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  1. stumpedinoz

    cargo bike conversion

    The Tongsheng TSDZ2 looks similar to the Bafang BBS02 install. Just slide the motor through the bottom bracket shell, install the bracing plate and lockring on the non-drive side and you're done. As the shell width is 70mm not 68mm you'll need 2mm of washers between the bracing plate and the...
  2. stumpedinoz

    cargo bike conversion

    Thanks everyone. Success. I just had to be more firm with the hammer. Motor is on and functioning well. Chainline is a little wide but within limits. For a chainring smaller than 44 there can't be much offset inboard as the diamter of the chainring is smaller than the diameter of the drive...
  3. stumpedinoz

    cargo bike conversion

    Hi himupstairs. I have a Gazelle Cabby and a Bafang BBS02 mid drive unit. I have run into trouble trying to remove the original bottom bracket. It seems to be a unique press fit design that I haven't seen before. I've only ever seen square taper as a threaded interface. Can you tell me how to go...