pic: Cyber Blue 234 - 2014 Robot -

[Chris Fultz]

The rear roller is covered the same as the front, it just wasn't in this photo.

The rear pneumatic is a two stage. Most of the time is is back 2" and acts as a stabilizer for the ball when driving or when ready to launch. IT also extend out fully for ball collection.

The front cylinders are larger to keep the arm in place when we retract the launcher. There is a lot of pull against that arm and the smaller cylinder like on the back was marginal.

The main reason for the mounting differences was to make the geometry work on the back - inside the footprint for start, back 2" for most, and at the right angle for ball collection when both stages are extended.