularly sophisticated Static thrust rpm fuel consump tion etc things average modeler can understand appreciate interested providing useful information writing fancy dissertations engine theory following engines hand promised two slightly different Homelite 16 cu conver sions Quadra Kawasaki 222 cu Kawasaki 315 cu Kioritz Roper 37 cu hope add engines list include commercially available props test stand quick-change engine mount has built mount travels nylon rollers restrained spring scale reading static thrust trusty rusty old Thumb Tach will give us reasonable idea rpm graduated horse syringe stopwatch will let us figure fuel consumption intend include things like dimensions mounting details internal construction details possible outline drawings result will published Model Aviation one- two-part article Timing isnt firm yet hope have data out time useful next seasons flying Continued page 104 February 1981 27 Giant Scalers arent ones flying chain-saw engines micro-light twin built Canadian kit powered two Canadian Pioneer saw engines has displacement 6 cu photo above look reflection covering wings leading edge TWENTY- SEVENTH ANNUAL OLLDO RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 1011 121981 FRIDAY SATURDAY SUNDAY 9 am 6 9 am 6 9am 430 pm pm pm presented WEAK SIGNALS po box 5772 R/C CLUB toledo ohio 43613 4. ..... ___ Radio Technique/Myers Continued page 21 subject hasnt covered satisfac tion let know baseline get paid writing column research testing comes result interest subject expenses come out pocket dont have interest subject pre disposes spend money isnt much chance Ill write about try month entertaining informative above accurate profession man agement Structural Test Engineering motto Get right information purpose carries over column too George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Time Machine/Ritchie Continued page 24 Smith coil used Wilco unit Its lugs provide easy method attachment well primary electrical connections Its fiber shell also oil proof though Hot-Stuffed end covers just make sure added miniature closed-circuit jack engine could started run booster bat teries independent pencells position shutoff switch Its wired booster plug interrupts circuit pencells dummy jack plug can inserted socket deactivate entire system extreme forward mounting ignition has number advantages helps balance ship allows maximum distance between placement coil receiver short length wiring necessary reach timer spark plug probably contributes reliable operation both engine radio tunately everything fits neatly beneath Clip per s nose cowl date ship has accumulated over 300 flights number different power plants various model Brown Jr Hurleman engines small collection Ive played around some different condensers capacitors prefer Just about anything between 01 01 mFd 250 600v will work electrical values dont seem too critical like best 01 mFd 400vsame originally supplied Brown Jr Most caps range polarized attention must paid plusses minuses hooking up Also caps small physical size dont last long Ive flown two different Wilco coils RUBBER STRIP FAI RUBBER 4 out 5 flyoff 1979 World Championships used FAI RUBBER Made USA SIZES % 3/16 1/8 3/32 1/16 1mm 042 thick SPOOLED GROSS WT 1% 1- LBS PRICE $1250 first spool PPD US Additional spools $1250 NEW PIRELLI SIZES 6mm 5mm 4mm X 1mm PRICE $1500 first hank PPD US Additional spools $1450 Sole US Distributor World-Wide Sales Send 25 cents 1980 Catalog ____ FAI Model Supply P0 Box 3957 Torrance CA 90510 Smith Competitor coil addition Smith Firecracker used Cavalier work about same As far spark lead resistor concerned theres no noticeable difference between 10K 12K would imagine resistance could increased until begins affect engine performance boosterbattery setup have pencell life quite good Ive replaced perhaps three four times radio may may impor tant part equation flying spark-ignition engines RC Mine five-year-old World Engines Expert Mark 7-channel 75640 MHz Ive used Worlds S-Il servos well Novak Bantam Midgets equal success Clipper 250 mAh flight battery entirely adequate full days flying Undoubtedly some makes radios maybe some individual radios same make probably susceptible ignition interference others Kraft radios particular seem have bad reputation regard yet Jack Van Dusen has flying dual-conversion Kraft receiver along really hot unshielded electronic ignition Dallaire Sportster re cently Jack way has 10K resistor spark lead too maybe thats ticket Clearly work needs done suspect