You cannot see the blueprints for this weapon in the directions in the first message. Do you have them, Jack, so you can see them? Or else, do you know where they are on the web?

jackssmirkingrevenge wrote: ↑

Tue May 04, 2021 8:03 am

pdf here: https://archive.org/details/Caselman_Ai ... 9/mode/2up

another version: https://ia800207.us.archive.org/18/item ... prints.pdf

Cool! Thank you.

I already understand it. "K" is for multiplying by 1,000.
In this specific case, 1.8K means 1.8 psi x 1000, it is 1800 psi, about 124 bar. Thanks for your answer.

jackssmirkingrevenge wrote: ↑

Fri May 07, 2021 10:14 am

Voila with a 1 meter barrel:



50cm barrel gives 319 m/s and 43J, 66cm gives 356 m/s and 53J

wow is supersonic!!

Just that. My analogy is with a subsonic turbojet nozzle, which ejects the gas with a lot of pressure in the outlet area of the nozzle, it does not have as much speed or performance as a nozzle that causes the pressure to drop to values close to atmospheric pressure. In the first case, the velocity ...

wow is supersonic!! :o I imagine some of your creations also exceed the speed of sound ;) even though your projects focus mostly on function and not maximum performance. It is possible although I don't really know. I have shot 6mm bb of 0.23gr plastic, with my hybrid gun at 7X, and I think it is mo...

How about 85,000psi

Apparently it was a "hot" loaded round, he was very lucky that one of those lugs didn't kill him. That's what he thought, but there was a bit more going on. The sabot material was building up in the barrel, and the signs where there, he did say the shots were going off target and the recoil felt di...

https://media-exp1.licdn.com/dms/image/C4D22AQE-OLrsX-uJUA/feedshare-shrink_800/0/1620891745542?e=1623888000&v=beta&t=Kbml65sjTyKUzWdow98xZH9aqoBRdawD3QQfYGoqHS8 "22 metre £1.1 million hyper-velocity gas gun. 100 g projectile, which can reach a maximum velocity of 6.5 km/s using 3 kg of gunpowder. ...

I agree with your analysis. This way you won't have the problem, but an o'ring is necessary.

Untitled.png So I built a fairly well made counter balanced valve. Exhaust 7mm diameter with 9mm piston. Then I compared it to a conventional hammer valve with 6mm exhaust diameter and a shaft of 4mm. Turns out the balanced valve was weaker. My hypothesis is once the valve is cracked open, the pres...

Now I am hooked.. Yesterday I found two Italian WW2 paratrooper helmets on a slope of a local mountain. This region where I live was under Italian military occupation from 1941 until Italy capitulated in 1943. Judging by the shape, I am pretty sure they were manufactured for paratroopers. My grandfa...

sorry for reviving an old thread but maybe there is some kind of update on the current status of this project No problem! I don't check this forum often enough, sorry :-P Here's a follow-up where I did some side-by-side testing with other designs. We tried being somewhat scientific so the last half...

This is one of the few examples I remember of a publicly available paper from Utron's contracted government research project for a "Combustion Light Gas Gun" (CLGG) - A.K.A. a badass hybrid that many strived here to get close to. Full paper here: https://apps.dtic.mil/sti/pdfs/ADA462130.pdf There i...

There's no picture. I think you're talking about this cannon.