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  1. Ferrobiker

    Change the gear ratio of a e-bike.

    Thanks for your information!. So, the wheel circunference is related with the gear ratio?. in this case, you can play with it between two values (min-max), and replace the 15th with a 18th without error. it would be great if there was a gear ratio calculator to change the values and they were...
  2. Ferrobiker

    Change the gear ratio of a e-bike.

    Sorry, but I'm afraid that I haven't explained properly. I have read in other forums that changing the gear ratio of a e-bike is not possible, because the motor software has been factory programmed on each e-bike model to a certain gear ratio. For example, If you change the rear sprocket 11-42 /...
  3. Ferrobiker

    Change the gear ratio of a e-bike.

    Hi, my bike mounts a BOSCH PERFORMANCE CX LINE (2017) motor; it have a 15 teeth sprocket in the motor and 11-42 sprocket at the rear wheel. Is it possible to change the gear ratio of a e-bike to increase speed? (for example, putting a 18 sprocket instead of 15). People said that the Bosch system...
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