Thank you replying. I have viewed some paintball regulator and I think the AG1 paintball regulator from Rap4 is good.
The ram I plan to use is 63mm bore and 50mm stroke. (I don't know why it is 63mm), operating at 1 Mpa.
I also wonder that the flipper force should be just upper opponent weight or much higher? The force according to my calculation the ram ouput is 3117N and the flipper as a lever it is 623N at the tip.
CO2 I know it can only up to 7Mpa but High Pressure Air can up to 30Mpa, why people choose CO2 but not HPA?
By the way, I found there's light build in the receiver and ESC, when I close the switch they will light up. Do I need a extra light to indicate the robot has powered up?