Torque spec ; 12x10 axles

harrys

Pedelecer
Dec 1, 2016
215
31
70
Chicago, USA
I've always done it by feel with a 17mm or 18 mm wrench about 10 inch long. The other day I found my 3/8" clicker torque wrench, so I decided to torque the nuts on a 500W Bafang in a steel fork.

What's a good number for a 500W motor? I'm using 40nm here. Seems kind of high. My other bikes, some steel frame, others aluminum, are probably closer to 30 than 40.

.