Valve mod - pcp pistol

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   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.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Offline 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: Offline 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: Offline 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.