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In 2000 we decided to take a two prong attack to our siege craft. We simultaneously started building both a gigantic Ballista, and a centripetal human powered machine.

Mista Ballista was our long term plan and the centripetal machine was used in the 2000 Punkin Chunk and made more appearances in 2001, 2004, and 2005.

For more on engineering a centripetal catapult, see the Centripetal engineering page.


Construction during 2000

In 2000 we built and tested the machine. Our drive system and trigger were a bit flakey, but we threw almost 100 feet. Huzzah!


Enhancements for 2001


In 2001 we enhanced the machine with a new throwing pouch and trigger. We also added a cool new bike platform.


Enhancements for 2004


In 2004 we made enhancements that allowed simplified things to great effect at the 2004 Punkin Chunk.
Additional Pages for Pumpkin Putter
Pumpkin Putter In 2000 we decided to take a two prong attack to our siege craft. We simultaneously started building both a gigantic Ballista, and a centripetal human powered machine.
Pumpkin Putter: Construction In 2000 we decided to take a two prong attack to our siege craft. We simultaneously started building both the gigantic Mista Ballista, and a centripetal human powered machine. The centripetal machine was used in the 2000 punkin chunk and the ballista will be our long term machine.
Pumpkin Putter : 2001 Enhancements We built the Pumpkin Putter in 2000. After critical failure during last years 2000 punkin chunk we decided that the putter needed an upgrade for the 2001 punkin chunk. This page describes our upgrade path. Our longer term goal is to build Mista Ballista, using the putter as an interim machine.
Pumpkin Putter : 2004 Enhancements In 2004, Team Tormentum got a call from Don Young of the "Junkyard Spinner" team with an interest in creating a "Human Powered Centripetal" division. Junkyard spinner was lonely since we had retired the 'putter in preference to Mista Ballista. There was a plan for a second spinning machine. All they needed was one more to make a new division at the World Championship Punkin Chunk. (Notice the picture on the lower right on the front page of that web site.)


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Last Modified: 05/10/09