Quote:
Originally Posted by llamadon
Wow this thread got a lot of responses, thank you all for your input!
In regards to the material: After seeing that the churro extrusion was probably not going to hold up in a high stress environment like a drive train (thanks to all of the input from you guys), we researched the different alloys of solid hex stock we have available to purchase. Now Vexpro has issues with being out of stock right when we need something, so we opted for McMaster. We chose the high strength 2024 alloy hex shaft, and will be using this for our drivetrain project. This shaft had the highest yield strength of all the shaft available: 47,000 psi.
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You also have the option of using
AndyMark 1/2 Hex that made from 7075, although not sure if it is -O, -T6, or something else.
Screws come even smaller, #0000 - 160 at Small Parts.They're about $4 each, and made by elves. - DonRotolo [more] 
08-11-2014, 16:31
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