It is possible to learn fron Shiverlays and Harleys

[Don Coatney]

This is a very educational video.

 

http://www.macsmotorcitygarage.com/2015/04/23/video-how-differentials-work/

[TodFitch]

I believe that all the versions of that film on the web are copied from the Prelinger archives at the Internet Archive site.

 

There are a bunch of Jam Handy films there originally produced for Chevrolet that are interesting. Another one I like explains the front suspension pretty well.