Yes, it seems Bafang never intended the Ultra to be used on standard EBikes, it was designed specifically for Cargo Ebikes. But many companies said let's put the biggest best Bafang motor on our Ebikes, which could explain why the stock programming was always bad. The M600 was designed as the best motor for Emtb and anything else, programming wasn't bad, but could be improved on, and they were louder than they should be with all steel gears.Not familiar. What failed with the Ultra?
Never mind. I figured it out. You're referring to the new gear. I thought you were talking about a frame failure or something.
So with an M600 and aftermarket controller, we have a powerfull quiet motor with a controller that we can configure/get away from the junk OEM settings. Sounds like a winner from where I'm sitting....
A custom controller with 120Nm and a version 2 Peek quite gear might just be the sweet spot in the industry for power, weight and reduced noise.
Waiting for feedback on first adopters, the first generation PEEK gear had some failures on the Luna Ebikes in the M600. V2 is holding up.