Thread: Out stretching surgical tubing.
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Unread 10-04-2014, 22:29
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Re: Out stretching surgical tubing.
The curious thing we discovered about stretching surgical tubing is that the restoring force decrease by about 10% for about 40 seconds to a minute after it's stretched. We get the most catapulting force if we stretch it and release it immediately. We suspect this was throwing off our two ball autonomous.

I'm guessing this a thermal effect. Rubber produces heat when stretched. It then cools to room temperature but rubber expands when it cools so less restoring force.