pic: "You should never go against a robotics kid"

[PAR_WIG1350]

catapult is a very non-specific term.
there are many different types and forms of catapults:
-Trebuchet:
----Floating arm
----Fixed arm
-Torsion catapult
----Balista, Scorpion, etc. as well as the stereotypical 'catapult'
-Steam catapult
----launch aircraft off short runways
-magnetic catapult
-etc.

all of these fall under the category of "CATAPULT"

[Edoc'sil]

I was watching your slowmo vid and I had a sugestion or two. I built a true trebuchet with a free swinging counterweight of over three hundered lbs. I had some issues with rocking, and seeing as the thing is 16 ft tall I did not want it tipping over. After I added wheels and not only did it stop the treb from rocking it also increased the throwing distance by about 40 ft. Idk if it will increase your throwing distance, but it will stop some of the shaking that you could see in the last frames of the video. By the way I used wheels that were intended to be used on the Regolith, but were damaged while using them on our shop's floor. They come with nice bearings, maybe you have some extras tying around too.

[Eugene Fang]

Originally Posted by Edoc'sil

I was watching your slowmo vid and I had a sugestion or two. I built a true trebuchet with a free swinging counterweight of over three hundered lbs. I had some issues with rocking, and seeing as the thing is 16 ft tall I did not want it tipping over. After I added wheels and not only did it stop the treb from rocking it also increased the throwing distance by about 40 ft. Idk if it will increase your throwing distance, but it will stop some of the shaking that you could see in the last frames of the video. By the way I used wheels that were intended to be used on the Regolith, but were damaged while using them on our shop's floor. They come with nice bearings, maybe you have some extras tying around too.

You mean like this?
http://www.chiefdelphi.com/media/photos/32412

[Edoc'sil]

Yup exactly like that. Did it change your throwing distance at all?

[Eugene Fang]

Originally Posted by Edoc'sil

Yup exactly like that. Did it change your throwing distance at all?

Those wheels aren't actually attached. It was a robot teaser.