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Hello out there. Earlier this year I fitted a Tongsheng TSDZ2 mid motor on my old Nihola Cargo bike, which was not without problems. Thread about the old bike here: https://www.pedelecs.co.uk/forum/threads/just-fitted-a-tsdz2-on-my-cargo-bike-now-gearing-is-wrong.38259/page-2#post-577143...

Hi guys I am all new to this electric bike stuff. I have a Nihola cargo bike, which I have fitted a Tongsheng TSDZ2 mid drive motor on. My gearing before the Tongsheng TSDZ2 was 33/19, with SRAM S7 internal gears. The TSDZ2 has a 42t chainring, and now my highest gear feels like the lowest...