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There is a guy with a Honda horizontal on here and he streamlined it.
The engine failed because of overrevving becoming possible and the norm because he didn't re-gear it.
What I am trying to discuss is that since best efficiency out of an engine is happening at lower rpm, that the vehicle is probably be heavier and with a tad more rolling resistance than a bike, maybe a bigger capacity engine is gonna help on take off while not being too detrimental on cruise through agressive re-gearing.
After all, it is a required hp per mile/hour (efficiency of the vehicle) equation but the hp of the engine could well be a fraction of its peak and gain back in efficiency what it lacks in capacity.
Truck engines are spinning real low.
What is their FE / load (weight hauled) compared to other vehicles ?
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