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The cold weld seems to be holding up after 800 miles, maybe because I never risk using the 4 or 5 assists. I can out run any tire biter in the valley on +2. But I worry about the old 2012 controller being unsupported so I'll definitely keep you in mind. Could a later ver. controller be made...

The axle was not designed big enough for the torque. If the axle breaks the motor is toast, so after the original axle got baked into their design, the band aid was a 2X sacrificial torque arm. The tiny cylinder that fits into the chain stay acts as a shear pin. That's why the arm is so...

It took over 4 hours and I had to measure so often I may have ruined my caliper. Tire puncturing turnings flew all over. It's a snug fit now but I plan to check it in decreasing frequency, 5 km, 50km . . . and just go to a machine shop if it starts to wiggle more than a couple degrees. The...

I'll check to see if there's a bed frame somewhere. Sometimes it's amazingly hard to find something so simple as a 4 mm thick plate. Then pack common drill bit sizes onto the template area and use a small drill press and dremel cut off wheel.

Correction: These bikes came as a kit. The consumer just assumes the right stuff got into the right kit. I guess there were a lot kits where the 10mm torque arms didn't fit on the 11mm axles so they figured it out right away.

These bikes were assembled in Belgium with an 11 mm torque arm. (See photo of broken torque arm.) At higher assists the slack between axle and torque arm allows a build up of enough angular momentum to ream the torque arm when it engages. The axle then reels up the wires ripping them out of...