[TheForge] Power hammer questions

[theforge@mailman.qth.net]

On Sat, 22 Mar 2003 13:54:48 -0900, you wrote:

>According to Massey the answer is yes. In it's simplest form you could =
build
>a self contained power hammer with a single ball valve. You'd lose all =
but
>the reciprocating action though. I'd start with 1" - 1 1/4" valve and
>airways for a 100 lb hammer but it's a guestimate. I'm NOT an engineer I=
 can
>do simple arithmatic but that's about it.
 Just as a data point, a friend with a Spanish air hammer (~1cwt) has
air valving about that size. the rear cyl is ~6" and the front is
approx4/5". Air pressure developed is 15psi by the compression cyl.
These measurements are approximate, as it is a while since we measured
it.
Geoff