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Motorcycle engine modification for aircraft powerplant

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hopeless_dreamer

Well-Known Member
Joined
Feb 11, 2013
Messages
64
Location
Delhi, India
Hi everyone,
Its been a long time since i posted, but things are getting back on track. I am collecting information on homebuilt airplanes and currently have a somewhat murky idea about what i would like to build.
One of the problems i keep running into again and again is that almost all the amateur designs i have studied need the VW engine. Not something that's available in India. I would like some input from anyone who has modified a motorcycle or car engine to power a plane. What would be the trade-offs and dangers of doing this? Is there a minimum sustained power requirement for the engine (as i have heard most "average kumar" cars can only put out about 20bhp for long duration runs). This is my spec sheet:

Size: depends on wing
Weight: 220-280 pounds
seating: 1
max speed: < 110 kts

Any suggestions/comments welcome.
 
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