[Grant-53]

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.