I am about to start, using a Bafang BBS02B Mid-Motor on a 7/21 Speed, Genesis V2100 Mountain Bike. How do I handle the 3 speed cassette/chain ring combination on the bottom bracket itself? I made this video to ask my question: https://youtu.be/iKDjPEXTFWQ
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Installing a Bafang BBS02B mid-motor on a 7/21 Speed Genesis V2100 Mountain Bike: How to handle the 3 different speed chain ring/cassette?
Installing a Bafang BBS02B mid-motor on a 7/21 Speed Genesis V2100 Mountain Bike: How to handle the 3 different speed chain ring/cassette?
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You don't need 3 chain-rings whern you have a mid-drive. Especially a 750 W motor. & is plenty. I rarely use the 2 bottom gears (1 and 2) on my BBS02, and I have aan aftermarket 50 tooth chainring which is much larger than stock