spark-ignition engines probably flyable RC modelers thinkand having hire electrical engineer dream up fancy ignition system Word needs passed around what works what doesnt have old sparker youd like fly afraid losing Free Flight try RC RC Giant Scale/Beckman Continued page 27 Hostetlers super scale plans first heard Wendell Hostetler several years ago blew up Sig Skybolt Quarter Scale size Skybolt still going strong lot people have built own Wendells plans has added plans Liberty Sport Bucker Jungmeister comment below following appears instruction manual Liberty Sport very interesting note ages purchased plans first project Skybolt Almost excep tion over 40 has changed approach towards what should should included instructional manual thought beginners less experience would go Giant Scale route included Continued page 108 104 Model Aviation PLANS & CONSTR MANUAL Curtis s Hawk P6E Stinson Reliant SR9 2/4SCALE 94 ASP 52250 1/4SCALE i2BSP $2500 aSCALE 63SPAN $1250 SCALE ROSPAN 51500 IjSCALE 475/a SSi05O 25 SCALE 62 SPAN 51250 Curtiss FIIC2 Curtiss Gulfhawk IA iASCALE 545SP $3000 i/4SCALE 94SSP *3000 2SCALE 62SP $1500 2SCALE B3SP $1500 PLEASE ADD *200 FORP/N USASEND *100 WRITE FOR MAILING INFORMATION GAlA LOGE INCLUDE $100 FOR CATA LOGE 1213 HOLLY SPRING LANE GRAND BLANC MI 48439 CUSTOM TUNED ENGINESGET ORGANIZED WA TCB FOR COMPETITION CCESSORIES Here s set 4 study ties holds Os. Special GY 014 X 60 solid lines $295 ppd 4 years yoo taoorie 5 azrses MRGUSI Custom needle valves racing wheels 4 MAG FILES $495 Quick fills fuel shut-offs 8 others lBS pbs 51 50 postage wsd handieg detailed brochure send 25 cents to wwgms Kustom Kraftsmanshlp Box 2699 Laguna Hills P0 BOX 388-K CalIf 92653 Ph 714 830-5162DOVER NH 03620 amount detail first instructionThe Sigkit shows optional non-scale enlarge- summary Wendells plans well drawn manual Since majority persons purchas-ment ailerons rolland contain sufficient detail rank ing plans experienced really unnecessaryperformance never outstanding Wendellbeginner Both designs have suc go great detail However some clarifica-opted go four ailerons increase perform-cessfully flown have seen Wendell fly tion explanations may helpfulance servos drive lower wing unitsLiberty Sport smooth realistic the time written would havewith coupling struts upper wing aileronsair can certainly recommend Im agreed Im getting more questionsUnless Scale purist added flightawfully tempted Jungmeister people relative newcomers toagility far outweighs slightly non-scale appear-the time Both plans listed $2150 modeling same time newcomers willancenotes inflation may have changed usually build two kits before taking construction both planes follows usualWrite Wendell Hostetler 1041 Heatherwood step toplan building Wendells plans instruc-modeling practice some material substitu-Lane Orrville OH 44667 tions adequate anyone except absolutetions Basswood specified areas tyrois nice material work readily Bob Beckman 8248 Holly Grove Court two plans very similar waysavailable especially longer lengths SpruceManassas VA 22110 703 369-2432 comments will apply both Theycould substituted desired consist two sheets 42-in X 82-in lot balsa called out As have saidR C Aerobatics/Van Putte instruction manual manuals containbefore substitutes balsa canContinued page 29 some interesting useful information en-really cut down cost big birds gines servos flying etc addition construc-meant criticism plans sugges-chord line commonly usedand tion details particularly useful item istions want try some newdont know could 17% difference relatively complete bill materialsmethods Foam-core board available artistsin pitch flat-faced pitch say 8-in Anyone has built Sig Liberty Sportsupply stores makes beautiful wing ribs andcompared 8-in zero-lift-hue pitch Question will have feeling deja vu working withfuselage formers think could replace thewhat pitch reference does Top Flite use Zinger plans However addition expectedfull-length 3/16-in sheet balsa fuselage sidesMaster Airscrew Etc Does anyone know changes materials sizes twoThe cost difference would significant BalsaWorse yet according Bill Cassidy prop significant differences Wendell uses simpleblocks used filling shaping can often bemaker Colorado another problem effective method making tail surfacesreplaced rigid insulation foam Just keep inactual performance prop vs pitch removable can aid transportationmind foam cant take dope littlestamped hub pitch distri problem other change ailerons theHobbypoxy No 2 glue brushed onto