Andrew Hodson

So we been in EEC for years, & still Max. 200W for 1 person bike, small petrol bikes still need licenses, still 70 mph limit on 2-carriage way.

is it like some e-bikes, need to get up to speed 1st, then turn on?

Yes; I like a bit of Scotch whisky, 1 kinot change the laws of physics, Jim; electric tension (voltage) = speed of motor. If 1 tries to use more volts, any additional are just turned into heat. Then It's too much for her to handle. She'll blow! Jim. So impulse power is used...just like on Star Trek! Turning the power on & off, on & off to average the voltage wanted. So I guess could stop from going faster, could still get more power from motor, without it being worse than that, it's dead, Jim

I answered some 1 who asked what 1 would gain by using 2 × voltage, I said that = 2 × the power, but that = only a rise in speed of 10 to 13. Now I see that if 1 goes @ the same speed as before, 1 gets the square root of 2, or about 1·4 × the power. (as well as the 2× voltage being used ½ the time, the motor is using it ½ the time.) Have I got this right? (I know 1 could burn out motor if going 2× as fast.)

I'm thinking other way; don't care much for the law, but now find mine Izip I bought on Ebay = not good for going up hills, even tho' I read it has 450w motor. = it no more powerful than my Zipper Z3 @ 200w? Thinking of fitting rear light I've from 70s to + to car, just change bulb for 24v lorry 1. 1 LED uses ~2volt, so unless 1 uses few in series, won't be saving power over normal bulb.

Som1 posted where to get 1, ~= £250 inc. p&p. 11Ah instead of 10. 1 should expect to charge every night if used every day.

I'm thinking of doing this + mine Izip, I'd bought 48 volt 1kw rear wheel kit sans battery 1st. In theory voltage ~ speed of motor, but too much could over-heat it. & even +2 times power, you'd only get 13 mph, if it needed all its power to do 10.