SpudFiles

Edit... This is Trinity's latest incarnation. Scroll down to see more photos.
Thank you SpudFiles!

I've been lurking in your forms for many months now, but I finally just joined so I could thank everyone here.

Go easy this is my second cannon. It's fully functional but only about 90 percent complete. Sorry about the Crummy smart phone photos and primer stains, but a little spray paint can fix that.

"Trinity" Named for its three valves.
The basics...
Valves: Three 1" Orbit Sprinkler valves ( Pneumatically triggered by 4th sprinkler valve)
Pilot: 3/4" Orbit Sprinkler valve ( Pneumatically Triggered )
Chamber: 36" pf 3" sch 40
Total air volume: 335 cubic inches
Barrel: 60" of 1.5"(1.73" id ) sdr 26 sleeved with 60" of 2" sch 80 and a 24" by 3" sch 40.
C/B: 2.37/1 with the sdr and 1.9/1 with 3" sch 40
Range: 1000+ feet with golf balls.

After starting with a compact single sprinkler valve launcher this thing is a monster. Thanks again SpudFiles And everyone here for the knowledge to build my first two cannons.

Hooked...Boomer

Edit...
A little info about the pilot valve. When I first started testing I was using a brass cross fitting and a blow gun to pilot all three valve. Well this worked it wasn't ideal. There was a slight delay( 1/10 of a sec maybe? ) before the valves opened. After changing to the sprinkler valve pilot the trigger responds instantly and with authority.

Boomer58cal wrote:Three 1" Orbit Sprinkler valves ( Pneumatically triggered by 4th sprinkler valve)

Sprinklerception

My first pneumatic cannon of any relevance was similar to this - 2 1" orbits, but electronically piloted.

Needless to say - once you go piston, you wonder why you ever messed with those $20 valves...

Welcome to spudfiles!

I was going for unique! I have not seen a triple valve like this and most duel valve cannons I've seen were not man portable. I already have my first combustion and piston valve cannons in the works.

Oh... And I paid $5.99 each ( on sale @ lowes) for the sprinkler valves. I couldn't say know

I'm am still working on a barrel brace and a shoulder strap.

Here's a little better photo of the valves...

Boomer58cal wrote:Here's a little better photo of the valves...

Some photos or videos of stuff you've perforated are always appreciated pretty is as pretty does!

I'm working on the paint job and a barrel suport right now. Next time I get a chance to shoot I will try to post an undate with a vid.

I will have my first combustion up soon also. I just need to mount the propane meter and bottle. I have the paint and everything else done, but haven't had time to put it together. Hopefully this weeked.

To many projects... so little time.

To many projects... so little time.

Signs of a true spudder! :bigsmurf:

I finally got around to painting Trinity. It's just that flat forest green "camo" paint, but I like it. I was going to full camo it, but once I sprayed the green on I decided To leave it. It looks almost parkerized like a surplus military rifle. I think it looks like it means business. 8) Now I just need to finish the barrel brace so I can take it to the ranch this weekend.

Well what do you think?

Edit... I finally got the new pilot valves done. Photos at the bottom.

Wanna talk about loud! Have you ever heard four 3/4" and three 1" valves go off at once?

The biggest problem is you can't even see the golf balls now, at best you might get a little flicker of sunlight off them 3-400 feet out.
I'm getting about 150 yards with a 3" oversized Chuckit! Tennis balls ( they don't have the best drag coefficient do they )@90 psi. Hopefully I'll get a chance to push it up to 120 psi today with my big compressor, yesterday I was running off my small one.

Well I've had a hard time finding the golf balls when fired at max pressure (120 psi) and yesterday I found out why. They're going about 200 feet into my neighbors field, which is about 1400-1450 ft. I can't say enough about how impressed I am with the power of these pneumatic animals