Quote:
Originally Posted by Phyrxes
One idea is to fix one end as a point of rotation and use a lead screw to adjust the other end.
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This by far is probably the easiest way to change the elevation to a know point. Pneumatic pistons could work but there would be more guessing involve? Anyway, check out throwing machines like baseball pitching machine, football thrower, artillery guns, and even skeet launchers.