Does Johnston deal with the public, or are they wholesale only? Ran into that before, with Acklands/Granger. They were pretty prickish about it too.
White acetal? Isn't that what crosman uses for check buttons, and stem seal?
Regards,
Doc Sharptail
Does Johnston deal with the public, or are they wholesale only? Ran into that before, with Acklands/Granger. They were pretty prickish about it too.
White acetal? Isn't that what crosman uses for check buttons, and stem seal?
Regards,
Doc Sharptail
"Ain't No Half Way"
-S.R.V.
Johnston will deal with the public...your money spends just as well as anyone elses....go figure. :)
The Acklands/Grainger locally does business with whomever walks through the door. Order my low head SHCS from them. Not official policy, or perhaps my store has smarter management......
The check "buttons" in a pumper? The ones I've seen are teflon....I've never seen a delrin stem seal that was "factory" either. The newer stem seals seem to be some sort of injection moldable plastic, not sure what it is, but it's too soft to be nylon. Did get some "old school" stems from AB airguns a long time ago...they had a brass head with a teflon seal.
If you need some 1/2" white delrin/acetal shoot me a pm.
Al
I'm just looking for 1/4" delrin rod that I can drill and cut into transfer ports for the 78 series. Pretty simple stuff, actually. I think I found what I want on the Johnston Plastics site.
I should get out and get a set of numbered HSS drills while I'm at it.
Regards,
Doc Sharptail
"Ain't No Half Way"
-S.R.V.
IMO, teflon is a far better material for transfer ports than delrin....going to be difficult to get it "just right" without machine tools.
Suggest you undercut one or both ends with a countersink or large drill bit...that'll help with establishing a seal and not having it crush. Hold the part in split wood blocks for drilling/undercutting.
Al
So, another voice of experience speaks.Great!
I do have access to a so-so drill press. I've done some crude machining with it- cutting spring steps on valve stem bases, making brass pistons, etc...
The idea is to get port restriction, in a simple manner.
Would teflon be easier to work with?
Johnston is selling AC-2 Delrin, which is 22% Teflon...
Regards,
Doc Sharptail
"Ain't No Half Way"
-S.R.V.
Thanks, guys. I'll try with the Teflon...
Regards,
Doc Sharptail
"Ain't No Half Way"
-S.R.V.
38T04190817.jpg
Believe those seals are a high durometer urethane...would likely try teflon if the proper material cannot be sourced. IIRC, Len was able to get urethane rod to machine into springer piston seals. Not sure where.
Could pop over to the FT forum and ask him???
Al
Posting Permissions
Reply With Quote