Quote Originally Posted by Haywire
Also that is a lot more flips than I was expecting to get out of the bottle so I'll see about moving to a 12oz one that is lying around the house somewhere.
FP using Hannibalito III gets enough shots from a 12oz bottle. So, why not?

One small question, what ground clearance between the arena and the base of your chassis would be good? This is for running at the roaming robots type events so the arena gets quite damaged towards the end.
Each to his own in this case, but I prefer more grundclearance. Getting flipped is less annoying than get stuck on a toothpick and left for death by the opponents.

What issues are there with valves and failsafing? I take it you just need a failsafe to keep the last known command on the channel the valve is on so it willnot fire when signal is lost?
A failsafe just should do what it says, making a fail situation safe. The ram in or out, who cares , as long it can't move in the failsaved situation.