[TheForge] Fly Press

Tue Mar 18 00:19:00 2003

The fine threads on the flypress are for the adjustable stop they are not for
the squish. The power in the press comes from the inertia of the flywheel or
arms with weights turning the screw.  If  I take the weights off on my flypress
I get considerably less power when I turn the screw.  The advantage of the
flypress over a hydraulic press is sensitivity, I don't know for sure if you
would lose too much sensitivity with a larger press as I have not used one, but
I do wish mine were bigger.  My press is not as powerful as a the  hydraulic
presses being discussed here,  for that I think you need a powered flypress like
the ones Kayne and Son have for sale.  There is a picture of my flypress on the
Photoaccess site in the shop pictures file.

John Newman

Shannell Sugrue wrote:

> Yeah I thought a fly press used the weights as momentum and when the dies
> hit the work the coarse thread "toggles" to a fine thread and presses the
> work, then you can use the leverage of the arms to press some more with your
> own muscle.
>
> ----- Original Message -----
> From: "Chris Worsley" <[email protected]>
> To: <[email protected]>
> Sent: 18 March, 2003 11:10 AM
> Subject: Re: [TheForge] Fly Press
>
> > What?
> > My fly press (an Adams #2) ram screws down as the overhead weighted bar is
> turned clockwise and goes up when I reverse the direction of the bar. One
> course threaded screw does it all. Sounds like what you are calling a screw
> press, but it is a "fly press" by all who know it.
> >
> > Chris
> >
> >
> > GHS wrote:
> >
> > > I think it might to be to your advantage
> > > to differentiate between fly and screw
> > > presses. A screw press is a one shot
> > > down and then manually bring it up for
> > > another try. In a fly press the flywheel
> > > actually screws the ram back up along a
> > > reverse thread and then returns it down
> > > when it reaches the top. As long as the
> > > flywheel is turning the ram keeps
> > > pumping.
> > >
> > > [email protected] wrote:
> > > >
> > > > All of the talk about forging presses ahs got me thinking about a
> press.  I am more interested in a Fly or Screw Press.  Mostly because I
> curently don't have any poser to the shop & the house is all solar power.
> Non-power tools are a bit easier to make use of right now.  Any body have
> any experience or thought regarding the Fly Press?  How big of a press would
> be useful for the average shop (I know it all depends, but a good starting
> point would be nice)?  Are there any advantages of a Fly Press over the
> Hydraulic Press?  Finally can a large Fly Press do everything a small one
> could do, or are they to much for the more delicate work?
> > > >
> > > > Thanks
> > > >
> > > > John
> >
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