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The great thing about streamlining a bike is that good design offers a great deal of protection with out adding much weight. Smaller bikes with a low Cd can keep up with larger bikes. Any engine with good breathing and a high compression ratio will tend to be more efficient when matched to a chassis that is around 36 lb/hp and a Cd of 0.3 or less. Medium sized frames could handle a small 3 cylinder diesel.
Last edited by Grant-53; 10-26-2015 at 03:00 PM..
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