[Nick Lawrence]

Originally Posted by Jim Zondag

Right angle elbows:
Mcmaster_Carr>Push-to-Connect Tube Fittings for Air>90° Elbow Adapters, Tube Stem-to-Tube> PN 5779K685

The catapult has 6 Steel Extension springs. It has a lead screw adjustment on the spring deck which can adjust the spring draw about 5". Total spring force at max draw is about 1000 lbs. Overkill? probably: Awesome? Definitely.
We found that harder was better for shot repeatability.
At full force, it can throw the entire length of the field. We have software presets for all of the different shots we developed so we can change it on the fly instantly.

Later in the season, we were using a shorter shot than we started with, mainly due to the fact that 3 assist cycles were a bit rare at the beginning of the season, but very common at the end. A shorter shot is better suited to a 3 assist strategy.

http://youtu.be/1-oWAS9_Rl4 *copied to youtube*

We will post some CAD models of this design in the future. We still need to clean them up a bit.

Why?

Oh, because awesome. Fantastic machine.

-Nick