PPC-90 General Purpose Cannon

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.
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Jumpin Jehosaphat
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Thu Jul 05, 2007 5:34 pm

Brush fans aren't as dangerous as people seem to think. Just take extra care while the fan is on, especially when you first turn it on, and it should be fine. Just don't mess around or point it anywhere that would be dangerous while the fan is mixing.
utz
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Thu Jul 05, 2007 5:55 pm

Thats a really neat paint application!! Thats is giving me some ideas for my next gun. Good work!
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Billy Bob
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Sun Jul 08, 2007 4:54 am

I have the same opinion like Jumping Jehosapat



And 99,9 % you need a big free overjumping spark at propan/air.
At my ignition i had sparks which creep and doenst jump free. 90% Nothing happened and possible sparks at the brushs are much smaller.

That shoulnd say that its impossible but nobody holds the gun on people :wink:


Nice Gun :)
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mark.f
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Mon Jul 09, 2007 9:32 am

Nice cannon! Now I see why you were asking me for a cannon barrel that went down to 3" threads, but I only have one, which is way to big for that lil' chamber, (2-1/2" x 60").
pnematicrookie
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Wed Feb 13, 2008 10:37 am

im surprised they let you, take the barrel on the plane! you know how airport sercurity is these days lol :x
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rp181
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Wed Feb 13, 2008 10:41 am

i dont think spaks a problem aslong as you dont use a high current motor (like a drill) =)
OuchProgramme
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Wed Feb 13, 2008 11:45 pm

Funny name to it..

"General Purpose"

Gee, i wonder. Would could general mean? :D

*Sarcasm*
popomon
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Tue Aug 26, 2008 7:52 pm

onequestion, i have seen many spud guns on this sight and noticed the fan in the gun is un protected and also in the same part of the combustion chamber, wouldnt the fan get damaged over time?
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psycix
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Wed Sep 03, 2008 8:52 am

popomon, If you read the spudwiki, your question will be answered.
I wrote the page for chamber fans, and the answer you seek is included.
Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
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LCTChamp
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Wed Sep 03, 2008 8:13 pm

do you have to have a regulator to make a propane meter? Your cannon is clean and has and awesome paint job. i love it.
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