Re: Question for all the engineers out there


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Posted by Sherman in Idaho [24.32.202.166] on Thursday, July 11, 2013 at 14:19:12 :

In Reply to: Question for all the engineers out there posted by Dave Horvath [12.130.9.139] on Thursday, July 11, 2013 at 13:55:08 :

The theoretical answer is that it's stronger that way, to resist the horizontal component of the force on the bracket. Ideally, if you extended the line of the boom strut downwards, at every angle it could possibly be at, that line would go through cast iron all the way to the frame, so everything is stressed in compression and not in bending/tension. Following that theory, you should set it so that the geometry is as described so that the iron will always be in compression regardless of the position of the boom. Cast iron, like concrete, is stronger in compression than in tension.

Realistically, it probably had more to do with what worked out conveniently to clear everything in that particular design. Following that theory, you should set it so that everything fits and works the way it should without hitting on anything that it shouldn't.



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