SpudFiles

the sealing face..... the thing that gets hit.

The sealing face was a piece of innertube from a tire that had been cut into a small circle and then hole punched in the middle.

and i take it the solid part of the valve was a screw?

some internal pics would be very nice.........

I'm sorry, I don't understand what you mean.
Here is a picture I drew for spudfarm, it's easier than you think.

thank you that answers my question..........

i guess we had different names for it.

I guess so yeah.

I'm exploring the possibilities of full auto with a hammer valve now.
My next one will bother be smaller and made with use of a lathe.

Sear to hold back the hammer, a pneumatic ram powered form the barel side to recock it..that should work

Im sorry for this question BUT, How does a hammer valve work? I see there is a piston that seals the barrel and you push a button and the valve opens. It this stem on the valve hard to push? Or is is called hammer valve for a reason?

This type of valve is an interesting prospect...

Brian the brain wrote:Sear to hold back the hammer, a pneumatic ram powered form the barel side to recock it..that should work

I'll look into it

Im sorry for this question BUT, How does a hammer valve work? I see there is a piston that seals the barrel and you push a button and the valve opens. It this stem on the valve hard to push? Or is is called hammer valve for a reason?

Basically, when the stem (the blue rod in the diagram) is pushed, it pushes back the ball bearing which seals onto a rubber sealing face and a small amount of air is allowe through.
How hard the stem is to push depends on how much pressure you use and the strength of the spring. You don't particularly need a strong spring, just one that will reseat it after it opens.
It's called a hammer valve just because a spring loaded 'hammer' hits the stem and opens the valve momentarily.

but why not use a tube with a big gap and a closed end?
good work btw

I'm not sure I understand what you mean, picture maybe?

Ahhhhhh Kewl I will look into these. When you have finished your no lathe one please post pics