C GIANT SCALE Bob Beckman KAWASAKI engines Last August Mam moth Scale Fly-in Morgan Hill Bob Seigelkoff C B Associates showed new engine working made Kawasaki use believe weed whip engine about 13 Cu displacement looked very well made Bob fitted prop adapter spinner planning try plane twisted arm often degrees until promised let know worked out Unfortunately first engine wasnt really useable process Bob found two other engines quite useable 36cc 222 cu other 51cc 315 cu photos smaller two Kawasaki TA-36 TA-SI identical except size C B Associates modifications include prop adapter radial motor mount replacement original carburetor Walbro Tillotson pump type carb engines feature electronic ignition run 50 mix regular gas oil reports have heard far say engines very easy start cold TA-36 rated 23 hp 7500 rpm TA-S 1 31 hp 7000 rpm C B Associates data sheet engines lists static thrust variety props figures apparently conservative side since show 19 lb TA-36 20-8 prop Bob Morse reports 24 lb engine same size make prop will test running engine soon will pass what learn above written early April meant July column however decided cover Toledo July issue skip regular column month As result now have info available thing can see photos Ive chance tear TA-36s down look innards pictures cant begin convey feel quality about engine die castings crisp clean machined surfaces excellent exception domed top piston looks has deliberately left slightly rough cant imagine Although havent chance run engine yet have seen some others running reported last month 315 cu engine Bob Hutton EWH running Toledo addition saw first flights Cecil Ramseys Big Stik 22 cu engine Cecil flies Charles County MD club flew Big Stik last year Evra pulled Evra off bolted Kawasaki put 35 oz lead tail balance made no other changes Incidentally trying out different engines plane snap everything hanging out breeze can get easily couple months ago commented didnt want Uglier Stik myself someone else might leam something would useful issue just come out week before flying session Talk about timing Cecil ran engine ground bit vibration level speeds quite low first flight cautious no problems obvious once air engine too rich high speed After some adjusting ground second flight made Now plane really performing seemed capable anything pilot up point Big Stik put vertical climb After several hundred feet still climbing slowly hanging prop finally chickened out brought down 22 lb plane little over two pounds heavier Evra Cecil says its completely different airplane Kawasaki hated take off after tests As things good news bad news about physical layout engine carb sticks out side engine can awkward some scale cowls other hand cylinder can rotated 180 degrees exhaust carb both pointing down TA-36 fits nicely Byron Pitts cowl thing bothered first rectangular portion crank case casting seemed unnecessary cutting away would save some weight turns out makes difference ofjust over three ounces overall weight hardly justifies cost machining easily overlooked feature fact prop shaft designed output shaft rear shaft some chain saw engines Obviously Im very enthusiastic about engines want emphasize have no other interest just think two good solutions Giant Scale power problem Canadian Geese Well theyre big birds arent about big birds Canada February 80 issue Model Aviation Canada Model Aeronautics Association Canada Model viation AMA report formation Giant Scale association Canada Jim Crawford goes some detail struggle name new organization points out satisfied everybody would have wound up EQTOSODTAC translates Ex perimental Quarter Third Over Scale Original Design Trainer Aircraft Canada managed avoid trap came up Experimental Mammoth Scale Aircraft Canada EMSAC wish best luck have contacted arrange exchanging infor mation address EMSAC Art Lane 171 Baseline Rd W London Ontario N6J 1 V8 26 Model Aviation Cecil Ramseys Big Stik Kawasaki TA-36 installed Forward crankcase casting has trimmed engine Top Flite 20-8 prop used flight test described column rawsr ny m,idisassembled Back ground pegboard 1 -in hole spacingl Crank case splits vertical centerline Husky ball bearings front rear use neoprene outer seals Conrod rides caged needle bearings Inside viewof Kawasaki rearcrankcase