It seems that the scooters that actually get good fuel mileage tend to be the smaller ones (50cc). But in an effort to attain highway speeds it seems that usually the CC's are increased, and mileage decreased. What about adding a turbo charger to a small engine and then putting that in some sort of a scooter?
Small Engine Turbo Charger - Small Turbo Kits | RHB31 VZ21 Turbo charger
I would think the turbo might allow for lower RPMs too. Any thoughts? Which engine would be the best for this operation?
I'm thinking of a very aerodynamic custom scooter. Maybe a hybrid. Would likely need a regular manual transmission. I don't know if this could be put together though with off the shelve parts.