Jumat, 04 April 2014

model airplane help ?????????? urgent?




JoSePh --6


I am from India there are no hobby shops in this god damn country , where can i find a motor tht can develop enough torque and rpm to lift a model airplane model , am sure i cant buy it in shop becos there are no shops tht sell micro motors here , if u can pls list some equipments where can i find a motor suitable for model airplane making , like in some toys or hair dryers like tht .......pls help its urgent ( i tried to use vubrating motor in the celkl phone to build but it isnt working pls helpppp


helppp
thank you

thank youuuuuuu



Answer
You mean a gas powered engine like a Cox motor? There is no substitute I know of. Those engines , like a real planes, are engined for just that. It would be like trying to substitute a rocket booster with a lawn mower engine. Sorry.

What the best transmission for a 20HP motorcycle build?




Kyle


I'm building a motorcycle useing a 20 horse diesel off a lawn mower I plan on making it chain driven and I know the transmission need to have a 90° turn in it


Answer
Local diesel conversions have been using Harley transmissions and Yanmar diesels, a couple used Haatz engines and again the Harley tranny. The Harley big twin tranny from 1950s on up is a separated unit with a clutch pack, chain or belt primary drive good for 175 to 100 hp. The other separably trannies maybe used are BMW and Moto Guzzi- these are the shaft drives and will have the clutch pack on the tractor engine used- adapters may be made- the old VW engine into /2, /5 transmission had adaptor kit circular at many BMW dealers- but alignment on that kind of set up will be tighter tolerance than the Harley with chain or belt primary coupling. Older english cycles had separate engine and transmissions until mid 1960s, then went unit construction except for Enfield, Matchless-- early Triumph and later Enfields are hard to find- but note the Indian made Enfields are using somediesell engines of 300 to 500cc - a 425 Landini gardentractorr/utility seems to fit into Enfield frame and connect to the tranny fairly well, is a common swap in India and some other countries that can get the Indian made old design cycle tranny and the Italian engine.




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