Help with piston in coaxial QEV (never encountered this b4)
Posted: Tue Jan 22, 2013 2:53 pm
Hi,
Apparently I have a problem with my QEV. The piston I tried making out of epoxy didn't work out too well for some reason, so I stuck to my good old pal, the hot glue. I had a coax QEV on one of my airguns before, but because I haven't used it for a long time it got messed up so I decided to make a new one.
The problem is the following: Sometimes all the air will go through the pistol valve (the trigger), and sometimes the piston will go back only after the pressure has dropped down to about 20 PSI (after about 80 PSI went through the trigger *facepalm*). About 25% of the times, the piston will go back VERY slowly, while making a wiggly sound (like the piston is wiggling inside), after the pressure had dropped down to 30~40 PSI (from 100).
The piston itself has been tested without any slotting (didn't work almost at all), so I slotted it once (got better, but still almost no functionality), then slotted it twice (at least now it's going back lol). I'm afraid to slot it again.
See pictures below please!
P.S: I have been trying WD-40, Vaseline and olive oil as lubricant, same results with each one.
**Note: It is ugly because I haven't down any finishing to it yet.
Pictures:
Thanks in advance! [/u]
Apparently I have a problem with my QEV. The piston I tried making out of epoxy didn't work out too well for some reason, so I stuck to my good old pal, the hot glue. I had a coax QEV on one of my airguns before, but because I haven't used it for a long time it got messed up so I decided to make a new one.
The problem is the following: Sometimes all the air will go through the pistol valve (the trigger), and sometimes the piston will go back only after the pressure has dropped down to about 20 PSI (after about 80 PSI went through the trigger *facepalm*). About 25% of the times, the piston will go back VERY slowly, while making a wiggly sound (like the piston is wiggling inside), after the pressure had dropped down to 30~40 PSI (from 100).
The piston itself has been tested without any slotting (didn't work almost at all), so I slotted it once (got better, but still almost no functionality), then slotted it twice (at least now it's going back lol). I'm afraid to slot it again.
See pictures below please!
P.S: I have been trying WD-40, Vaseline and olive oil as lubricant, same results with each one.
**Note: It is ugly because I haven't down any finishing to it yet.
Pictures:
Thanks in advance! [/u]