mapp problem

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
jjjd
Specialist
Specialist
Posts: 117
Joined: Wed Nov 29, 2006 12:39 pm

Wed Jan 24, 2007 10:37 pm

I have used metered propane for a while now and it has worked great, i now have a canister of mapp and every time i go to inject it whatever im shooting comes flying out of the barrel just as i open the ball valve, any help?
garrettee
Specialist
Specialist
Posts: 173
Joined: Sat Dec 23, 2006 12:18 am
Location: Louisville,Ky

Wed Jan 24, 2007 11:14 pm

I know nothing about mapp gas but it sounds like too much pressure to me.
" It's ok for a man to commit adultry if his wife is ugly" Howard Stern
Killjoy
Sergeant
Sergeant
Posts: 1052
Joined: Sun Nov 12, 2006 12:51 am
Location: New Mexico

Thu Jan 25, 2007 12:13 am

i had that problem when i used propane. the rapid relase of propane (in your case mapp) was able to prel the projectile out of the barrel. because i don't know what you cannon is like, the best advice i can give you is to open the ball valve extremly slowly or go get a flow regulator for air tools from a hardware store.
User avatar
jjjd
Specialist
Specialist
Posts: 117
Joined: Wed Nov 29, 2006 12:39 pm

Thu Jan 25, 2007 8:38 am

Yeah i will try that, i was thinking mabey my regulator was reading it wrong its from home depot
Post Reply