Electric Bicycle

e bike

Brake Disc Hub
Details of the Hub including a CAD file of same...

What are the measurements/dimensions of the bike wheel hub that is designed to have a brake disc bolted to it?

As you know, I bolted a mini-moto sprocket to a bike hub. The sprocket was #25 chain OK, but had three holes and a central hole that was too small to go over the hub/axle assembly.
After boring out the center hole until it would fit (this dimension will vary between hub manufacturers), I measured the holes on the hub and found these dimensions:

MTB Hub

Download the autocad file here.
Download a PDF version here.