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So, after hours of searching (mostly with head banging a wall) I've discovered a motor that probably many here will be familiar with the Bafang 36V 250W RM G020.250 At first I thought this table referred to the maximum rpm, but I've worked out, they will be the controller shut-off speeds at...

I'm not going the mid-drive route. Apart from anything else, I may want to use the hub motor on different bikes. I've got about 4. "Technically" 5 if you count the one I'm building for someone else. :oops: Are you saying if I can get enough amps into a 250w motor, it would climb hills?

Like this? (Thank goodness I didn't need to calculate it myself.) The rpm figures seem a bit low given others I've seen referenced elsewhere, though it does tie up, or is pretty close to what you have at 19mph. It's also in the ball park of what Woosh has mentioned at 250rpm. That said, if...

No. The kit supplied by Woosh Bikes, does not utilise one, thankfully. There were a few challenges met in the build, and having to design a bolt-on torque arm was not one of them I'm pleased to report. I have seen several held onto the fork using circlips, which would not have been suitable. I...

I hope it stays that way, but riding drunk at the speeds you can travel.... You are stacking the odds against. o_O I've just done some reading up on Town House Studios. Them speakers must have had some very famous people listen to them over the years. :cool: I still wouldn't want to be your...

I'd be very happy with 21mph. I'd be happy with 15mph. I want the grunt for hill climbs, not speed. A mate derestricted his Levo which I tried out on a flat/level road. Speed was ridiculous. Okay you had to peddle, but it was so fast ..... Acceleration was incredible. He burnt out that...

I very much doubt the police are interested in anything going on here. Their job, is to keep a lid on communities, not stir things up without a reason. Let me give you a couple of examples..... Some 20 or more years ago when the internet was a lot less monitored than it is now, the police were...

And now we know why the moniker "soundwave". :oops: :cool: I'm not a fan of your cycling habits, but I sure am impressed with that studio! If you have them, I bet your neighbours aren't. ;):D

I don't often enjoy being talked to like I'm a child, but this is one of them. What relationship is 100-120mm to the motor? Motor diameter? Do 250w motors come in various diameters for example? At the moment the motor I have in mind is a Mxus XF08, because it seems popular, and likely, through...

This morning I was racking my brains to try and remember a time when the opposite is true. Had an appointment at the dentist this afternoon, which is usually a pleasant experience thanks to a lovely man who tries to help look after my teeth, but remains something I worry about... Anyway, what...

Okay, no point in ignoring advice I've asked for, and even less sense ignoring someone with practical experience. I hope I'm not heavy/heavy at 13st (though I'd like to weigh less), and I won't be towing or doing extreme climbs. Wheel rolling circumference will effect the required rpm of the...

When I asked why anyone would want a throttle that was deactivated when pedalling stopped, I didn't understand this meant the throttle wasn't turning the motor assisted bike into a moped. If I (now) have this right, the throttle effectively replaces the display setting with infinitely variable...

I'm pretty sure I've made it plain this is going on a bike with 700c wheels..... 622 sized rims. I think you are getting confused with the trike project, now concluded. (Until winter at least.) ;)

The hijacking isn't a problem, I'm pretty centred on this project and useful advice provided. What is slightly counter intuitive, is to have an over-powered system. Meaning greater energy available than can be handled by the motor if used at a constant rate. On the face of it, one would expect...

While I don't hop over vehicle sized obstacles, I do pull the front of my bike over the occessional fallen tree, large enough (twice) to clonk my chainset before the back wheel climbs the same tree trunk. (Another reason a mid-drive is not wholly suitable.) I think I reported recently, the last...

If I wreck the bike, I'll be £40/£50 out of pocket. I only own aluminium bikes, so there is no alternative.

Yep, know that. Yep, know that. Yep, know that. Plus I'm not so old/decrepit I can't do the same multiplication sums children are expected to. ;) :D Yep, know that. And I'm pretty sure it was you I quoted saying so earlier. Hence this thread. Yep, got that too. (And used that and at...

Gears, currently 7 but moving to 8 via a cassette. Rear sprocket hasn't been bought yet but 11-32 is likely. Frame aluminium. 13st. I have chunky tyres for offroad, less chunky ones for tarmac. 52mm/2" width for both. Thank you for the welcome. :cool:

I had a look at the Wiki page as suggested. I'm embarrassed to say I understood very little, but it looked like a series of formula to determine performance. There are people here that could work out the potential for any given motor, (though I'm not one of them), but at this time, I'm still...

And they said it couldn't be done .....! Actually, no one said it couldn't be done, they just suggested it wouldn't work .... Penultimate status of the electrified (e- assisted) Hase Kettwiesel Evo. Parts and labour circa £900, which is half of one quote and little more than a third of another...