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11-02-2009, 10:17 AM
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#1
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10 Second Club
Join Date: Feb 2008
Location: Eatontown
Posts: 1,647
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Pumkin Chunkin at Rowan
A group of us got together and built the worlds first pumkin ballista for Rowan's pumkin chunkin competition. The event was well setup with Monster energy drinks there, a live band, free food and t-shirts.
Rowan University Pumkin Chunkin 2009
The ballista was built using 2 leaf springs off of an f-150, and we designed and welded together a frame from mild steel bar stock. The springs were pulled back using a come-along, and fired with a quick release we built, modeled after a pelican hook. We calculated that when pulled back to firing position the springs were at about 1400 lbf.
Im the person in the video who cranks, fires, and shoulder stocks it.
We won first place and $100 to go to the bar!
__________________
1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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11-02-2009, 10:28 AM
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#2
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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awesome!
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1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick 
2014 2LT Cruze 2.0 Turbo Diesel
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11-02-2009, 10:45 AM
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#3
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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hahahaha siiiiick
so, you still have this? 
i like the mxc style at the end 
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11-02-2009, 10:48 AM
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#4
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10 Second Club
Join Date: Feb 2008
Location: Eatontown
Posts: 1,647
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Yes we still have it, its getting disassembled for storage until spring when there is a melon propelling event
__________________
1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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11-02-2009, 11:36 AM
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#5
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12 Second Club
Join Date: Nov 2004
Location: Haddon Twp NJ
Posts: 2,213
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looks pretty sweet...........need to get some stiffer springs
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11-02-2009, 07:06 PM
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#6
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Nice work!
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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11-03-2009, 11:09 PM
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#7
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Banned
Join Date: Dec 2007
Posts: 1,106
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looks sicks, why no make a giant potato cannon for pumpkins???
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11-03-2009, 11:24 PM
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#8
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Join Date: Aug 2004
Location: North Jersey
Posts: 3,047
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That's badass!!!
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Seeya,
Steve R. in North Jersey
'16 Go-Mango Dodge Charger R/T. It's so good to be back in a V8-powered, RWD car!
Former Toy - '88 Monte SS - had lots of mods...
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11-04-2009, 04:52 PM
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#9
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10 Second Club
Join Date: Feb 2008
Location: Eatontown
Posts: 1,647
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Quote:
Originally Posted by Saitin
looks sicks, why no make a giant potato cannon for pumpkins???
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Rules were no compressed air, surgical tuning, or explosives.
__________________
1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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11-06-2009, 10:01 AM
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#10
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Banned
Join Date: Dec 2007
Posts: 1,106
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Quote:
Originally Posted by KirkEvil
Rules were no compressed air, surgical tuning, or explosives.
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well that just about kills all the fun lol
but thats still bad @$$
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11-06-2009, 10:30 AM
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#11
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Join Date: Jan 2007
Posts: 5,623
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i think you'd get more force if you turned the springs the other way....and used a cam on the end like a compound bow...
__________________
2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10 
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