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[BK Xray]

Maybe try these guys: https://bmsbattery.com/

[BK Xray]

You don't really need a new cassette with the Bafang unless the cassette is worn out. I would consider using a BBS02 instead of the BBSHD on this bike....

[BK Xray]

A friction drive is at its worst in wet or muddy conditions!

[BK Xray]

I have wondered about that. It seems like it could be welded to an aluminum trike boom.

[BK Xray]

I think that is used for the Bafang systems that don't need the threads just the spacer.

[BK Xray]

You're probably going to have to give more details to get any answers. What motor are you using, what battery etc?

[BK Xray]

With a single speed, a mid-drive type motor is not optimum. The motors need to be spinning properly and not lugged to make them last. When I started looking...

[BK Xray]

If you want the same kit, fast service and good customer support you might look at this: https://www.goldenmotor.bike/product...shd-48-volt-10...