Quote:
Originally Posted by stovie
I'm also planning on having the pressure constant so say I have 15 psi on my 3.88 inch pistons, that's a constant down force of 58.2 pounds is it not?? And if I remember correctly at 15 psi 450 psi equals 30 times the air
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Extending that reasoning (and I'm not sure it's correct), with (say) a 4" (= 1/3 foot) stroke, that's 58.2/3 = 19.4 ft.lbs of work. At 1500rpm and x 3 cylinders that's 18HP.
With a total stored volume of 96 liters, at 450psi and assuming it does go to 30 times that at 15psi, that's 2880l. In a 2.0l air motor, that's 1440 revolutions (assuming 100% volumetric efficiency). If you ran it at a constant (or average) 1500 rpm that's a little less than 1 minute of operation. At 18HP.
There's room for some exploration of the idea of using compressed air but not to run a motor directly with that kind of pressure.