Hello,
I'm not going to pretend I have any e-bike design knowledge, just a few gut feelings. I ride a Trek XM700 + and it's built
like a tank... For reference the bike is here...
https://www.trekbikes.com/us/en_US/...tric-hybrid-bikes/xm700/xm700/p/1982140-2018/
There's a line in the XM700+ specification run down that reads.....
"This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). "
Most of the conversations on this thread have been about motor, power etc as it should be. I'm concerned about stopping.
I've never had a bike with disc brakes, it took me a little time to learn the correct way to 'use' disc brakes on a long steep decent as to
avoid heat fade and this is on a bike designed by some of the best bicycle engineers in the business.
As mentioned by others the frame stress on an ebike is significant. If Trek limits there maximum combined weight to 300 pounds
on the XM 700+ which is rock solid where does that leave us 'backyard builders ? And yes, to save the skeptics the bother of bringing
up that the 300 pounds came out of the Trek Legal department. I'm absolutely not suggesting for someone shouldn't go the kit route.
In this specific potential retrofit, with the weight limits expressed, braking and safety would be paramount on my mind...Just a thought.
John from CT