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Will
Hi, Thanks for visiting my website. My name is Will and if you have questions
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The Little Ogre Catapult

 

This is a catapult built by a web visitor (John L. and his son, of Oklahoma) They used my plans for the Ogre catapult but made some nice modifications. John himself did the drilling and pre-cutting but his son did all the assembly work. And they built it at a 75% scale of mine so it is a little smaller and a little more compact. This change in size was easy for them. All they did was take 75% of each measurement and used that. Here is a description of what they did and what improvements they made:

 

First off we only built it at 75% of original size (had size limitations, max 19", from the science teacher).  With building it at 75% we used 1"x2" instead of the 2"x3", they worked out great.  We also used a 3/8" x 8" bolt for the pivot instead of the broom stick or dowel.  We drilled ½" holes, inserted plastic sleeves to make it .385" so the 3/8" bolt slides freely.  And we used eyelets instead of hooks for the bungee cords and I also added a hook at the back so we could lock it down in the drawn position.

This method of using plastic sleeves to get a nice tolerance and a very free slide is an excellent improvement. It makes the catapult much more efficient.

My thanks to John and his son! And thanks for submitting the pictures. A lot of people ask about making the Ogre a little bit smaller and this is perfect.

The Little Ogre Catapult

The Little Ogre Catapult

The Catapult locked and ready to fire

 

Quick guide to my catapult making tutorials

The Table Top Troll Catapult

Table top catapult: The Troll
Rubber band powered

Mouse Trap Catapult

Mouse Trap Catapult -
fast to make

Torsion Catapult

Table Top Torsion Catapult
(Also known as a Mangonel )

Backyard Ogre Catapult

-Backyard Ogre -
3 foot Band powered catapult

Popsicle stick catapult

The Popsicle Stick catapult

The Wyvern Catapult

- The Wyvern -
3 foot Torsion Catapult

The Goblin Catapult

- Goblin catapult-
Rubber band powered and adjustable

The multipult

- The Multipult -
5 shot machine gun catapult

DaVinci Catapult

The DaVinci Catapult