Barrel to Chamber Ratio?

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
User avatar
daberno123
Corporal
Corporal
Posts: 594
Joined: Mon Nov 19, 2007 5:56 pm
Location: Ohio

Sun Feb 10, 2008 12:07 pm

Sorry i meant volume :oops:
User avatar
DYI
First Sergeant 5
First Sergeant 5
Antigua & Barbuda
Posts: 2862
Joined: Sat Jul 07, 2007 8:18 pm
Location: Here and there

Sun Feb 10, 2008 12:24 pm

My calculation used 1.61" ID for 1-1/2" pipe, and 4.026" ID for 4" pipe, which is what they should be.

If you are within the minimum age for this forum (13), then you should know the formula, unless you've failed one or two grades.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
User avatar
SpudChucker24
Private 2
Private 2
Posts: 23
Joined: Sat Feb 09, 2008 4:54 pm

Sun Feb 10, 2008 12:47 pm

So this is a decent ratio then? Is it bad enough where i would have to change something?
User avatar
bigbob12345
Staff Sergeant
Staff Sergeant
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington

Sun Feb 10, 2008 12:59 pm

The ratio isnt perfect but its not that bad you shouldnt need to change anything.
User avatar
SpudChucker24
Private 2
Private 2
Posts: 23
Joined: Sat Feb 09, 2008 4:54 pm

Sun Feb 10, 2008 3:09 pm

Ok thanks for all the help guys. I think im going to make a civil war cannon like miskaman did. That thing looks sweet!
Post Reply