C:B ratio
-
super spuder
- Corporal
- Posts: 558
- Joined: Fri Apr 06, 2007 9:05 pm
- Location: Ontario Canada
i am about half way done a small marble gun. it has an extremely small fire extingisher for the chamber (i have not figured the volume yet) and i am going to go and get the barrel tomorrow i think, but i was wondering what is a good C:B ratio on a small marble cannon would be. i was thinking about 1:1 but i am not sure.
-
ShowNoMercy
- Sergeant
- Posts: 1094
- Joined: Mon Mar 19, 2007 8:08 am
- Location: Jersey Bitches!
How can you be a Master Sergeant and not know of the gas gun design program? Just plug in your wanted muzzle velocity and then build you barrel off of that information.
Jesus saves, no need to pray
The gates of pearl have turned to gold
It seems you've lost your way
The gates of pearl have turned to gold
It seems you've lost your way
-
super spuder
- Corporal
- Posts: 558
- Joined: Fri Apr 06, 2007 9:05 pm
- Location: Ontario Canada
well sorry. but i have never built a marble fun before. and where do you find this gass gun design thing
-
iPaintball
- Corporal 2
- Posts: 695
- Joined: Sun Mar 04, 2007 8:37 pm
I wish I could use the ggdt. I have a iMac now, so I can't download it! 
on a pneumatic (if you have around 130 psi) you can easily get away with a 1:4 C:B. the only problem with that is that it would always have to be fired at a high pressure. which isnt a problem if you always have a compressor, but if you only have a bike pump then you would need more like a 1:2 ratio.
"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote
you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
-
super spuder
- Corporal
- Posts: 558
- Joined: Fri Apr 06, 2007 9:05 pm
- Location: Ontario Canada
ok thanks. i think i might go for about a 1:2.5 ratio