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Originally Posted by Electric Frenzy
1. You're suggesting I mimick the Tesla Roadsters motor and battery pack but scale it down by 80%?
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50%, lets say you keep the battery pack at 400 volts, but use half as many cells as the tesla (and half the motor).
And you can do that because you figured out how to reduce the coefficient of drag(CD) multiplied by the frontal area (a) in half (or CDa) so top speed will be similiar
And you also figured out how to halve the weight of the vehicle so you have half the mass of the tesla, and half the power, so acceleration should be similar, though rider weight will have a larger influence.
Quote:
Originally Posted by Electric Frenzy
3. You're saying with 1/10th of the battery pack they're using I should be able to go 46miles per charge? for about 70lbs worth of weight (in the batteries)
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The tesla batteries are at their max for these acceleration figures, the 1/10 pack numbers didn't work out, sorry. 1/2 the number of batteries works, and is a healthy bit of weight to lose still. You'll just have to live with a 220 mile range
Quote:
Originally Posted by Electric Frenzy
4. "Transmission=Single speed double reduction bespoke transmission"
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A couple gears, you can't shift them but they make more torque at the rear wheel. According to the
specs it is 8.28:1 overall ratio. It would be like having a 10 tooth front sprocket on the motor connected to an 83 tooth rear sprocket, not that those are practical sprockets, but sprockets are fairly simple to make too (lots of drilling)
Quote:
Originally Posted by Electric Frenzy
5. I'f I'm using a DC motor I'd still need a trans for reverse as I wouldn't be able to just reverse the polarity of power going to the motor. Is that correct ?
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We are in the motorcycle section. Who cares about reverse?
How will you reduce frontal area substantially if you have more than 2 wheels? OR the weight? We are talking about a bike right? But DC motors are reversable, just got a bit more controller expense though. Might use 2 motors (each at 1/4 the tesla motor outout) and use the killicycle series/parallel shift for possibly more performance, but still direct drive.