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Old 02-26-2013, 10:21 AM   #19
Irvin
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Join Date: Mar 2007
Location: Marietta, Ga
Posts: 10,361
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Quote:
Originally Posted by diredesire View Post
Ah, the pains of traditional dropweight stringers I wish a mechanism like this was easy to design ...
What's so complicated? Seems to me you need a longer arm and a gripper that is always fixed to the radius of the point where the string goes to the racket is say 1/10th the radius of the arm at any angle. If you have a 6 pound weight (weight and bar) then you have 60 lbs. Automatic drop weight pure and simple.

But what you have is a fixed distance on the rotating device at the gripper. The effect length of the weight continuously changing above and below the bar so you leverage changes. I am not an engineer but that's not hard to figure out.

EDIT: BTW the reason for the longer bar is so you have more travel and you don't have to regrip the string.
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Balance - 31.0 cm, Weight - 358 g, SW - 346 Kgcm^2

Last edited by Irvin : 02-26-2013 at 10:23 AM.
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