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Hatra Ballista Jr
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After building and testing Baby Hatra Ballista, it was clear this design was worth pursuing. Eric decided we needed a mid-sized model which we could then enter into the World Championship Punkin Chunk in the 10 and under category. The Hatra Ballista is described briefly in Greek and Roman Artillery 399 BC-AD 363.
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Contact: Team Tormentum Copyright © 2000-2022 Eric M. Ludlam All rights reserved. Twas' brillig, and the slithy toves did gyre and gimble in the wabe... | Last Modified: 05/10/09 |
A Hatra Ballista Spring frame is a bit different from a Straight or V spring ballista.
There wasn't much to go on with historical references for the Hatra Ballista, just a meta spring frame
covering, and an artist's rendition in the book 
The load bearing parts for Hatra Ballista Jr are very similar to what I made for
Onager Jr, though I've made several changes to help assist in the operation
and use of the machine.
A hatra ballista has inward swinging arms that allows for 90 degree's of rotation during the throw. Our model has 3 foot long
arms. For our first year, these arms were made particularly strong.
Hatra Jr is easy to deploy. That's one of the reasons it took so much extra time to build the thing.
Various pictures and stories of launching Hatra Ballista Jr.