Any Punkin Chunkers out there?

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I've been watching the annual Discovery Channel Punkin Chunkin specials on netflix recently, and it's been giving me the itch to try it out.  I've built air cannons of every sort to launch all sorts of stuff.  Nothing that big before though.Anybody around here who has previously or is planning to compete this year?
Reply:I'm more the Trebuchet type myself, that being said I have yet to chunk my first punk, but it'll happen. Still in the design stage of my trebuchet so it's still all small scale.There are no problems. There are only solutions. It's your duty to determine the right one.Hobart Handler 210Airco 225 Amp MSM Stinger
Reply:Trebuchets are definitely cool.  I'm definitely an air cannon/centrifugal guy though.I've got a design in mind that would in theory give far better performance from a shorter barrel and smaller tank than many of the huge 2000+ gallon tanks with 100 foot barrels.  It's all about the valving.
Reply:i threw  a punkin out of an suv going 75 once does that count?Vantage 500's LN-25's, VI-400's, cobramatics, Miller migs, synch 350 LX, Powcon inverters, XMT's, 250 Ton Acurrpress 12' brake, 1/4" 10' Atlantic shear,Koikie plasma table W/ esab plasmas. marvel & hyd-mech saws, pirrana & metal muncher punches.
Reply:Originally Posted by Dualiei threw  a punkin out of an suv going 75 once does that count?
Reply:Now that i would love to see!    we also threw one of of a 150 condor man lift just to see what it would do.Vantage 500's LN-25's, VI-400's, cobramatics, Miller migs, synch 350 LX, Powcon inverters, XMT's, 250 Ton Acurrpress 12' brake, 1/4" 10' Atlantic shear,Koikie plasma table W/ esab plasmas. marvel & hyd-mech saws, pirrana & metal muncher punches.
Reply:Originally Posted by anickodeTrebuchets are definitely cool.  I'm definitely an air cannon/centrifugal guy though.I've got a design in mind that would in theory give far better performance from a shorter barrel and smaller tank than many of the huge 2000+ gallon tanks with 100 foot barrels.  It's all about the valving.
Reply:Originally Posted by socoj2Only so much. Unless you wanted to do Helium.Air has a fixed Expansion rate so even if you have a 100% efficient Valve with the same orrafice as your pipe you are still limited by the barrel size.