"The Omega Project" help needed

[mark.f]

The rubber coupling, I'm guessing, is to form a better seal against the sealing face on the piston. Although a normal SCH-40 PVC coupling half can be used as well to get similar results.

Unless I'm wrong?

[PVC Arsenal 17]

Well I priced the whole deal out... It'll cost around $150!! I'm gonna be piss broke!

[schmanman]

you think that's bad? try $450-500 bucks, and counting!! (Tomorrow I need to spend even more, working on a breech)

[PVC Arsenal 17]

may I ask what the hell you're building?

[PVC Arsenal 17]

EDIT* SCROLL vvvv

[schmanman]

The rubber coupling, I'm guessing, is to form a better seal against the sealing face on the piston. Although a normal SCH-40 PVC coupling half can be used as well to get similar results.

Unless I'm wrong?

there is no rubber sealing face on the piston. the face of the piston is pvc. the rubber is on the barrel, not the piston.

[PVC Arsenal 17]

Yeah we got that

New question:

Now I'm torn between sealing with an actual pipe through the tee or sealing with a bushing like rmich?

what yeilds more power? And will two caps back to back hinder the power as opposed to only one cap?

[schmanman]

the two caps back to back will lengthen the valve. go with one. just put a bushing in, with a pipe through that. (did I not understand your question?)

[PVC Arsenal 17]

OK we worked it out.. I misunderstood his design. Thanks