pic: Killer Bees Buzz19

[pfreivald]

Originally Posted by Jim Zondag

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.

Would you be willing to share the motor gearing and lead screw type (Multi-start? Single start? Diameter? Etc.) for this setup? I encouraged my team in this direction this year and they abandoned it after what I had deemed not enough prototyping. Alas.