exposedbution used manufacturer Tests have full-scale airplane has lower wing ailerons onlyfoam surface does trickshown greater efficiency attained tip FUN SCALE IS HERE Easier Fly Yet Very Maneuverable Over 20 step-by-step budding illustrations COBRA easier follow photos Lands Uke Trainer Ideal 2nd TraIner Novice 19-25 Engine 4695 19-40 Eng Span 51 ALL parts cut shapeArea 490 sq unique 0 oz wing loadingCan Built Flown 7 Dayswrite free Catalog ellusinates dihedral hraces3Y4-4 lbsDue New Construction Techniques JEMCO wing heeling Upright Engine 1305 Foothill Dr Vista CA 92083 Deslgaed Iron-on coveringsWILL FLY AS SLOW AS PIPER CUB MODEL714 724-3242 108 Model Aviation MASTER AIRSCREW PRESENTS BALSA STRIPPER 495 AT YOUR DEALER PRECISION STRIP WOOD TO x INS FROM BALSA SHEET ALSO FOR DRAFTING AND PHOTO MATS USES TYPE II BLADE SUPER TOOL T PRICE WINDSOR PROPELLER CO PO BOX 112 WINDSOR CA 95492
Edition: Model Aviation - 1981/02
Page Numbers: 26, 27, 104, 108
GIANT SCALE Bob Beckman REFLECTIONS season midOctober write hopefully East will have few weeks good flying weather As organized fly-ins however season over lucky enough get four major Giant Scale fly-ins 1980 two West two East addition made Toledo April have discussions correspondence modelers over country As result have some observations opinions might worth sharing will come no surprise say 1980 year Giant Scale proved itself major part hobby trend obvious early year various trade shows Toledo example close half aircraft present 1/5-scale larger addition acessory items displayed oriented toward big birds impossible keep up fly-in activity throughout year 1979 handful fly-ins exclusively big birds plus few included along other classes 1980 seemed almost weekend Giant Scale fly-in somewhere Scale contests included category technical standpoint engines big item past year Detroit has its K-cars Giant Scale has its K-engines Kioritz two Kawasaki engines really broadened power options Giant Scale aircraft engines designed portable blower use consequently have characteristics suit applicaiton closely chainsaw derived engines hear may soon second larger 3 cu Kioritz geared-down glow engine units seem disappearing four gatherings year saw fewer prop-drives fly-in last year Fuel cost probably reason plus fact its hard justify extra complexity now gasoline burners available reli able top just doesnt feel right watch Quarter Scale Cub sounds like Pylon Racer As whats being flown well saw some trends surprised would expect West Coast modelers more-or-less year-round flying season would stand out fliers Easterners have live three- six-month building season would shine area average flying saw two eastern events superior western fly-ins greater number new innovative scratchbuilt aircraft thing really comes through loud clear Giant Scale activity concen 26 Model Aviation Bob Kirby Crawford starting series engine tests photo above gives overview test stand along some engines propellers initially available Engine mounted stand Roper37 Others Ito R Homelite 16 Kawasaki 222 Kioritz 24 Photo below detailsthe heartof program spring scale measures staticthrust ThumbTach checks rpm Fuel consumotion will also chekad Wendell Hostetlers Liberty Sport Wen dell himself front camera change Bob reviews plans model Bucker Jungmeister month trated two areas alive well throughout country building up steam another banner year 81 Engine testing effort come up answers engine-related questions get Kirby Crawford starting series engine tests intend examine engine/propeller combinations can lay hands present least con cerned gasoline burners Deliberately testing will particularly sophisticated Static thrust rpm fuel consump tion etc things average modeler can understand appreciate interested providing useful information writing fancy dissertations engine theory following engines hand promised two slightly different Homelite 16 cu conver sions Quadra Kawasaki 222 cu Kawasaki 315 cu Kioritz Roper 37 cu hope add engines list include commercially available props test stand quick-change engine mount has built mount travels nylon rollers restrained spring scale reading static thrust trusty rusty old Thumb Tach will give us reasonable idea rpm graduated horse syringe stopwatch will let us figure fuel consumption intend include things like dimensions mounting details internal construction details possible outline drawings result will published Model Aviation one- two-part article Timing isnt firm yet hope have data out time useful next seasons flying Continued