[Andrew Schuetze]

A quick study would seem to indicate that one would only need to constrict the flow of air entering the piston on the stroke one wants to limit the speed as the other side is open the atmosphere and just vents. However, taking this to an extreme limit though, if you completely or nearly completely close the needle valve on the vent side then is will limit the flow significantly and slow things down.

So here is my question, is it possible to use various settings on valves on both ends such that on the out stroke you have one speed and then on the in stroke a significantly different speed. a.ka. out - slow .... in - faster

Thanks,

APS