This 14-speed IGH has a hard limit spec'd of 130 N.m
There apparently are shear pins acting as "torque fuses" to protect the unit, but obviously it would be better to avoid depending on that, likely very inconvenient if you're miles from home when that happens.
I'd like this thread to serve as a reference for this specific topic.
Reference use case for me is: very low top speed is fine, all about torque at low wheel rpm
heavy cargo/tandem rig maybe 400-500#, gravel / fire roads,
mountain country, so very long steep climbs.
Assume a powerful mid-drive, at least 1000W rated, 3-5000W peak driving the pedal drivetrain at the BB, capable of shearing those pins at 130 N.m
There apparently are shear pins acting as "torque fuses" to protect the unit, but obviously it would be better to avoid depending on that, likely very inconvenient if you're miles from home when that happens.
I'd like this thread to serve as a reference for this specific topic.
Reference use case for me is: very low top speed is fine, all about torque at low wheel rpm
heavy cargo/tandem rig maybe 400-500#, gravel / fire roads,
mountain country, so very long steep climbs.
Assume a powerful mid-drive, at least 1000W rated, 3-5000W peak driving the pedal drivetrain at the BB, capable of shearing those pins at 130 N.m