Hello,
I read/heard users with a Bafang OEM mid-drive (eg. M400) complaining that the assist is too weak when riding steep hills on a cargo-bike, either longtail or front-loaders.
When selecting the strongest assist level (5) and the smallest gear (ie. biggest sprocket) for maximum torque, they end up spinning fast… which is understood by the torque sensor to mean they don't need much help: As a result, they spin like crazy… with the bike riding very slowly uphill.
As a work-around, choosing a bigger gear than they would on an acoustic bike makes the motor work harder, depletes the battery faster and wears the transmission needlessly.
Are OEM Bafang mid-drives (ie. not the BBSx kits, that have no torque sensor) simply not a good solution for cargo-bikes in hilly terrain? Or can it be done by editing its configuration — provided it's user-accessible?
Thank you.
I read/heard users with a Bafang OEM mid-drive (eg. M400) complaining that the assist is too weak when riding steep hills on a cargo-bike, either longtail or front-loaders.
When selecting the strongest assist level (5) and the smallest gear (ie. biggest sprocket) for maximum torque, they end up spinning fast… which is understood by the torque sensor to mean they don't need much help: As a result, they spin like crazy… with the bike riding very slowly uphill.
As a work-around, choosing a bigger gear than they would on an acoustic bike makes the motor work harder, depletes the battery faster and wears the transmission needlessly.
Are OEM Bafang mid-drives (ie. not the BBSx kits, that have no torque sensor) simply not a good solution for cargo-bikes in hilly terrain? Or can it be done by editing its configuration — provided it's user-accessible?
Thank you.
