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Tell stories about your spud cannon adventures!

Postby audia4driver » Mon Dec 15, 2003 12:59 am

Ok i was totally stoked no one parked there car on the street not that i dont care about hitting bmw's:twisted: but the conditions were perfect so i pumped my pneumatic cannon up to 97 psi ran out side booom. I wasnt very satisfied it flew about 200 ft. 200ft is great but doesnt compare to 300 yrds.GO big or go home. Iam using a 4 foot (1 inch barrel) to a 3 1/2 foot (1 1/4 inch chamber) launching potatos well custom cut potatos to fit the barrel
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Postby FoxxLord » Mon Dec 15, 2003 11:00 am

Get a bigger chamber, 1.25" is always going to be pretty wimpy because of the low air volume. Especially since your barrel is almost the same diameter. Go to a 2" or even a 3" diameter chamber.

-Foxx
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Postby audia4driver » Mon Dec 15, 2003 2:10 pm

alright thanx
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Postby clide » Mon Dec 15, 2003 5:25 pm

what kind of valve are you using?
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Postby Robbie » Mon Dec 15, 2003 7:29 pm

You will probably never (unless you’re using insane pressure or temperatures) be able to get 300 yds with that gun. The reason being is that 1 1/4" pipe is a very bad choice for a chamber. Fat and short chambers are ideal and yours is exactly the opposite.
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Postby audia4driver » Mon Dec 15, 2003 7:53 pm

iam using an inch ball valve but i have decided that this gun is for short range and iam moving on to a tennis ball cannon
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Postby spud lover » Mon Dec 15, 2003 8:06 pm

That is half of your problem, do yourself a favor and get a sprinkler valve. I promise it will double the performance of even the crappiest launcher.
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