psycix wrote:What operating pressure do you expect? And whats the diameter/surface area?
Attach a QEV with a reservoir and lets rock
I took it apart and attached a picture (the vernier caliper is open at 6 inches for scale) , I expect it can take at least 100 psi and with a 40mm bore, that's around 88Kg of force
still, looking at
heavy duty pneumatic nailers, they have pistons of much wider diameter and work in the same way a coaxial does, so perhaps the power of using this as a ram to actually fire stuff wouldn't be worthwhile. I think it would be more feasible to use it to knock open a large ball valve, hmmm...
BTW: "poppet valve struck by eccentric cam" equals "machinegun..."
That's exactly what I was thinking - for small bores at least, why bother with a piston valve? You could have a linear hammer driven by a motor (in the same manner as the piston on an
airsoft electric gun is driven - one could even lift the mechanism from such a gun) that knocks the poppet open at regular intervals. As to reloading, you could either fit a blow-forward valve, or even better, you can have it powered by the motor too out of phase with the hammer, that way all the air from the poppet is used for firing the projectile...
Food for thought... though on the other hand, if I'm going to bother with an electric motor, I might as well make
this - easier and less dead space
