Looking for recommendations on motors to investigate. Ideally specific models with reliable supplier links, I am in the US.
You could also just shout out brand / mfg if you don't want to spec a model#.
Will not say price is "no object", but robust build quality is more important.
DD hub motors only please, ideally those suited for either front & rear (possible 2WD rig), but whatevs, **please** avoid the "front dangerous" issues, well aware. Same with advice wrt gearing, mid drive motors etc, please refrain for now, this thread is for **DD hub motor** reco's and related info only, please.
Use case is tandem / cargo, 500lb total, from sea level up into high mountain country, e.g. CO / UT.
26-29"/700 2" minimum, maybe even 3" or fatties, gravel trails, desert BLM and forestry roads.
Edit: obviously as tire gets fatter, reduce rim diameter. Maybe a truly plush bouncy ride would allow to reduce total diameter to get more torque back? Pretty sure no other suspension. . .
So obviously low-end torque is the top priority, will need a robust steel frame, and I'm planning on ultra strong wheels & fork, double torque arms etc to handle the high torque.
Top speed desired is 20mph max, even on the flats, will usually be keeping under 15mph.
Wh/mile range efficiency, optimized for say 12-15mph on smooth flat roads, is **critical** , for desert travel, that and robust build quality, reliability,
I also need lots of range, survival may be at stake
So the motor: looking for 4,000W (minimum) **actual continuous** in cold ambients without breaking a sweat, really 5k would be better.
True this is joyous overkill, even while climbing hills I likely will run under 2500W, 99.9% of the time.
But extra margin is needed for hotter weather / steeper mountain passes / extra human aboard, etc, plus added longevity for usually maintaining a high margin of overhead and lower stress on the motor.
Furthermore, Dogman Dan says maintaining 15-18mph while climbing is important for efficiency & reducing the motor's waste heat. It will take "some time" for me to get fit enough to keep a good cadence at human-power-helping to get up over the big passes.
A Grin CAv3 will de-rate as needed to protect the motor, temp sensing etc.
You could also just shout out brand / mfg if you don't want to spec a model#.
Will not say price is "no object", but robust build quality is more important.
DD hub motors only please, ideally those suited for either front & rear (possible 2WD rig), but whatevs, **please** avoid the "front dangerous" issues, well aware. Same with advice wrt gearing, mid drive motors etc, please refrain for now, this thread is for **DD hub motor** reco's and related info only, please.
Use case is tandem / cargo, 500lb total, from sea level up into high mountain country, e.g. CO / UT.
26-29"/700 2" minimum, maybe even 3" or fatties, gravel trails, desert BLM and forestry roads.
Edit: obviously as tire gets fatter, reduce rim diameter. Maybe a truly plush bouncy ride would allow to reduce total diameter to get more torque back? Pretty sure no other suspension. . .
So obviously low-end torque is the top priority, will need a robust steel frame, and I'm planning on ultra strong wheels & fork, double torque arms etc to handle the high torque.
Top speed desired is 20mph max, even on the flats, will usually be keeping under 15mph.
Wh/mile range efficiency, optimized for say 12-15mph on smooth flat roads, is **critical** , for desert travel, that and robust build quality, reliability,
I also need lots of range, survival may be at stake
So the motor: looking for 4,000W (minimum) **actual continuous** in cold ambients without breaking a sweat, really 5k would be better.
True this is joyous overkill, even while climbing hills I likely will run under 2500W, 99.9% of the time.
But extra margin is needed for hotter weather / steeper mountain passes / extra human aboard, etc, plus added longevity for usually maintaining a high margin of overhead and lower stress on the motor.
Furthermore, Dogman Dan says maintaining 15-18mph while climbing is important for efficiency & reducing the motor's waste heat. It will take "some time" for me to get fit enough to keep a good cadence at human-power-helping to get up over the big passes.
A Grin CAv3 will de-rate as needed to protect the motor, temp sensing etc.