Quote:
Originally Posted by cstreit
I'd like to see a stress analysis of this. Wouldn't the top and bottom be receiving equal force if the jaws are tight?
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I don’t think so. Rotating the wrench towards the movable jaw creates a moment at the tip of the jaw. Rotating away from the movable jaw creates a moment at the base of the jaw. The moment arm from the tip of the jaw to the pin that the adjuster barrel rotates is longer than the moment arm from the base of the jaw. The extra bending force against the pin is more likely to bend the pin and mess up your wrench.