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the Woosh battery has about 50cm lead with bullet connectors. Depending where you put your controller, it may be OK, just plug in without soldering anything, or ask them for a couple of spare crimps. Looks like this one:

I am sure you do not think that the 8Fun kits are crap as you are buying the same stuff yourself.

India may be a good choice. Good luck with Kickstarter.

I am retired now, I have clocked in for more than 40 years. I think your attitude is a bit 'know it all' - let's wait and see how you proceed with your project.

On a crank drive, the torque drops when speed increases. Also, the chain and cogs act as torque limiter, soften the shock to the rear wheel. Also, crank drives have soft start any way. I am just stating the obvious - building motor wheels for BPMs usually requires a lot of experience. aerobelly...

Rakesh, don't you think you oversell a little?

then most of the elements are there. The scheme would just use the existing access cards and billing system. You'll need a lockup where bikes needing servicing will be kept. The service guy will then pop in with his van, fix the bikes and return them to the pool. Do you have mains power where...

folding means easy service. Most of the electronics is hidden (and protected against water ingress) inside the frame. Automated billing: do you need electronic release with RFID cards? if the campus have wifi everywhere, it's easy to implement on a web server.

I reckon woosh would be interested in this project. Dewi, would you take a look at this new bike, the Zephyr-B. It has a big fat BPM motor, will cope well with Wesh hills, also folds, so can go into lilfts. http://wooshbikes.co.uk/?zephyr-b

derf, don't underestimate the difficulty with wheel building for a fast machine. d8veh's own guesstimate, your controller pulls an Amp for every mph, so 25A for 25mph, the risk to the spokes will be exponential to the speed and amps. That's the main reason I have always recommended crank drive...

Bob, like Cyclezee, I am impressed by your self defence post. This forum is a fair trial ground - nothing will be taken face value so don't be disheartened by some sharp criticism, it will do you good on the long run. Do bring your projects and ideas here, where you can get the best sounding...

I can't see this project is going to fly. You are more than half way through the fundraising and you've raised only 28.5% of the target. Your kit is not even street legal in Europe, and you need to beat the Kalhoff Impulse Ergo NuVinci on specifications.

PF, if you go for a conversion, have you thought about where you are going to put the battery?

woosh have a special tool to tighten the silver bottom bracket cup on the non-drive side. It needs to be done up quite tight (don't fret when you push hard on the lever). They can lend it to you or you can buy it for about £5. PM Hatti, she'll sort you out.

it looks like £799 is the right price for a first bike, you can still get a lot of choice. Woosh are moving towards £899 bikes with Tektro hydraulic brakes and better quality forks fitted as standard.

woosh is in Queens Road, Southend, can't be that far from you. Always try as many bikes as you can before making a decision. They also have a few converted bikes that you can try.

woosh will have BBS01 in 36V 25A 500W and 48V 18A 500W with matching batteries in about 5 weeks for not much more than the 350W kit.

good luck with the project, Rakesh.

another way to have a similar assist scheme is to replace the normal throttle with a heart rate monitor. It does not cost much to develop.

let's assume Bosch realized the problem in the old bearings and decided to improve the design by fitting a better, stronger version in the new motor. I am curious to know what members think is right. 1) the old motor should be replaced FOC 2) the old motor should be replaced but you pay half...