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bike nerd stuff
I want to add a mid-drive motor (#Bafang or more likely #Tongsheng TSDZ2) to this #Cetma:
https://social.ridetrans.it/@Andres4NY/109468987375343649
It has an Enviolo/Nuvinci rear hub, and an #EccentricBottomBracket to tension the chain. I don't really want to switch away from the Nuvinci to a derailleur, but the motor will most certainly not permit the eccentric BB to move & will be replaced w/ an adapter.
Any else done this, and have a suggested chain tensioner model that will work w/ this kind of hub?
bike nerd stuff
Alternatively one of those nifty bottom bracket chain tensioners that will fit with a mid-drive motor installed. Like the YESS ETR-B: https://www.mtbr.com/threads/yess-products-etr-b-tensioner-product-review.408510/
bike nerd stuff
Looks like the Yuba Supermarche (Enviolo hub + Bosch mid-drive) does this.
And there's a bunch of cheap no-name tensioners that will do the trick. Available with the option of either screwing into an eyelet, or attaching to the rear wheel axle.