Treatises Engines Of War Engineering Battles Spare Parts Plunder
Hatra Ballista Jr
Search

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.


Punkin Chunk 2007:




Oct 23, 2007:




Aug 20, 2007:




Sept 17, 2006:




Additional Pages for Hatra Jr
Hatra Ballista Jr
(This Page)
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.
Hatra Ballista Jr: Spring Frame A Hatra Ballista Spring frame is a bit different from a Straight or V spring ballista.
Hatra Ballista Jr: Scapus Frame There wasn't much to go on with historical references for the Hatra Ballista, just a meta spring frame covering, and an artist's rendition in the book Greek and Roman Artillery 399 BC-AD 363. As such, I opted to go with a mix of what we did with Mista Ballista in metal, or Baby Hatra Ballista.
Hatra Ballista Jr: Torsion 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.
Hatra Ballista Jr: Arms and Bowline 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 Ballista Jr: Deployment Hatra Jr is easy to deploy. That's one of the reasons it took so much extra time to build the thing.
Hatra Ballista Jr: Shooting Various pictures and stories of launching Hatra Ballista Jr.


Buy a Ballista
Machine
Buy The Plans
Torsion Plans
 
 
Home
 
Hatra Jr
Spring Frame
Scapus Frame
Torsion
Arms and Bowline
Deployment
Shooting
 
Treatises
About
Philosophy
Team
Logs
In The News
FAQ
Sponsors
Web Site
Contact Us
Copyright
 
Engines Of War
Micro Treb
Baby Trebuchet
Treb Jr
Juggernaut
Juggernaut 2
Pumpkin Putter
Baby Ballista
Ballista Jr
Mista Ballista
Baby Hatra Ballista
Hatra Jr
Baby Onager
Onager Jr
Baby ASOK
Cardan Treb
Scissor Treb
Kid-A-Pult
Vacuum Bazooka
 
Engineering
Frames
Slings
Triggers
Torsion
Winches
Centripetal
Advice
 
Battles
Zukapult 2008
Punkin Chunk 2007
Flying Chunk 2007
Punkin Chunk 2006
Zukapult 2006
History Chunk 2006
Punkin Chunk 2005
Zukapult 2005
Punkin Chunk 2004
Punkin Chunk 2003
Bennington HS 2002
Punkin Chunk 2002
Mohonk 2002
Mt. Snow 2002
Bennington HS 2001
Punkin Chunk 2001
Busti Hurl 2001
History Chunk 2001
Punkin Chunk 2000
Punkin Chunk 1999
Punkin Chunk 1998
 
Spare Parts
Random Picture
All Videos
Art
Seuss Trebuchet
Seuss Onager
Night Before Chunk
Pillsbury Cartoons
Cartoons
Dave Gets Married
Roger Gets Married
Geek Calculator
Browser Hurling
Search
 
Plunder
Catapult Kits
Catapult Plans
Books
 
Contact: Team Tormentum
Copyright © 2000-THISYEAR Eric M. Ludlam All rights reserved.
Twas' brillig, and the slithy toves did gyre and gimble in the wabe...
Last Modified: 05/06/08