page 104 February 1981 27 Giant Scalers arent ones flying chain-saw engines micro-light twin built Canadian kit powered two Canadian Pioneer saw engines has displacement 6 cu photo above look reflection covering wings leading edge TWENTY- SEVENTH ANNUAL OLLDO RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 1011 121981 FRIDAY SATURDAY SUNDAY 9 am 6 9 am 6 9am 430 pm pm pm presented WEAK SIGNALS po box 5772 R/C CLUB toledo ohio 43613 4. ..... ___ Radio Technique/Myers Continued page 21 subject hasnt covered satisfac tion let know baseline get paid writing column research testing comes result interest subject expenses come out pocket dont have interest subject pre disposes spend money isnt much chance Ill write about try month entertaining informative above accurate profession man agement Structural Test Engineering motto Get right information purpose carries over column too George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Time Machine/Ritchie Continued page 24 Smith coil used Wilco unit Its lugs provide easy method attachment well primary electrical connections Its fiber shell also oil proof though Hot-Stuffed end covers just make sure added miniature closed-circuit jack engine could started run booster bat teries independent pencells position shutoff switch Its wired booster plug interrupts circuit pencells dummy jack plug can inserted socket deactivate entire system extreme forward mounting ignition has number advantages helps balance ship allows maximum distance between placement coil receiver short length wiring necessary reach timer spark plug probably contributes reliable operation both engine radio tunately everything fits neatly beneath Clip per s nose cowl date ship has accumulated over 300 flights number different power plants various model Brown Jr Hurleman engines small collection Ive played around some different condensers capacitors prefer Just about anything between 01 01 mFd 250 600v will work electrical values dont seem too critical like best 01 mFd 400vsame originally supplied Brown Jr Most caps range polarized attention must paid plusses minuses hooking up Also caps small physical size dont last long Ive flown two different Wilco coils RUBBER STRIP FAI RUBBER 4 out 5 flyoff 1979 World Championships used FAI RUBBER Made USA SIZES % 3/16 1/8 3/32 1/16 1mm 042 thick SPOOLED GROSS WT 1% 1- LBS PRICE $1250 first spool PPD US Additional spools $1250 NEW PIRELLI SIZES 6mm 5mm 4mm X 1mm PRICE $1500 first hank PPD US Additional spools $1450 Sole US Distributor World-Wide Sales Send 25 cents 1980 Catalog ____ FAI Model Supply P0 Box 3957 Torrance CA 90510 Smith Competitor coil addition Smith Firecracker used Cavalier work about same As far spark lead resistor concerned theres no noticeable difference between 10K 12K would imagine resistance could increased until begins affect engine performance boosterbattery setup have pencell life quite good Ive replaced perhaps three four times radio may may impor tant part equation flying spark-ignition engines RC Mine five-year-old World Engines Expert Mark 7-channel 75640 MHz Ive used Worlds S-Il servos well Novak Bantam Midgets equal success Clipper 250 mAh flight battery entirely adequate full days flying Undoubtedly some makes radios maybe some individual radios same make probably susceptible ignition interference others Kraft radios particular seem have bad reputation regard yet Jack Van Dusen has flying dual-conversion Kraft receiver along really hot unshielded electronic ignition Dallaire Sportster re cently Jack way has 10K resistor spark lead too maybe thats ticket Clearly work needs done suspect spark-ignition engines probably flyable RC modelers thinkand having hire electrical engineer dream up fancy ignition system Word needs passed around what works what doesnt have old sparker youd like fly afraid losing Free Flight try RC RC Giant Scale/Beckman Continued page 27 Hostetlers super scale plans first heard Wendell Hostetler several years ago blew up Sig Skybolt Quarter Scale size Skybolt still going strong lot people have built own Wendells plans has added plans Liberty Sport Bucker Jungmeister comment below following appears instruction manual Liberty Sport very interesting note ages purchased plans first project Skybolt Almost excep tion over 40 has changed approach towards what should should included instructional manual thought beginners less experience would go Giant Scale route included Continued page 108 104 Model Aviation PLANS & CONSTR MANUAL Curtis s Hawk P6E Stinson