Torque Arm Upgrade

[diverdon]

 
     Hello , Seems like forever since I have even had anything to ask about .. The 1000 watt Magic Pie Front motor has been working perfectly .. Finally after I don't know how long 1-2 years .. I noticed little clunk sometimes when I braked or gave it some power ..  Sure enough the Right side axle nut had backed off a little .. I had it double nutted and marked so I could see if it moved ...
      I retightened it for sure over the torque spec but being careful as the threads on the motor shaft don't go all the way around "weak?" .. So I double nutted it again .. used some locktite this time ..
     I am using a Grin Tech Torque Arm .. 1 on each side .. Has anything better than them come out ? One of them seemed to fit the axle better than the other .. I wish there was a "file to fit version" .. Anyhow probally worried about nothing .. I ride this bike at least an Hour allmost every day ... Thanks for you Time and help ..

[Bikemad]

Hi Don,

The Grin Tech torque arms should be fine as long as everything is tightened up sufficiently.

All my converted bikes have steel dropouts and I have never used torque arms. On my High Power Magic Pie I used longer modified car wheel nuts to ensure that the threads did not strip when tightened really snug.

If both of your axle nuts were done up to ~80Nm (59 ft/lbs) before adding the additional locking nuts then the axle should not be able to twist within the dropouts.

Alan