[AlexD744]

haha sorry for the terminology. Words aren't my specialty.

And neither are pneumatics. Our team has used pneumatics twice in our time as 744. Once in 2006 just for gear shifters (and way before my time) and once last year. But the decision to add pnuematics last year was about 6 days before build season ended. Needless to say, things were a bit crazy.

Anyway, the shaft on the cylinder that we would like to have used seems to have been grabbed by a clamp at one point. We had done our initial testing by just capping the one side and deploying air through the other, so we didn't realize the problem until we hooked both sides up to the solenoid. The seal holds when it's deployed, but not when it is retracted. This (older) cylinder seems to be a Packer product and I believe the part number is 1.06DSR24.0.

As far as your 2in cylinder, I am most concerned about the weight. We are really close to the 125 mark with this new system, so, I am skeptical that we would stay under with it.

As far as air goes, we will be installing 2 of those plastic tanks, each holding 44 cu in of air. I would estimate only getting about 1 good shots out of the 2in cylinder, but I don't know exactly how to calculate that. If you could explain how to do the calculation to figure out how many shots a certain cylinder gets when you have a certain amount of air that would be really cool. My best guess is that since the air is stored at 120 psi, and you are regulated to 60 psi, that you have, in the case of two 44 cu in tanks, 88*2=176 cu. in. of volume to work with. Then, in the case of the 2in bore 24in stroke cylinder, the volume required to fill the cylinder is 75.4 cu. in. (pi*r^2*h), and each deploy and retract would use that much of your 176 cu. in. Therefore, you would only get one shot as 150 of your 176 cu. in. would be used up. Is this right? Please correct me if I'm wrong, which I probably am, because, as I said, pneumatics is not my specialty. But I want to learn!