Valve mod - pcp pistol |
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Pauly5
Forum Moderator Joined: 10 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1323 |
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Well I tried cutting one of my donor screw drivers and it was hard. The hacksaw had trouble biting into it. It made a small nick, so I just put it in the vice and it snapped on the nick.
Doing pest control I was always up in ceilings and sparkies often forget stuff and they do like to have expensive screwdrivers which are decenyly hardened. So I have a couple I can wreck. So this will be my valve stem. |
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RangerPete
Senior Member Joined: 18 Apr 2023 Location: Cambridge. Status: Online Posts: 719 |
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Good luck with that 😂
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Walk quietly, but carry a big stick.
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Pauly5
Forum Moderator Joined: 10 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1323 |
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Slowly doing stuff.
NZ Post has botched up Nunga's foundry delivery, so valve on hold. I bought a piece of 3.9 mm piano wire today. Pretty hard, and hopefully harden up, but I might try that for the valve stem. I also decided to use the .25 cal FX barrel I had. It was off a Bobcat. I cut it down and reduced the breech end to fit into what will be the breech block for this build. Fits nice and snug with no movement. FX only rifled the last 2 or 3 inches of these barrels and you can see that they make the muzzle smaller diameter to do this, then thread on a piece to match. You can see the marks on the outside where they "squeeze" the rifling in giving it a "smooth" twist. |
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RangerPete
Senior Member Joined: 18 Apr 2023 Location: Cambridge. Status: Online Posts: 719 |
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So how long are you planning on making the barrel?
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Walk quietly, but carry a big stick.
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Pauly5
Forum Moderator Joined: 10 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1323 |
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Barrel is around 300 mm, so not a small pistol.
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J-S
Senior Member Joined: 19 Oct 2014 Location: Auckland Status: Offline Posts: 388 |
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very cool
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J S Airguns
Air Arms TX200('s) Theoben Sirocco HW77 FWB 300s Webley Patriot One or two others... Current projects: Too many.. |
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