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Posted: Thu May 01, 2008 8:01 pm
by D_Hall
markfh11q wrote:Man, you've been looking forward to this a long time D_Halls, I can tell. Is this what got you interested in combustion guns?
Yes, the Pipe Dream is why I'm working in the combustion world these days. I need the hot gases to break Mach. Were it not for that requirement, I'd just make it a Very Large Air Gun.

Posted: Thu May 01, 2008 8:22 pm
by D_Hall
And pipes. We have pipes!

Posted: Thu May 01, 2008 8:28 pm
by SpudFarm
those pipes does not look suitable for a hybrid.. what is the wall thickness?

Posted: Thu May 01, 2008 8:49 pm
by D_Hall
IIRC, it's 1/2" wall. Correct in that it's not much, but then, I'm not planning on putting much through it. It's good to 200 psi with a 5:1 margin. Totally adequate for a 2X gun.

Posted: Thu May 01, 2008 8:51 pm
by SpudFarm
just don't "ride" it as Adam did with the chicken gun :D

Posted: Thu May 01, 2008 8:52 pm
by starman
D_Hall wrote:
markfh11q wrote:Man, you've been looking forward to this a long time D_Halls, I can tell. Is this what got you interested in combustion guns?
Yes, the Pipe Dream is why I'm working in the combustion world these days. I need the hot gases to break Mach. Were it not for that requirement, I'd just make it a Very Large Air Gun.
Are you finding combustions interesting enough to become a permanent convert? I know (or think anyway) your first love is with pneumatics.

Posted: Thu May 01, 2008 8:57 pm
by MrCrowley
@D_Hall

By the looks you have a vast open space to shoot this thing, that means you have a vast open space between you and the cannon...I think you can go more then a 2x :D

Posted: Thu May 01, 2008 9:00 pm
by SpudFarm
mrcrowely: mabe it can get DDT

Posted: Thu May 01, 2008 9:03 pm
by MrCrowley
You'd probably need 100' of chamber that size to get DDT :P

Posted: Thu May 01, 2008 9:06 pm
by SpudFarm
BTW how long is the chambers?

Posted: Thu May 01, 2008 10:18 pm
by D_Hall
MrCrowley wrote:By the looks you have a vast open space to shoot this thing,
I have access to a military gun gun range (and I'm not talking about small arms). Ironically, said range is about 1/2 mile beyond the horizon in the "pipes" picture. So yeah, I have vast open spaces available to me.
I think you can go more then a 2x :D
LOL. Yeah, but if the gun WORKS, then I'm a dead man if I push it too far. Too, IF the gun works, it may be a lot easier to get funding for something "nicer" if a need is identified. :)

Posted: Thu May 01, 2008 10:22 pm
by D_Hall
spudfarm wrote:BTW how long is the chambers?
10' long. Total volume is on the order of 170 ft^3.

Posted: Thu May 01, 2008 11:06 pm
by OuchProgramme
I think you should build a house, and then shoot the 250 pound projectile at it :).


Ultimate damage pic.
I'd pay big money to see it

Posted: Thu May 01, 2008 11:14 pm
by bigbob12345
Mind if you take a pic of the pipe with some other thing for a comparison of size.

Posted: Thu May 01, 2008 11:15 pm
by THUNDERLORD
@D_Hall just wondered what type of place you work for? If that's too much information, just don't answer. I am expecting a little $$$$ soon myself and would like to maybe start a company(in the air rifle/ spud cannon business).