Overkill

"Overkill" is a ice ball launching catapult. It can shoot 3 lb objects over a quarter of a mile, giving it its name. It was a scale model of the larger torsion catapult "Roman Revenge", which competed in the World Championship Punkin Chunkin and got 2nd place with a shot of 2017 feet.
You may need to turn up the volume, the song Oh Fortuna has a very soft part in the middle.
Enjoy!
-piman

Category:

Entertainment

Tags:

• Catapult
• Punkin
• Chunkin
• Roman
• Revenge
• Overkill
• mangonel
• onager
• torsion
• Oh
• fortuna

[murgatah]

What kind of rope would you suggest using for a torsion powered catapult?

[piman2017]

We use solid braid polyester, but some people have had better luck with twisted.

Chucky II launched a pumpkin 3070 feet with twisted polyester. It seems to work for them.

-piman

[yzf450motoxrider]

i am attempting to build a torsion catapult . The part i cant figure out is how to tension the rope on a large catapult i know some people use hydraulics. however is there another way to do it. Also could you explain the steel pipe that houses the rope. Is it some type of home made bearing system?

thanks

[rawheas]

ive heard alot of websites suggest nylon, because its the most elasticity (though its expensive for a first try)

i mean at the pumpkin chunk im pretty sure all the teams use it.