[TheForge] Air hammer return stroke

Sun Feb 2 21:01:01 2003

I'll second that. I'm not sure about valve springs- the automotive ones I looked at were too small. A good, flat wound die spring is 20-30$ in MSC or mcmaster carr. What's interesting is the one I put as a return on my hammer is rated at 1500lbs. You won't even budge it, jumping up and down on it but the ram can compress it no problem when it gets going. You can time the throttle to use that rebound for a nice hard single blow.

Steve Howell
Seattle

-----Original Message-----
From: Phil [mailto:[email protected]]
Sent: Sunday, February 02, 2003 3:26 AM
To: [email protected]
Subject: Re: [TheForge] Air hammer return stroke

I used an automotive valve spring the first time (1972 small block chevy) and it started to lose it's "spring".  I found some die springs in the McMaster Carr catalog and they work great.  They are a little more heavy duty, and you can get them with various inside diameters, and heights.

Phil Rosche
Summerville, SC

>Get a 'valve spring' from your local big truck repair place.
>dave m
>
>
>> A spring is what I had in mind, per my first email. I haven't figured 
>> out a good way to use an air cushion. Ideas welcome.
>> 
>> So the problem is that it takes quite a spring. Springs are expensive. 
>> Anyone know of an inexpensive source?
>> 
>> Steve Smith
>> 
>
>
>_______________________________________________
>http://mailman.qth.net/mailman/listinfo/theforge
>theforge mail list group photo site is
>http://www.photoaccess.com
>Login:  [email protected]
>password:  anvil
>___________
>
>
_______________________________________________
http://mailman.qth.net/mailman/listinfo/theforge
theforge mail list group photo site is
http://www.photoaccess.com
Login:  [email protected]
password:  anvil
___________

--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---