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Unread 02-03-2011, 21:42
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AKA: Patrick Freivald
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Re: resetting window motor driven arm after each round

Quote:
Originally Posted by Da Kid View Post
in a related matter, what would the gear ratio need to be for a denso window motor to rotate a 10 lbs, 50 in. arm that extends to 62 in? we want it to not put too much strain so that the thermal breaker doesn't get tripped. we do have a spring on the arm so that makes it a little easier, but what would the gear ratio be without the spring, just to be safe?
That should depend largely on how quickly you intend the arm to rotate.

There is a relationship between torque and power that isn't more than algebra to compute... Do the math -- an engineering mentor or physics teacher can help!
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