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This controller is plug and play with your Yose kit, apart from maybe the battery connectors, but it's larger than the one you have, but it will run cooler at high power levels. It may not fit in your existing bag, so check dimensions on the ad. It is also 22 amp, which is a little high for...

Try changing the valve, does it happen on both front and back tyre?

It's a long thread with lots of info about using different controllers etc. Yes, I'm pretty sure there is one, will try and find a link.

I'm not sure that the Yose Power controller is 48v compatable. Double check this, or you will kill it. What does it say on the label?

Is the motor tight in the frame? What are all the cable ties for?

Don't worry, if David hasn't got what you need, there are plenty of cheap parts available that will keep your bike on the road. I revived an old 905 myself last year as my winter hack.

That style of Wuxing throttle isn't used much anymore. This matches the one you have, but the connectors may not match, so some cutting /soldering/joining may be required...

This is an old system running a 16.8v NiCd battery, I think. You may find some useful info in this very old thread. https://www.pedelecs.co.uk/forum/threads/sram-sparc-how-does-it-work-technically-two-motors-how-in-practical-use.508/ Flecc is still an active member on here and he may come along...

If you want to stick with cable calipers, I've had good service from Avid BB7, easy to keep adjusted. If you want to fit a 180mm disc, you need a 40mm IS adapter...

This is the KT LCD1, check it has the right connector. http://www.pswpower.com/ven.php?cargo.2016-2v-0xg8

I would think they are the same, no reason they would be different. What colours do you have?

Surely any panel mounted connector can be easily replaced if wear or damage occurs. If you have had problems in the past with xt60/90's they may have been fake, lots around. Good luck with your search, let us know what you find.

Yes, saw that, conflicting info from 2 resellers and the manufacturer, what's new, eh o_OPosssible that ebike.ca have faster wind for US market? It's not unheard of for Bafang to make changes without notice, BBS02B for instance.

If their imformation is correct, then the motor from Motowoks is much slower, so will not reach 400 rpm @ 48v. This matches the spec. from Bafang. https://www.bafang-e.com/en/oem-area/components/component/motor/rm-g310250dc/

I don't see that battery as an improvement over the one you have. I would try it with a new 22/25 A controller and see how it goes. If you find the bike cuts out at high power levels, then you will know where the problem lies and reassess. If you fancy the chalenge, then you could fit a new BMS...

I asked about diff. speed motors and they only do one, not clear on RPM, just said 25 kph, which isn't that helpful. Edit; Just came back with 12 or 13T winding, so 230/250 RPM, suitable for 26,700c and 28".

Nice find there Nealh, good price if free postage is correct.

That's good news, I'm sure Jimmy will be able to assist you if you don't fancy working on the battery yourself.

Not the best things to have done, but I would not expect it to be completely flat after a few months. Do you have a meter to measure voltage of battery and charger? Who re-celled it?

According to the above blurb, the C1 is a Li-ion pack, so I would hope they are using 18650 cells.