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I have a 500w CST here, 270 RPM (22-23 mph) in a 26 wheel. Its done about 500 miles. I may be prepared to sell it (and a suitable 30a controller) if the price is right. I would prefer a smaller rear motor, with cassette.

3 months, 6 days a week, charged 2 times per day is 180 cycles, which is about the lifespan of a heavily drained SLA. You need to change to a 10ah Lithium ion, which will last for 800-1000 cycles, and give you more than twice your current range. (So you only have to charge once a day) This...

t That one from Keyde is a nominal 33v, and I cant work out how to purchase the correct size. Contacting Jimmy is a great idea though. Any idea where I can get a suitable BMS?

Problem is they don't do them in 5s . I was hoping to use 2x5s packs to get 36v. I could use a 4 and a 6 but that's going to make things more complicated.

The KU65 is a 6 FET controller, and is happy up to 15 amps (18-20 if modded). On the 12 FET Controllers (s12p and s12s) this motor will happily run up to 30A, 1.25kW. I want to run it at about 4A peak, 168w, where it may stall. I will report back when I get it on the bike.

Your right, not what I asked, but exactly what I should have asked. Thanks for the response. I'm now pretty sure it'll be OK, as the only difference is current. As I say, it runs nice and quiet on the bench so it's only a question of power. With 6ah of lipo and my newly acquired Carrera...

I reckon I could just about fit the two 5800 lipos and a 6fet controller into a saddlebag, so I think that's the next best thing.

Yes, that looks like the next best answer. I was looking at these: http://www.hobbyking.com/hobbyking/store/__9934__ZIPPY_Flightmax_5800mAh_5S1P_30C.html With the ones you linked to, any bottle would have to be a diameter of about 120mm (a bit big - the ones i linked even worse) so I would...

Don't get me wrong, converting the Raleigh is entirely possible, its just a bit more hassle than a modern bike, and I'd still be very wary of those brakes. You'll need to be able to build a wheel, and source the correct size rim/spokes. Looks like you are limited to battery at the back, so you...

As D8 says, the brakes are clincher for me. You can pick up a half decent secondhand mountain bike on eBay/gum tree that will be much easier to convert. As you have experienced with your wife's newer, yet heavier bike, the Raleigh brand is not what it once was. While I believe they make some...

...but hopeless on the road. Another vote for Schwalbe Big Apple (and Fat Frank, similar, only available in 2.35) I can't remember ever having a puncture with these in about 4000 country miles, where thorns can otherwise be an issue.

Where that woman who wanted a folding commuter for less than £350?

I'm a little over 100k and most times I've broken spokes is when I have abused the bike in some way. Jumping off stuff, crashing through a massive pothole at 30mph, too much power (>1000w) and a lack of maintenance have all caused me broken spokes. I have also had the odd old spoke go pop...

Yes, that's my idea. I have a few bikes, one is used mainly for fitness so I really only draw more than 4a on a few steep sections of my 10-15 mile routes. As a result I average around 6wh/mile, perhaps a bit less (getting fitter, losing weight) 5ah (180wh) would give me a range of 30 miles or...

Has anyone managed to make a 36v battery that fits into a normal (ish) sized water bottle? I don't mean the big brushed ally things that look like torpedoes like you find on the Kudos bikes. I only need 5-6ah, and was willing to go lipo but I can't seem to get anything with the correct dimensions.

He also doesn't want to have to re-do his makeup when he gets to work.

Has anyone tried using the above motor with a 6 FET controller? I have one kicking about, and it runs fine on the bench with a KU65, but I don't know how it'll be on a bike. I don't require much torque, I'm happy with my other SWX bikes in that regard. But, the next build will be all disk brake...

Roughly, but I'd just use the axle bolt to hold it in place, and the torque arm to stop the axle from spinning in the drop outs (as it is now)

You won't be getting Samsung or Panasonic at that price. The best you can hope for is that it doesn't burn your house down. The only way it could be done within your budget is second hand or DIY. Then you'll have to lucky/handy, probably both. Any new electric bike you can buy today for less...

I don't think 6mm bolt will be strong enough. I think you should aim to use the rear wheel axle as your support, say by cutting a 12mm slot into the bottom of your support, then clamping back in place with wheel nut.