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Big Boy Fly Presses

Big Boy Fly Presses
These machines are currently being imported by Grant Sarver of Off Center Products
Fly presses are a type of screw press. A flywheel attached to the screw produces the forging force. Early fly presses were manualy powered by a pole that hung from the flywheel. These are heavy motorized units with a reversing mechanisim (the two vertical wheels). The force of stopping the flywheel would produce a theoreticaly infinite force but the heavy frames actually stretch just enough to prevent this. These presses excellent for coining operations or closed die forging.


You got the description pretty good. 'Cept they ARE wonderful open die forging machines too. The opperator has infinite control over the power, speed and stroke. All of the traditional steam hammer opperations like butchering, punching, cutting, sidesetting, etc. are done with decieving ease. Not the machine for drawing though, nothing quite like a hammer for that. They ARE, as Jock states (above) great coining and die forging machines.

I almost forgot to mention one of the more compelling reason people like a fly press: they are QUIET! Also the size that will outperform a 300 Nazel (in the opperations it's suited to) runs on a 3 hp motor!!

Copyright © 1998 by Jock Dempsey, DEMPSEY'S FORGE
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