MacroFab's Engineering Podcast! Where Electrical Engineers, Parker Dillmann and Stephen Kraig talk about electrical engineering topics, DIY projects, and industry news. Sometimes cool people stop by the podcast to drop some knowledge.
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Testing Ratchet Wrenches
Wrench qualifications
Ratcheting Wrench
Non-Reversible
Zero-degree offset
½” hex
12 or 6 point
Have collected 20 ratchet wrenches so far
Why? Broke one and wanted to try out all the different styles and brands before buying a set
What are we testing?
Thickness of the wrench
How does it feel?
Max torque to either failure or cam out
Any other tests?
Thickness to torque rating
How much mechanism play
Measure ratchet dimension
How?
Quick tests show I need more than 100ftlbs but less than 250ftlbs of bolt torque
Load cells to measure the clamping force between 2 plates
Need a “screw” drive to handle the force
A normal ½” bolt is usually 5/16-18” which handles ~30ftlbs before pulling the threads
Two Paths
Take a ¾” bolt and machine the head into a hex
Take a ½” allen socket with a ¾” square drive and attach that to a bolt