MAPP injected combustion V2.0

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.
Post Reply
User avatar
frankrede
Sergeant Major 2
Sergeant Major 2
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Has thanked: 1 time
Been thanked: 1 time

Thu Apr 19, 2007 9:52 pm

Dammit, Now I really want to build an advanced combustion:(
But all my money is going towards a back pack super soaker:(
Current project: Afghanistan deployment
Top
User avatar
bboymatty
Specialist
Specialist
Posts: 108
Joined: Sun Feb 19, 2006 12:12 pm

Mon Apr 23, 2007 7:39 am

nice! it looks like the one i saw a little while ago called the nuker. it has a clear combustion chamber. unless all combustions are like this??
Top
User avatar
Specialist
Specialist 3
Specialist 3
Posts: 375
Joined: Sun Mar 18, 2007 4:22 pm
Location: Illinios
Contact:
Contact Specialist

Mon Apr 23, 2007 8:44 am

nice gun. it reminds me of this bad boy http://www.launchpotatoes.com/index.php ... roductId=3
Top
User avatar
Los Frijoles
Private 2
Private 2
Posts: 38
Joined: Mon Dec 12, 2005 7:22 pm

Fri Apr 27, 2007 4:10 pm

And I though MAPP gas was suicide...

Nice job on that cannon!
Top
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:
Contact schmanman

Fri Apr 27, 2007 4:25 pm

wow, you've outdone yourself!

you make few guns, but they're all engineered to the max.

quality, not quantity. :D
Persistence is a measure of faith in yourself
Top
User avatar
bigbob12345
Staff Sergeant
Staff Sergeant
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington

Sat Dec 01, 2007 11:53 am

Nice gun What kind of power does it get
Top
User avatar
mtronic
Specialist 2
Specialist 2
Posts: 291
Joined: Sat Jun 23, 2007 6:21 am
Location: everywhere at once

Sun Dec 02, 2007 5:57 am

wow, I liked the original but I like this one more now. Do you get a big increase in range with the MAPP?

This is how combs. should be done, good work mate.
Always out numbered....
never out gunned
Top
User avatar
octane89
Specialist 2
Specialist 2
Posts: 257
Joined: Tue Sep 11, 2007 1:20 pm

Mon Dec 03, 2007 11:21 am

mtronic: You get 25% more muzzle velocity with map and overall about 11% more velocity. But instead of a 4.2% mix like propane, it's 4.6 and instaed of 90psi (tank pressure) it has 94.

By far my favorite combustion so far...
Top
Novacastrian
Staff Sergeant 2
Staff Sergeant 2
Posts: 1603
Joined: Sat Aug 11, 2007 6:59 pm
Been thanked: 1 time

Tue Dec 04, 2007 12:24 am

SpudBlaster15 wrote:It is a clean out cap.

I will now reveal the secret. I cut a hole in the center, then slid a 2" male threaded adapter through the back, and threaded the ball valve onto the protruding threads. I sealed the inside with some silicone sealant. It works great.

Once again, thanks for all of the positive replies.
Damn you spudblaster, i guessed the way you did- then you told everyone :lol: Exactly how i make some of my attachments and the method used is strong as, nice cannon.
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
Top
Post Reply

Return to “Combustion Cannons”