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I am not sure we are speaking on the same wavelength. We are getting off topic for this thread. My old Ross Gran Tour was set up with a half step plus granny: 28-48-52T crank gears and 14-28T 5 spd rear cluster. The other end of the spectrum is my 2000 Jamis with 24-36-46T and 11-28T 8spd indexed shifter. Both the Kreidler 50cc race bikes (15 spd) and heavy truck transmissions (12 spd) are worth examining. Plot ratios on semi log scales.
I am looking forward to seeing your streamlined CBR 250. Wish I was well funded enough to try streamlining an electric scooter. I must settle for a 23cc 2 stroke friction drive motor on a full fairing bicycle. Trouble is that it would not be street legal in NY or Ohio. A bicycle fairing would be 7/8 the size of a motorcycle fairing.
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