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Re: Surgical tubing stretched too far
Quote:
Originally Posted by nixiebunny
We have a catapult powered with surgical tubing on our bot. The tubing is stretched from about 5 inches untensioned to about 20 inches as the winch pulls down the catapult arm. That's a 300% increase in length.
During the Hub City regional, we suffered from frequent decreases in shooting power and had to re-tension the tubing several times over the three days, and we ended up replacing some of it. I suspect that the tubing is being stretched past its elastic limit. It displays "stretch marks".
We can modify the bot's superstructure to allow for a much longer untensioned length on the tubing, reducing the extension from 300% to about 100%. Does this sound like it will solve the tubing over-stretching problem?
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Go with spear gun tubing...the stuff is great.
http://www.amazon.com/Speargun-Sling...peargun+tubing
__________________
Keegan Harrington
Truck Town Thunder
2013-2014: Mechanical Design
"Infinity: you empty out all of the coffee and there is still more orange juice"
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I don't think we should only be pointing at those with exceptional bots, but those that we consider a role model team in all aspects, not just in technical design - tribotec_ca88 [more] 
11-03-2014, 07:28
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