Valve mod - pcp pistol

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   First bit of progress here for a while.
I have made a start on what I call the cocking plate. This is part of the bolt lockup very similar to what I have done on another build.

Bolt will be straight pull, but be spring loaded and will lock into and locate into place being held captive when loaded.

It just a piece of mild steel, but I squared it up in the mill and countersunk the 4 screws that will hold it in place.

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Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Online Posts: 1561	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 09 Feb 2025 at 2:47pm
	First bit of progress here for a while. I have made a start on what I call the cocking plate. This is part of the bolt lockup very similar to what I have done on another build. Bolt will be straight pull, but be spring loaded and will lock into and locate into place being held captive when loaded. It just a piece of mild steel, but I squared it up in the mill and countersunk the 4 screws that will hold it in place.

RangerPete Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Apr 2023 Location: Cambridge. Status: Offline Posts: 976	Post Options Post Reply Quote RangerPete Report Post Thanks(0) Quote Reply Posted: 09 Feb 2025 at 3:14pm
	Looking good, cant wait to see it when its all finished.
	Walk quietly, but carry a big stick.

Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Online Posts: 1561	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 11 Mar 2025 at 10:06pm
	very firable now. I have completed the cocking lockup mechanism now and it's shooting really well. I fired about 6 shots over the chrony and got a fairly consistant 21 - 22 fpe from a 26 grn pellet. Next I am looking for a compact red dot/holograph sight for it. I won't make rails, but will attach the sight directly to the breech. Here's a link to a short video. https://youtube.com/shorts/naeNdHIvOVo?si=UgD87Ts6zoEL3e7s

jwabfrog Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 Nov 2021 Location: Thames Status: Offline Posts: 155	Post Options Post Reply Quote jwabfrog Report Post Thanks(0) Quote Reply Posted: 12 Mar 2025 at 12:42pm
	Very cool Paul, you are a talented engineer!

J-S Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Senior Member Joined: 20 Oct 2014 Location: Auckland Status: Offline Posts: 453	Post Options Post Reply Quote J-S Report Post Thanks(0) Quote Reply Posted: 12 Mar 2025 at 1:24pm
	That’s awesome.
	J S Airguns Air Arms TX200('s) Theoben Sirocco HW77 FWB 300s Webley Patriot One or two others... Current projects: Too many..

Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Online Posts: 1561	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 9 hours 33 minutes ago at 12:27am
	I have been chipping away on this pistol and I am pretty close to completion. I have tried making 3D printed cosmetic additions, but they aren't quite right. Of course I would show photo's, but don't know if we have that sorted yet. But, I did beef up the hammer length by adding an adjustable striking surface. I filled it to around 1500 psi and it pushed a 25 grn pellet at 706 fps, which equates to just over 28 ft/lb. I don't think I will get many usable shots at that, but I am really pleased with that as a result, as it means I have made the valve breath well enough to do that. I have a small red dot to mount on it now and accuracy testing to come next. I will load photos when I can.