casting shows fuel induction system Fresh charge carb passes through reed valve lower crankcase through two large Schnuerle-type bypassesto com bustion chamber Rear bypass seen matched frontcasting Second Annual Thistledown Monster Airplane Rally Thistledown Flyers Napoleon OH solved problem defining Monster Airplane specifying minimum wingspans five feet biplanes seven feet monoplanes doubt that extrapolates three feet triplanes however Theyre having second fly-in August 2 3 Ive heard last years real fun big-bird bash can make Napoleon bit west south Toledo want info write Corky Heitman Thistledown Flyers P0 Box 334 Napoleon OH 43545 call 419 264-5441 Hill Country Flyers Mammoth Scale Fly-In 1980 will 9 10 August Hill Country near Morgan Hill CA Pat Groves recent article about Hill Country gives some idea what fabulous site Any modeler would enjoy weekend youre Big Bird buff make 9 10 August Bob Beckman 8248 Holly Grove Court Manassas VA 22110 Conversion parts added Kawasaki engine CB Associates Pumptype carb w/machined mounting plate 6-bolt prop adapter 1/4-inthick aluminum mount Bolt pattern mount matchestheir Ouadra mount August 198027 Compact flywheel mounts three magnets provide timing signals forthe electronic ignition Points batteries required SPORT SCALESPORT TRAINER pert little sport trainer designed THE PORTERFIELD COLLEGIATE ideal model popular Astro 05 fight system can built high wing cabin rudder elevator control shoulder wing ailerons scale flyer Its gentle forgiving nature make perfect begin-pylon racing aerobatic flying Span 37 inches wing area 292 sq ners yet quite responsive skilled hands balsa construc-inc tion light strong Porterfield can rog grass field weight 28 oz light weight 3 channel radio 1019 climb steeply avoid obstacles Its light wing loading lets land dime give nine cents change Join quiet revolution enjoy Un Porterfield Collegiate neighborhood park school yard Wing span 695 Area 695 sq Weight 4 lb& 3 channel radio Astro 15 can also use Astro 25 15 25 glow engine 1018AETNA FLIGHT IAC 13377 Beach Ave VenIce CA 90291PIONEERS IN SILENT FLIGHT
Edition: Model Aviation - 1980/08
Page Numbers: 26, 27
C GIANT SCALE Bob Beckman KAWASAKI engines Last August Mam moth Scale Fly-in Morgan Hill Bob Seigelkoff C B Associates showed new engine working made Kawasaki use believe weed whip engine about 13 Cu displacement looked very well made Bob fitted prop adapter spinner planning try plane twisted arm often degrees until promised let know worked out Unfortunately first engine wasnt really useable process Bob found two other engines quite useable 36cc 222 cu other 51cc 315 cu photos smaller two Kawasaki TA-36 TA-SI identical except size C B Associates modifications include prop adapter radial motor mount replacement original carburetor Walbro Tillotson pump type carb engines feature electronic ignition run 50 mix regular gas oil reports have heard far say engines very easy start cold TA-36 rated 23 hp 7500 rpm TA-S 1 31 hp 7000 rpm C B Associates data sheet engines lists static thrust variety props figures apparently conservative side since show 19 lb TA-36 20-8 prop Bob Morse reports 24 lb engine same size make prop will test running engine soon will pass what learn above written early April meant July column however decided cover Toledo July issue skip regular column month As result now have info available thing can see photos Ive chance tear TA-36s down look innards pictures cant begin convey feel quality about engine die castings crisp clean machined surfaces excellent exception domed top piston looks has deliberately left slightly rough cant imagine Although havent chance run engine yet have seen some others running reported last month 315 cu engine Bob Hutton EWH running Toledo addition saw first flights Cecil Ramseys Big Stik 22 cu engine Cecil flies Charles County MD club flew Big Stik last year Evra pulled Evra off bolted Kawasaki put 35 oz lead tail balance made no other changes Incidentally trying out different engines plane snap everything hanging out breeze can get easily couple months ago commented didnt want Uglier Stik myself someone else might leam something would useful issue just come out week before flying session Talk about timing Cecil ran engine ground bit