Sterry 0 Posted May 10, 2009 Report Share Posted May 10, 2009 wasnt entirely sure whether this should go in the air rifle section but here it goes. I got asked by science teacher to make a air powered rocket launcher for the y9 thing. so after 2 bottles of cider, copper pipe and an awful lot or plastic metal. (the cider payed 2 parts somethimg to keep us entertain and the bottles for the air reservouirs) we made this rocket thing. We decided to pressure test it, by pumping it up slowlyt and using soapy water to find leaks (the only lil one we found was the release valve. fix with new "O" ring) we decided only to got to 100 psi. we did this a few times and all was a okay. Then the cider rreared its ugly head, test firing. Start off with a cork in the barrel which went like stink. then a platic tube sealed at one end slipped around the barrel went an awful long way too. lastly a paintball. WOW. god knows how fast it was goin. Quote Link to post Share on other sites
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