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Is that powermat a charger or a power supply? What I mean is, will the powermat stop charging when the current drops off, or does it expect the device to manage the charging?

If wheel is right way round then you will need to swap one pair of phase wires, and try it very gently to see it improves.

Feel free to start your own threads, I'm sure there are plenty who would enjoy those topics....

That bike looks to me like it has a specially built rear wheel (48 spoke) , in order to take the punishment that a 200/300 kilo load will throw at it. If that's the case, then you might want to keep the rear and fit an electric front hub. Front wheel kits are easier to fit and more versatile in...

Thanks all. It must be a timing thing, as both controllers are (at least were) running at the same volts/current. The noise is only a problem with the KU65.

One of my bikes (well the Mrs bike to be precise) has an 8fun 24v, 250watt sensorless motor from a hilltopper kit by Clean Republic. I am running it from at 36v with the original controller (15amps peak). It's quite a nice little controller, but looks a little fragile, so I bought a KU65 to...

Caveman ;-) You wouldn't catch me doing that to all of my controllers, over the last few weeks to get about 30% more current, and confirming the results with my watt meter.

Someone needs to coin a phrase for that grin.

I just checked my nexus 4, and Geebee's statement is true for me. In 4th its about 11:6 (ish, its raining so I only checked quickly) I really like mine, and find that I rarely use the lowest gear, and can't keep up past about 18mph.

Me too.

Agreed. Modern dc-dc connverters are 80 to 90% efficient. LEDs are also extremely efficient. On my setup, I reckon I'm drawing about 400ma on the 36v side. That means I could switch my lights on now, and they still be running as the England/Ireland game finishes on Saturday afternoon. Or to put...