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motorcycle engine for a boat
this is more of a theoretical question more than anything else but a
couple of mates and i were chatting about boat building and engines in general. basicly ive heard a lot of engines are based upon marinised car engine based but i got to thinking how simple it would be to use a shaft drive bike engine {1} since theres a wide range of shaft drive engines from 550s to 1100cc especialy the 900cc yamaha diversion engine which is dirt cheap. i know the engines wouldnt last as long but sing they start at £80 from breakers{2} means it could be treated as disposable item like petrol. im just posting to see if there is any serious flaws in the idea such as not enough torque or other variables {1} i guess i would have to work out the forces and calculate propeller assuming the revs arent to high {2} breakers tend to sell all the stuff that breaks in a crash like plastic and bits that rust leaving them with the engine which most folk dont want to replace |
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