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hammer for a hammer valve
Posted: Tue Nov 03, 2009 2:08 pm
by maverik94
Hey Y'all, I'm working on a .25 cal. multishot rifle. It's a PCP gun, and it uses a hammer valve as the one and only valve in the gun. Here's a picture:
Anyway, I need a springloaded hammer that hits the threaded rod on the right. I have experimented using a tube and a metal rod that's springloaded and it worked, but there's no way to really cock and fire it reliably. I have tried to figure out a good way to do this for a while, I have looked at diagrams of commercial pcp guns, and can't figure out how they do it. Does anybody have a way of doing this? I have done a lot of searching and I have not been able to find anything on this. Thanks!
Posted: Tue Nov 03, 2009 2:13 pm
by cannon monkey
ur image not working
Posted: Tue Nov 03, 2009 2:13 pm
by jackssmirkingrevenge
Posted: Tue Nov 03, 2009 2:17 pm
by POLAND_SPUD
what about the kind of valve used on SHARP innova ?
I am almost 100% sure it's not a hammer valve
Posted: Tue Nov 03, 2009 2:21 pm
by maverik94
The image works for me.... And thanks for the link jsr, but how is the hammer cocked?
Posted: Tue Nov 03, 2009 2:35 pm
by MRR
Click on the image. It's a flash animation and explained in detail.
Posted: Tue Nov 03, 2009 2:39 pm
by jackssmirkingrevenge
As above.
Does this help?
Posted: Tue Nov 03, 2009 2:44 pm
by Gippeto
Please note the "bolt" in the slot. It's attached to the hammer.
Posted: Tue Nov 03, 2009 2:50 pm
by maverik94
AHHHHHHHHHH Ok, I dodn't realize you could click on the words! Wow, that makes me feel stupid. Anyway, I get it. Thanks a lot. I will resond when I try this out. Thanks!
Posted: Tue Nov 03, 2009 3:06 pm
by jackssmirkingrevenge
POLAND_SPUD wrote:what about the kind of valve used on SHARP innova ?
I am almost 100% sure it's not a hammer valve
Kinda looks like some sort of exhaust valve dunnit?
btw "ur image not working" for me either...
Posted: Tue Nov 03, 2009 4:30 pm
by maverik94
Ok, Success at last!!!!!! I built the bolt cocking mech and the trigger/sear mech just now. I made the trigger out of some heavy metal and cut it to shape with a cut-off-wheel, I made the bolt with some stell brakeline and some treaded rod and the help of the cut-off-wheel and a drill. It works like a charm. Thanks for all your help. By the way, the image is not working for me anymore either, even though it was earlier. Anyway, thats not important because Ive got this working. The only bad thing is when I was testing the sear, I forgot to block the hammer and it went flying, hit a light shade, denting it()Yeah, I'm using a powerful spring), and then fell somewhere and I can't find it....damn....
Posted: Tue Nov 03, 2009 5:32 pm
by POLAND_SPUD
hmmm
well I found this
apparently, it's just a chamber sealing piston valve with a sear (mechanical actuation)
Posted: Tue Nov 03, 2009 7:12 pm
by maverik94
Ok, It's all good, I made a new hammer seeing as I couldn't find the old one it it works just fine. Thanks for all your help, you were very...ermmmm....helpfull!!!!!!!!!!!!!!!!!!
Posted: Tue Nov 03, 2009 10:37 pm
by jackssmirkingrevenge
POLAND_SPUD wrote:apparently, it's just a chamber sealing piston valve with a sear (mechanical actuation)
Is it just me or were we flicking through the same long Russian thread
Posted: Wed Nov 04, 2009 6:45 am
by inonickname
I'd like to see your solution for the sear. I'm facing a similar problem now, with incorporating a sear (for a hammer valve) into a stock. I'm thinking a steel pin (spring loaded to remain UP) which restrains the hammer, which passes directly through the stock. A lever attached to the trigger can then be used to actuate it.
Lets see it then, good work from what we hear