piston spring, I haven't made the hammer yet

problem solved by sandpapering the piston a little and by replacing the spring with a stronger one. triggering system is next

the modification looks like this I attached the tank to the chamber, and as a pilot I used a slightly different type of Schrader valve used in my line of work. The problem is that once I fire it goes boom like expected, :D , but after the piston does not shut instantly, and it goes like "sssssssshhh...

Hy there, it's been a while, since I worked on my BLD3 hammer-valve project. I replaced my steel qev piston with a plastic one, much more light than the previous one, with a better fit; also added a spring behind it. overall I feel a much better performance than before(better BOOM sound), and also l...

the last post on this thread is from 2011 ... I don't think anyone will answer

thank you for your thoughts, I appreciate the compliments.
Again "Brian the brain" make a drawing please, my English is not that good an I get the technical terms mixed up.


Some damage shots:

it is balanced, just more pressure on the o-ring seals, so more friction

hammervalve

my latest work

P.S.
no auto recocking , my hammer spring needs to be quite tough to open the valve, so I think that the muzzle air will not be able to push the hammer back.

nice, keep it going

Brian the brain : put those toughts on a piece of paper please

to "Gippeto": Thank you very much for your help, like I said I already made the hammervalve, I had problems with the seal of the poppet, that's why I put the o-ring there (wich by the way is on the valve body and is more than 3/4 embedded in it - it does not get blown up - I tested it) . I know the ...

I'm still working on a plan for the ammunition reloading. I'm not planning to make the self cocking just yet, fist I want to see how it performs without the gas collector. I already manufactured the hammervalve still need to make the bolt and the barrel assembly (hopefully this week), before the tes...

edited first post. hope it helps