vibration level speeds quite low first flight cautious no problems obvious once air engine too rich high speed After some adjusting ground second flight made Now plane really performing seemed capable anything pilot up point Big Stik put vertical climb After several hundred feet still climbing slowly hanging prop finally chickened out brought down 22 lb plane little over two pounds heavier Evra Cecil says its completely different airplane Kawasaki hated take off after tests As things good news bad news about physical layout engine carb sticks out side engine can awkward some scale cowls other hand cylinder can rotated 180 degrees exhaust carb both pointing down TA-36 fits nicely Byron Pitts cowl thing bothered first rectangular portion crank case casting seemed unnecessary cutting away would save some weight turns out makes difference ofjust over three ounces overall weight hardly justifies cost machining easily overlooked feature fact prop shaft designed output shaft rear shaft some chain saw engines Obviously Im very enthusiastic about engines want emphasize have no other interest just think two good solutions Giant Scale power problem Canadian Geese Well theyre big birds arent about big birds Canada February 80 issue Model Aviation Canada Model Aeronautics Association Canada Model viation AMA report formation Giant Scale association Canada Jim Crawford goes some detail struggle name new organization points out satisfied everybody would have wound up EQTOSODTAC translates Ex perimental Quarter Third Over Scale Original Design Trainer Aircraft Canada managed avoid trap came up Experimental Mammoth Scale Aircraft Canada EMSAC wish best luck have contacted arrange exchanging infor mation address EMSAC Art Lane 171 Baseline Rd W London Ontario N6J 1 V8 26 Model Aviation Cecil Ramseys Big Stik Kawasaki TA-36 installed Forward crankcase casting has trimmed engine Top Flite 20-8 prop used flight test described column rawsr ny m,idisassembled Back ground pegboard 1 -in hole spacingl Crank case splits vertical centerline Husky ball bearings front rear use neoprene outer seals Conrod rides caged needle bearings Inside viewof Kawasaki rearcrankcase casting shows fuel induction system Fresh charge carb passes through reed valve lower crankcase through two large Schnuerle-type bypassesto com bustion chamber Rear bypass seen matched frontcasting Second Annual Thistledown Monster Airplane Rally Thistledown Flyers Napoleon OH solved problem defining Monster Airplane specifying minimum wingspans five feet biplanes seven feet monoplanes doubt that extrapolates three feet triplanes however Theyre having second fly-in August 2 3 Ive heard last years real fun big-bird bash can make Napoleon bit west south Toledo want info write Corky Heitman Thistledown Flyers P0 Box 334 Napoleon OH 43545 call 419 264-5441 Hill Country Flyers Mammoth Scale Fly-In 1980 will 9 10 August Hill Country near Morgan Hill CA Pat Groves recent article about Hill Country gives some idea what fabulous site Any modeler would enjoy weekend youre Big Bird buff make 9 10 August Bob Beckman 8248 Holly Grove Court Manassas VA 22110 Conversion parts added Kawasaki engine CB Associates Pumptype carb w/machined mounting plate 6-bolt prop adapter 1/4-inthick aluminum mount Bolt pattern mount matchestheir Ouadra mount August 198027 Compact flywheel mounts three magnets provide timing signals forthe electronic ignition Points batteries required SPORT SCALESPORT TRAINER pert little sport trainer designed THE PORTERFIELD COLLEGIATE ideal model popular Astro 05 fight system can built high wing cabin rudder elevator control shoulder wing ailerons scale flyer Its gentle forgiving nature make perfect begin-pylon racing aerobatic flying Span 37 inches wing area 292 sq ners yet quite responsive skilled hands balsa construc-inc tion light strong Porterfield can rog grass field weight 28 oz light weight 3 channel radio 1019 climb steeply avoid obstacles Its light wing loading lets land dime give nine cents change Join quiet revolution enjoy Un Porterfield Collegiate neighborhood park school yard Wing span 695 Area 695 sq Weight 4 lb& 3 channel radio Astro 15 can also use Astro 25 15 25 glow engine 1018AETNA FLIGHT IAC 13377 Beach Ave VenIce CA 90291PIONEERS IN SILENT FLIGHT