Quote:
Originally Posted by rockit science
You may want to look at the math AGAIN. The cylinders are rated on the actual piston diameter, so a 2" cylinder has a 2" diameter piston. When you do the math, a 2" piston has a surface area of 3.14 square inches. At 60 psig, this equals 188 lbs. of lifting force. In addition, I believe the longest stroke you can get is 24". You are correct that these things require a LOT of air volume. We used a 2" x 24" to lift ourselves in "Raising the Bar" and it took a good 30 seconds to get us all the way up.
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Its even worse than that. That 2" cylinder can hold 188 lbs - it cannot lift 188 lbs. We have done experiments on "Pneumatic Power" and I presented this at the National conference last year.