Siege Engine.com: Advice for Prospective Siege Engineers

Treatises Engines Of War Engineering Battles Spare Parts Plunder
Advice for Prospective Siege Engineers
Share this page
Search

Ancient Advice:
Take Pictures of your machine.
Despite having a nifty engineering section on this web site, I still get lots of email asking for advice. This is a repository of all interesting bits of wisdom our team has gleaned over the years that doesn't fit anywhere else.


Traction Trebuchet Advice
Juggernaut flinging with the History Channel

  • Your counterweight needs training. They know it's dangerous, and it makes them feel better.
  • Devise and use a `keeper line' for your sling. This keeps your counterweight from being whacked in the head.
  • Make sure draw-lines are affixed to the arm securely. If they fall off, the arm will konk someone on the head.
  • Advise your counterweight to not bend their arms. Use gravity instead. (It's more efficient and stronger.)
  • Make sure everyone on the counter weight team knows how to count to three.


Trebuchet Advice
Juggernaut 2

  • Counterweight should be created in manageable chunks. 400lb blocks seem cool, but are instead lame.
  • Never stand under the counterweight.
  • Never put body parts where the throwing arm wants to go.
  • Take advantage of all mechanical advantage available to modern hobbyists.
  • If nothing breaks, you don't have enough counterweight.


Torsion Advice
Roger and the Stubborn Trigger

This advise is for any torsion machine with three inches or more of rope.

  • Never use a wooden Epizygis.
  • Never use a mild steel bolt for an epizygis.
  • Never use a wooden modiolus.
  • Your first machine should use the cheapest rope you can get. It will be trashed.
  • Consider buying a trigger. Crafting your own results in many repairs.
  • Never Ever put a body part in someplace the arm may like to be some day.
  • Bring a spare spanner (torsion tightening beam)
  • Bring a spare throwing pouch.


Centripital Advice
Human Powered Centripital

Centripetal machines are surprisingly complex.

  • Make your throwing pouch as simple as possible.
  • Balance your machine well, but make sure it works ok unbalanced.
  • Place your trigger or actuator as close to the axle as possible. This reduces the shock load.
  • Tune your machine with many practice shots before any competition throw.
  • Do not expect any mechanical gizmo to work as expected when spinning at high speed.


Competitive Advice
Torsion and Youth Lineup, 2003

Once you have built a large machine, it must go to a competition!

  • Your catapult design must account for double-duty. Chunkin and fast assembly at a remote site.
  • Follow the rules! There aren't that many. It would be embarrassing to forget one.
  • Keep it clean when TV cameras are around. You may never live it down.
  • Don't use "compressed air helium". Dat is 'gainst the rules.
  • Don't expect to win your first year out. Assume failure and have fun mocking those who missed this advice.
  • Study as many other machines as you can while you are there. Before they break is usually best.
  • Keep your prize punkins in a "Punkin' Safe"


Buy a Trebuchet
Buy a Ballista
 
 
Home
 
Treatises
About
Philosophy
Members
Logs
In The News
Sponsors
Contact Us
Copyright
 
Engines Of War
Micro Treb
Baby Trebuchet
Treb Jr
Juggernaut
Juggernaut 2
Higgs
Pumpkin Putter
Baby Ballista
Ballista Jr
Mista Ballista
Baby Hatra Ballista
Hatra Jr
Baby Onager
Onager Jr
UTM
Baby ASOK
Cardan Treb
Scissor Treb
Kid-A-Pult
Vacuum Bazooka
Air Cannon Jr
 
Engineering
Frames
Slings
Triggers
Torsion
Winches
Centripetal
Advice
 
Battles
Extreme Chunk 2017
Extreme Chunk 2016
Extreme Chunk 2015
Punkin Chunk 2013
Higgins Siege The Day 2013
Punkin Chunk 2012
Punkin Chunk 2011
Punkin Chunk 2010
MathWorks 2010
Punkin Chunk 2009
Zukapult 2009
History Chunk 2009
Punkin Chunk 2008
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 © 2000-2017 Eric M. Ludlam All rights reserved.
Twas' brillig, and the slithy toves did gyre and gimble in the wabe...
Last Modified: 11/26/16