On one hand, I see converted mid-range hardtail mtbs running 5.5kw peaks and handling it... adequately.
On the other hand, I see people on hardtails (with double torque arms) saying their rear drop outs/chainstays broke after running peaks of over 60A. Not the occasional axle chewing them out with torque, but from the mere unsuspended weight of the direct drive hub motor.
There's another possibility to consider though: with the crappy driving norms in my country, it's very common to see people take the cheapest ebikes with dirt cheap forks and ride off sidewalks at 20mph/35kmh as if they're riding a dirtbike, so driving style might be the reason for this.
I want to run 60v with 50a peaks on my Townie 21d, I've already seen on youtube people running 72v systems (45A controller) on the very same bike and going 45mph/75kmh with stock tires and v brakes, so you can say much worse stuff has been done in the past.
Mine has a Suntour NEX fork which might be simple but it softens the ride really well. Of course, I'm gonna install double torque arms and wider tires, and no jumps, stunts, wheelies or anything!
The question is, will the frame handle it?
Thanks
On the other hand, I see people on hardtails (with double torque arms) saying their rear drop outs/chainstays broke after running peaks of over 60A. Not the occasional axle chewing them out with torque, but from the mere unsuspended weight of the direct drive hub motor.
There's another possibility to consider though: with the crappy driving norms in my country, it's very common to see people take the cheapest ebikes with dirt cheap forks and ride off sidewalks at 20mph/35kmh as if they're riding a dirtbike, so driving style might be the reason for this.
I want to run 60v with 50a peaks on my Townie 21d, I've already seen on youtube people running 72v systems (45A controller) on the very same bike and going 45mph/75kmh with stock tires and v brakes, so you can say much worse stuff has been done in the past.
Mine has a Suntour NEX fork which might be simple but it softens the ride really well. Of course, I'm gonna install double torque arms and wider tires, and no jumps, stunts, wheelies or anything!
The question is, will the frame handle it?
Thanks