Air Arms Tony Leach O-ring conversion? Or HW 45 seal

Jump to latest Follow Reply
That's a good question JP.
I'm surprised you just didn't ball up some duct tape and zip tie it on the nose of the piston!🤣 Does the TL piston have a dovetail for the seal or is it straight cut like the HW45?

Not to hijack your post, but since I recently got a TX200HC set up with a Tony Leach 22mm skirted piston, I've wondered what improvements or modifications people have done on the kits. Especially spring changes or possible piston seals substitutions.
 
Upvote 0
Hobbyman2007 said:
The 45 and P1 do much better with a shortened spring and increase in compression chamber.
Click to expand...
I already have the P-1, a new spring and a new Aussie Seal. How much did you shorten the spring and how do you increase the compression chamber.

Perhaps a bigger question is how is the accuracy at that power?
 
Upvote 0
I took two coils off the spring and to get more compression chamber volume I took some of the material off the plug on a lathe. I don’t have my notes with me but I seem to recall 2mm. Also added a small channel in the face of the plug to direct the air into the transfer port. The pistol has a less harsh shot cycle than factory. Don’t forget to size the pistol seal. I found the Aussie seal to be a little on the big side.
 
  • Like
Reactions: Mycapt65
Upvote 0
O-ring type seals on spring pneumatic air guns are short lived !!

O-rings can move dynamically but can & do roll within there containment groove/channel under high speed dynamic motion. They are also bias to fret on the surface of contact if not rolling and killing the seal they might be making otherwise.
An o-ring is just not designed for that type high speed cyclic dynamic motion.
 
Upvote 0
You must log in or register to reply here.
Top Bottom
Back
Home
Forums
Resources
Menu