I didn't read the cargo bike part, I wouldn't get the 6k motor unless I was doing over 2000w and over 4000w peak... not sure if a cargo bike needs that in his case. You can get plenty torque if you gear it to 42kph max speed and up to 50kph field weakening. At that setting without a load going up a hill he should be able to do a wheelie and flip over before he runs out of power. I would however get the steel cogs for an application like that, the only benefit would be copper mass, which depends on what climate he rides in. If it's a warm country and he can accommodate the motor in the frame sure go for it.DingusMcGee wrote: ↑Mar 14 2021 12:44pm"...quite wide...?" I don't get it Tommm. He says he wants cargo bike which could be an ebike with a not so low Q-factor. Is a small increase in motor width much of an issue when pulling cargo?
You ask, "other issues"? Maybe $$. Can you make a motor frame? Look into a QS 1000 or QS 2000 motor and controller. But installing the Cyclone 6K kit is mostly a plug and play situation.
The QS motors even the 1kw are a step up again in potential. I really don't think they are meant for bikes, maybe EEB style ones with moto wheels and a 4kwh battery and all.