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If that means a system for vetting kits, that wouldn't help those wanting to build their own ebikes without using a kit, though....

The daftest thing is the Low Powered Moped category. Speed restricted to 25kph, pedals compulsory yet, because if it isn't a bicycle it has to be a motor vehicle, full DOT approved helmet required :rolleyes:

I'm sure you're right on that but it would be nice if the regulations themselves were in step. If it came to a personal injury case though, you'd be out of luck....

There is another significant difference which is that, in this country, you are also obliged to wear a DOT certified motorcycle helmet.......

.. :d .......

They are doing it themselves: http://pinion.eu/en/discover-pinion/pinion-e1-8/ Miles

Lynda, This route-planning site makes things a bit easier: bikehike.co.uk - Course Creator Miles

With regard to range and motor power: Bear in mind that, the peak efficiency of a motor is achieved when the output losses are equal to the parasitic losses. A larger motor will have greater parasitic losses and it's peak efficiency state will be at a greater output torque. Given a...

That's the current situation, I think. Avoiding the necessity for type approval on vehicles which don't even have the means to pedal them is something new. Anyway, flecc has followed all this more closely than I have.

I was noting that, if pedalling is no longer a requirement then, the prejudice against throttles has disappeared too.

Unless I've missed it, no one has commented on the significance of this: "E-bikes, that is bicycles with an auxiliary motor that can propel the vehicle even if the cyclist is not pedalling , would be excluded from the type-approval provided their speed is limited to 25 km/h and their weight...

Going back in time to an idea I proposed, following a line of thought that flecc initiated: http://www.pedelecs.co.uk/forum/electric-bicycles/654-light-fastest-climbs-mountains-pretty-efficient-6.html#post8998

See also: Endless-sphere.com • View topic - SRAM to launch e-bike hub

No problemo :) Here's a thread that we had on Endless Sphere, highlighting an issue re. the suitability of various freewheels for use on freewheeling cranks: Endless-sphere.com • View topic - Destroyed! A warning to those using freewheel cranks....

Sorry I misunderstood! I should have known better:)

This was the context, flecc. A hub motor driving the LH side of the BB. At least, that's what I assumed.

This bit wouldn't be possible, I'm afraid.

Cranks (Pair) Of course, you won't be able to isolate the cranks from the motor on a LH side drive.

Here's a good general reference: Lessons In Electric Circuits

A few more links on motors: http://www.fastelectrics.com/elecmotorbasics.htm Electric Motors for Model Aircraft a-BM-motors-1 from: http://www.southernsoaringclub.org.za/ http://www.endless-sphere.com/forums/viewtopic.php?p=388184#p388184