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The first chapter of this book is the best introduction to the theory behind electric motors that I've come across...

Clearly, that wouldn't make sense. So, although the voltage used is pretty much irrelevant, it's a handy marketing tool....:rolleyes: Starting at 18Volts would have given more scope... :)

That if you rewind the motor to reduce the angular velocity per Volt, the amount of torque you get per Amp will increase proportionately. If you have a motor wound to run at a given speed on 24 Volts and you want to rewind it so that it runs at the same speed on 48 Volts, you double the number...

Hi d8veh, I took that as read. For a given specification, it makes no difference if the motor is designed to run on 24 Volts or 36 Volts. A motor's velocity constant is the reciprocal of its torque constant. Miles

Errrrr, no. As far as motors are concerned, the voltage they are designed to work with makes no difference whatsoever to their efficiency.

You had every right to be on the road: Rules for cyclists (59-82) : Directgov - Travel and transport London Cycling Campaign Miles

This is possible with BikeHike: bikehike.co.uk - Course Creator Choose "Show Elevation Data" and then select the "Gradient" option. Mark a route for the section that you want to measure. Miles

Chaos Group Interviews Erik Holmen | Consumer | ROBRADY blog

Charles is the Prince of Wheels | The Sun |News What a pity that the bike wasn't made in the UK........

electricbikemag.co.uk::Electric Eurobike 09: Pacific Cycles, Ave Bikes

Google Translate Doesn't look like the Bosch system, to me.....................

No. That was my point......

5 out of 34 not using the Bosch system..........

Here are a couple of links that may be of interest: Drive Calculator Endless-sphere.com • View topic - New Open Source E-Bike/E-vehicle calculator & simulator Miles

The GoCycle is certainly assembled here, now. I'm not sure how many of the parts are actually manufactured here, though.

Surely the GoCycle has the greatest claim to being a UK product?

Thanks John, That's clear. They mean a 2 stage transmission. Miles

Velospeed, In the brochure for the Daum bikes it says: "..... A two speed transmission, located in the waterproof housing, changes almost noiselessly as needed to compensate for lighter pedalling". Is this just a mangled translation or does it really have a 2 speed automatic gearbox between...

Revision 6. Simplified version..... I've cut out the battery/distance stuff and added a breakdown of torque outputs. Open Office and Excel formats: Miles

20 mph zones are no good. You need a blanket 20 mph in urban areas.... and some enforcement....