Reliant SR9 2/4SCALE 94 ASP 52250 1/4SCALE i2BSP $2500 aSCALE 63SPAN $1250 SCALE ROSPAN 51500 IjSCALE 475/a SSi05O 25 SCALE 62 SPAN 51250 Curtiss FIIC2 Curtiss Gulfhawk IA iASCALE 545SP $3000 i/4SCALE 94SSP *3000 2SCALE 62SP $1500 2SCALE B3SP $1500 PLEASE ADD *200 FORP/N USASEND *100 WRITE FOR MAILING INFORMATION GAlA LOGE INCLUDE $100 FOR CATA LOGE 1213 HOLLY SPRING LANE GRAND BLANC MI 48439 CUSTOM TUNED ENGINESGET ORGANIZED WA TCB FOR COMPETITION CCESSORIES Here s set 4 study ties holds Os. Special GY 014 X 60 solid lines $295 ppd 4 years yoo taoorie 5 azrses MRGUSI Custom needle valves racing wheels 4 MAG FILES $495 Quick fills fuel shut-offs 8 others lBS pbs 51 50 postage wsd handieg detailed brochure send 25 cents to wwgms Kustom Kraftsmanshlp Box 2699 Laguna Hills P0 BOX 388-K CalIf 92653 Ph 714 830-5162DOVER NH 03620 amount detail first instructionThe Sigkit shows optional non-scale enlarge- summary Wendells plans well drawn manual Since majority persons purchas-ment ailerons rolland contain sufficient detail rank ing plans experienced really unnecessaryperformance never outstanding Wendellbeginner Both designs have suc go great detail However some clarifica-opted go four ailerons increase perform-cessfully flown have seen Wendell fly tion explanations may helpfulance servos drive lower wing unitsLiberty Sport smooth realistic the time written would havewith coupling struts upper wing aileronsair can certainly recommend Im agreed Im getting more questionsUnless Scale purist added flightawfully tempted Jungmeister people relative newcomers toagility far outweighs slightly non-scale appear-the time Both plans listed $2150 modeling same time newcomers willancenotes inflation may have changed usually build two kits before taking construction both planes follows usualWrite Wendell Hostetler 1041 Heatherwood step toplan building Wendells plans instruc-modeling practice some material substitu-Lane Orrville OH 44667 tions adequate anyone except absolutetions Basswood specified areas tyrois nice material work readily Bob Beckman 8248 Holly Grove Court two plans very similar waysavailable especially longer lengths SpruceManassas VA 22110 703 369-2432 comments will apply both Theycould substituted desired consist two sheets 42-in X 82-in lot balsa called out As have saidR C Aerobatics/Van Putte instruction manual manuals containbefore substitutes balsa canContinued page 29 some interesting useful information en-really cut down cost big birds gines servos flying etc addition construc-meant criticism plans sugges-chord line commonly usedand tion details particularly useful item istions want try some newdont know could 17% difference relatively complete bill materialsmethods Foam-core board available artistsin pitch flat-faced pitch say 8-in Anyone has built Sig Liberty Sportsupply stores makes beautiful wing ribs andcompared 8-in zero-lift-hue pitch Question will have feeling deja vu working withfuselage formers think could replace thewhat pitch reference does Top Flite use Zinger plans However addition expectedfull-length 3/16-in sheet balsa fuselage sidesMaster Airscrew Etc Does anyone know changes materials sizes twoThe cost difference would significant BalsaWorse yet according Bill Cassidy prop significant differences Wendell uses simpleblocks used filling shaping can often bemaker Colorado another problem effective method making tail surfacesreplaced rigid insulation foam Just keep inactual performance prop vs pitch removable can aid transportationmind foam cant take dope littlestamped hub pitch distri problem other change ailerons theHobbypoxy No 2 glue brushed onto exposedbution used manufacturer Tests have full-scale airplane has lower wing ailerons onlyfoam surface does trickshown greater efficiency attained tip FUN SCALE IS HERE Easier Fly Yet Very Maneuverable Over 20 step-by-step budding illustrations COBRA easier follow photos Lands Uke Trainer Ideal 2nd TraIner Novice 19-25 Engine 4695 19-40 Eng Span 51 ALL parts cut shapeArea 490 sq unique 0 oz wing loadingCan Built Flown 7 Dayswrite free Catalog ellusinates dihedral hraces3Y4-4 lbsDue New Construction Techniques JEMCO wing heeling Upright Engine 1305 Foothill Dr Vista CA 92083 Deslgaed Iron-on coveringsWILL FLY AS SLOW AS PIPER CUB MODEL714 724-3242 108 Model Aviation MASTER AIRSCREW PRESENTS BALSA STRIPPER 495 AT YOUR DEALER PRECISION STRIP WOOD TO x INS FROM BALSA SHEET ALSO FOR DRAFTING AND PHOTO MATS USES TYPE II BLADE SUPER TOOL T PRICE WINDSOR PROPELLER CO PO BOX 112 WINDSOR CA 95492