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Unread 23-02-2007, 12:21
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Re: Balancing an arm that starts down?

If you use constant force springs, you can more easily tune the force to an extent so that it will basically stay in whatever position you choose to put it in. Or, in the same respect, though not as effective, you could tune any sort of regular spring balance so that it still assisted the arm, but would no have enough force to swing the arm out of place at start.

Search for constant force in Mcmaster.


If you just want a latch to hold the arm down at the beginning of the match, you could try a leaf spring pressed against the side of the arm. Any arm would be able to simply pull past it if you wanted to deploy.
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