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Unread 21-03-2014, 08:59
gpetilli gpetilli is offline
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Re: Pistons not extending fast enough?

I do want to clarify few things:

1) You absolutely need a storage tank on the high pressure side. 120PSI is twice the working 60PSI so you can store twice the air.

2) several posts mention a storage tank per cylinder after the solenoid. This only works if you use the latch and are pre-charging the air spring.

3) The automation direct solenoids have 3.3x the Cv of the previously legal valves, however they are much bigger and heavier. I think there is a voucher on TIMS. http://www.automationdirect.com/adc/...)/AVS-5211-24D

4) The input side of the cylinder is only half of the problem. You also need to exhaust the air on the other side of the piston. Instead of connecting the exhaust side to the other side of the solenoid, we do not put a fitting on the exhaust side of the cylinder and use gravity (and a small diameter cylinder if necessary) to return the catapult to the latch position.