Thread: paper: Team 33 Arm Design Paper
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Unread 13-01-2013, 19:03
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Re: paper: Team 33 Arm Design Paper
Thank you for posting these notes. I have been working on a similar design, and seeing your design paradigm makes me think I'm going on the right track. One quick question, however. What diameter and material did you use for your final axel of rotation. (The one with the very large sprocket on it). Testing my design yesterday, I ran into a material failure that has me worried. Lifting 180 pounds, 9 inches from the point of rotation, my 1/2" 4140 steel shaft with a 1/8" keyway failed. The shaft ultimately twisted about 120 degrees from where it started (straight!!!). Any insight would be greatly appreciated!

P.S. Amazing design and engineering on that arm! I currently have arm envy!
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