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Good - you obviously managed to get the seat fixed up! Spokes do seem to go on Wispers - I had to replace one after a couple of hundred miles - but five sounds like a bit of an epidemic. My wife was the main rider of ours and she is not very heavy so greater weight probably has been a factor...

That's pretty light! I'm building a new bike for my wife, which I expect to be just under 21kg. Not quite this level but lighter than the Wisper, which is the benchmark I'm aiming for. It will also have a rack, full mudguards, bell, reflectors, lights and a full set of spokes! I've also...

Not many electric bikes are going to peform well across fields, but one thing to be said for the Wisper is that, while it might look chunky, it is just about the lightest production electric bike going. A good few kg less than the Khalkoffs or Ezees - even lighter than Powacycle. Only...

I came across those ones after I'd posted. Clever design isn't it - but a bit expensive! The hard bit about making a torque arm is getting the oval 12x10 hole. Drilling other holes in it to put through bolts into the mudguard stay holes is relatively simple! Frank PS I hope the torque...

Intriguing concept - 'not legalised yet' Does that mean they have actually been banned? If not, would they not be legal by default?

I've just come across this ready-made one listed on eBay. c.£15 delivered to the UK. I've just ordered one! Frank

Bad luck, Andy - sorry to hear about that setback. I do sympathise; putting together a kit bike can be a series of frustrating reverses like that - however it is worth it when the thing is working. I'd recommend fitting the motor to a non-suspension (steel) fork - either through getting a...

I agree with the idea of getting a torque arm. At one point, ebikes.ca were selling some ready made ones but not sure if they still are. I made one out of an old gardening tool and others have adapted old spanners... The other thing I'd suggest is to make sure you get a steel fork, not an...

It depends on what you like - the Panasonic system or a hub motor. Different people will have different preferences. There are some questions that will help you get the best answer... - How steep are your hills? - Do you want to pedal all the time, or coast along? - How important is...

Andy, Good to hear you've got sorted out. I understand that the ETS Sparticle is their rebadged version of the Tongxin motor, which is also used as the motor for the Cytronex and the Nano. The 160 rpm version in a 26 inch wheel would be a good climber, and should probably give you...

Thanks John; it would have been perfect timing, but I'll pass on them - it takes me a good hour to change over a controller so I want to be absolutely sure that I have the right one before doing it. Also the newer Tongxin controllers have proven more reliable (for everyone else, at least!) than...

I'm just back from a week long tour in the Netherlands. Had a great time: excellent cycling, nice country, pleasant people, even good food! We took our Tongxin-powered bike, which - apart from a blown controller - performed very well. A couple of things struck me about electric bikes...

Interesting - confirms what I had suspected; the controller is not limiting current. A fuse might be one way to do it. I was using a 20A but might start using 15A ones, on the basis they might go before the controller. However you have got me thinking about a cycleanalyst now. They are not...

No, it's for a Tongxin motor fitted to a non-electric bike. Currently it goes in a pannier, but I have another plan!

Mine have just stopped working. Others have mentioned burning smells and smoke, but I've never had that.

I don't actually use any connectors, other than for the wheel. I have an IEC (kettle) connection on the front forks, to enable quick front wheel removal. For all the others, I just join the wires and cover with heatshrink (or electrical tape if I have to do it by the roadside!) I suspect...

Yes its a 10Ah one, but not from eBay as the prices on there are higher than if you mail Ping directly!

There's a post by Ian in a thread started by Footy just over a year ago which contains a circuit diagram showing where the fuse should go. I'm a little less keen on Tongxins than I was having had another controller (my fourth, including one from another vendor) blow half way round a week...

That's right. If changing the angle of the adjustable arm doesn't give you enough height, or brings the bars too close, you can get a stem raiser

I think you set up the controls right. It looks like you had a thumb shifter set up on the right in the equivalent position to the throttle. Gears, throttle and front brake is too much for one hand when you are going fast, and something like a 14-28 6-speed would give you enough range for...