Quote:
Originally Posted by Grant-53
On any machine look at the power to weight ratio and the rpm of peak torque. The aero drag force at speed determines the power needed. Note that Charlie Perethian used a Honda 250cc single to get 157 mpg at the Vetter Challenge that is very similar to the new CBR model. The high mpg records of the 80's were set by 125cc bikes with full body fairings.
Over the years in the auto parts business I sold tons of belts of all types. The manufacturers such as Gates and others offer a wealth of information.
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As I understand it, the conditions and speeds were much different in older Vetter Challenges than what is required for today's challenge, with no requirements for cargo and no minimum speeds.
I assume the record of 470MPG was done at lower speeds with a good amount of P&G, because the winner had the trans modified with a neutral available from top gear.
Jay