Bafang Ultra.Reduce assist level 1 to 1/2?

offtheback

New Member
Aug 25, 2022
2
0
USA
Have a Bafang Ultra on an HP Velotechnik Scorpion FS.when I try to ride with friends on upright bikes level 1 of assist is too high.Is there a way to hack the controller to provide a level of 1/2 even if instead of having levels 1-9 I end up with 1/2-4 or so?
 

Mabman

E*POWAH Elite World Champion
Feb 28, 2018
1,126
1,856
Oregon USA
Have a Bafang Ultra on an HP Velotechnik Scorpion FS.when I try to ride with friends on upright bikes level 1 of assist is too high.Is there a way to hack the controller to provide a level of 1/2 even if instead of having levels 1-9 I end up with 1/2-4 or so?

It depends on the version of Ultra, or M620/G510, you have whether it is a UART, a little older, or CanBus, newer. If it is UART you can get a programming cable that will allow you to do exactly what you seek to do. If it is CanBus at this time it isn't.
 

offtheback

New Member
Aug 25, 2022
2
0
USA
It depends on the version of Ultra, or M620/G510, you have whether it is a UART, a little older, or CanBus, newer. If it is UART you can get a programming cable that will allow you to do exactly what you seek to do. If it is CanBus at this time it isn't.
Thanks so much for your reply!
 

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