[TheForge] Air cylinder stroke

Sat Sep 7 21:30:00 2002

        Dave,  If I did another Kinyon style hammer, I'd go just opposite
and go to a 12-14" stroke piston.  This would allow for greater open die
space.  An 8" would cut the 4 1/2" open die space to 3 1/2"..........that's
getting rather small.
          I'd shoot for a 14" and get the space up to 6 1/2" to work in.
          Making the limit switch adjustable makes for stroke length control
so you don't have to worry about using extra air......you just change the
limit switch to fit the stock your using.
        My two cents.

Ralph


----- Original Message -----
From: "Dave Brown" <[email protected]>
To: "TheForge" <[email protected]>
Sent: Saturday, September 07, 2002 5:25 PM
Subject: [TheForge] Air cylinder stroke


> I'm putting together the pieces of a Kinyon style air hammer.  The plans
> call for 1.5" to 2" by 10" cylinders.  I can get a couple of 1.5"x8"
> cylinders free.  I know the effect of going down to the 1.5" size (lighter
> hitting, maybe slower than a 2" with the same weight ram).  What effect
> will the shorter (8" vx 10") stroke have on the hammers action?  At this
> point I'm assuming that it will mean I'll have to mount the cylinder 2"
> lower and that in turn will reduce the opening between ram at the top of
> the stroke and the anvil top ... but what will that mean to performance?
>
> Dave Brown
> Heritage Smithing
> Green Bay, WI
> ABANA, UMBA, GoM, MODA, ARG
>
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