SpudFiles

Not meaning to kick this up again, but any progress? This is incredibly useful and teaching for me... I was in the process of redoing my burst disk hybrid, but may have to go for piston instead now thanks to you.

I'm going to have to ask for some help in regards to a piston. I cannot get ABS around me, and my machining capabilities are extremely limited. I could turn a wood one, but I doubt that would hold up to the pressures necessary, and I don't want to use PVC. way too brittle.

Any advice would be superb. I leave for college next week and am planning an all-day build session to get this thing built and working Sunday.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

Holy crap!! That just looks wicked. Love it. Any advice on a piston for me?

Lol love the pic for JSR 8)
Those pictures were actually very nice, don't know what you're talking about!
The gun looks really good! Probably in the top three hybrids on the site!

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

Awesome thanks! THe threaded rod option was what I was considering, glad to see its working. Yea I'll be able to post-- I leave on the 14th. Hope to get some fiddly work done tomorrow/friday like leak testing the chamber and such so Sunday I can focus on the valve and getting that to seal and work properly as that will most likely be a b!tch. I'll start a thread tomorrow.

Thanks SB15

Damn, that thing is awesome.


That is all.

Planning on a valve in 1.25" pipe, smaller than yours. Also plan on a simpler pilot air injection for now, similar to what you had at first just to keep it simple to build in a limited time.

Hijack over, sweet cannon! Thanks once again for all the advice.

*sigh*

At least you're not barefoot and there's no underwear on the floor

SB15 why didn't you use stop nuts where those o-ring washers are?

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

Ohh, I don't see the Jb in the pic. :tongue3:

That's cuz SB15 seems to make a point of damn good craftsmanship.. just look at his threads. Almost no excess teflon is exposed.

Have to say it again, this gun is so damn nice..
But it do look overly complex, why don't you have a external propane meter?
The fittings and such looks good but I like to keep things simple to avoid confusion while fueling.

Also, that piston looks EXACTLY like the one I am going to use in my hybrid. Nice to get a confirmation that it will work

I'm a big fan of onboard meters, and I think it looks bloody awesome. But thats just my opinion.