Larger bore actuation speed

[ollien]

Originally Posted by couvillion

Something like this

I've tended to think that something shape like this gives the most amount of force to start the system moving.

So I would use the cam to push the piston arm out slightly?

Originally Posted by hrench

Team 1108 has been doing pneumatic catapults for years with some winning designs.

We design so the cylinder isn't fully retracted so there is a 'chamber' in the back half. Something like 4-inches for a 12 inch stroke. We fill the cylinder with any-old slow valve while we're holding it down with an electro magnet holding a puck of steel on the catapult. Let go of the magnet and it flys!

Here's the magnet we're using this year...5.6 watts/ http://www.mcmaster.com/#5698k116/=118b3ox

Wow this is neat but I'm not sure how well we'd be able to mount it given our current setup. I will be sure to look into this though. Thank you! Do you have any pictures of how you've mounted this on your bot?