https://www.universalgripco.com/#!astm-e23/zkr7j
A quick strain map video of a Charpy Impact Test performed on an Impact Tester from Universal Grip.
Part 2 in our series on how to completely teardown a Lambretta Series 1-GP engine.
This particular video deals with removing the rear hub and how to properly use pulling tools to ensure a long life for your tools.
https://pistonported.com/