Difficult Dropouts

[skyloon]

I attach 3 pics of the dropouts from my FS bike. Its an all alloy rear triangle with a replaceable hanger, the outside faces are flat but the inside faces have an indentation. I want to fit a rear wheel motor and my question is which kit system with which torque arms would work best with this frame?

 

[Deleted member 4366]

They look a bit shallow. Filing them deeper would help, but that's not straightforward because of the hanger design. I think I would make a new hanger out of 6mm steel and run the top horizontal without the step. That means dremmeling off some of the aluminium from your frame. You might be OK just filing them a bit deeper for a 250w motor. What motor do you want to fit?

 

[skyloon]

Probably will fit an ezee kit. What about torque arms secured by a small bolt on the dropout about an inch away from the axle?

 

[Deleted member 4366]

The Ezee kit comes with some sort of torque arms. It's possible that they can be adapted to fit. If not, I think maybe you could just put a bit of 1/4" steel plate over the top of the hanger. You could use the two hanger bolts to fix it - probably need longer bolts. Use an angle grinder to grind out the slot. On the other side, you could use the Ezee one - just need to drill a hole to bolt it in place. It would be easier to see the best solution when you have the motor in place.

 

[flecc]

The original eZee front anti-torque arm adapted well to rear use as here, but I don't know if they still supply these: