1726 Prototype Testing

[TheOtherGuy]

Originally Posted by neoshaakti

oh man that catapult is BEAST
what did you use to power the catapult?

I cant really tell, but is ure robot within the 28 by 38 requirement ?

I wasn't working on that component, but I think we have 2 2" bore 10" stroke pneumatic pistons. We did a 'trick' (well known, I think) by keeping the cylinder from moving at 60psi with 3in. filled. Then we release the ball, and the air stored in the 1/3rd of the cylinder expands very quickly, giving us enough force to launch the ball.

Right now we're working on lowering the air consumption (right now a single shot drops our pressure from 115psi to about 80psi...)

And yes, I believe it is within the limits... However, this is a culmination of 2 prototypes, a mechanism mounting bracket, and last year's robot. The real thing will (hopefully) be much nicer