shatter_storm
09-09-2004, 11:25 PM
Alrighty, I had a guy at the shop upgrade his mag. He had a PF left powdercoated body, level 7 (the all metal bolt w/no foamie is a 7, right?), classic valve (I can get S/N by this weekend if necessary, it's got three stars), dye double trigger gripframe, and as far as I know stock on/off and rail. He bought a ULE body and a LX kit.
First, getting the o-rings on the LX to fit was a pain, as I think the LX's are being sent out with oversized rings nowadays, but we borrowed one from an older kit that worked. Gas it up and it vents down the barrel. Initial setup was stock spring, no shims in the LX, 1.5 carrier, adjusted the reg upwards to compensate. Since the initial setup we've cycled through all the springs, both other o-rings (which fit the bolt stem very loosely if at all on even the tightest carrier), all the lower end carrier sizes, various input pressures and various regulator settings.
Now, I think the carrier o-ring is alright fit-wise as with the 1.5 carrier it has some drag on the bolt stem but not too much, but the marker still vents. Dropping carriers to .5 or 0 causes bolt stick but still allows the leak down the barrel.
The marker will cycle though we havn't put paint through it. Holding the trigger back stops the leak. Pushing around on the bolt face doesn't appear to change the sound of the leak. No lawn sprinklerage. We've swapped his air fittings and tanks twice to make sure the air supply is working as intended.
The only two things I'm left with are:
1) the reg seat/pin. If the reg fails it dumps full input pressure into the dump chamber and causes leaks, right?
2) the sear and sear pin. The sear pin is probably not the stock/original length, everyone with a 'mag around here fiddles with the pin to make their mag have bounce. If I knew how to measure it I could see if it's in spec. I think if it's too long it presses up against the on/off and causes a vent, correct?
Can any techs with a better understanding of all this give me some idea of what parts to order? I'll need more carrier o-rings anyways, but should I grab some reg seats and pins while I'm at it?
First, getting the o-rings on the LX to fit was a pain, as I think the LX's are being sent out with oversized rings nowadays, but we borrowed one from an older kit that worked. Gas it up and it vents down the barrel. Initial setup was stock spring, no shims in the LX, 1.5 carrier, adjusted the reg upwards to compensate. Since the initial setup we've cycled through all the springs, both other o-rings (which fit the bolt stem very loosely if at all on even the tightest carrier), all the lower end carrier sizes, various input pressures and various regulator settings.
Now, I think the carrier o-ring is alright fit-wise as with the 1.5 carrier it has some drag on the bolt stem but not too much, but the marker still vents. Dropping carriers to .5 or 0 causes bolt stick but still allows the leak down the barrel.
The marker will cycle though we havn't put paint through it. Holding the trigger back stops the leak. Pushing around on the bolt face doesn't appear to change the sound of the leak. No lawn sprinklerage. We've swapped his air fittings and tanks twice to make sure the air supply is working as intended.
The only two things I'm left with are:
1) the reg seat/pin. If the reg fails it dumps full input pressure into the dump chamber and causes leaks, right?
2) the sear and sear pin. The sear pin is probably not the stock/original length, everyone with a 'mag around here fiddles with the pin to make their mag have bounce. If I knew how to measure it I could see if it's in spec. I think if it's too long it presses up against the on/off and causes a vent, correct?
Can any techs with a better understanding of all this give me some idea of what parts to order? I'll need more carrier o-rings anyways, but should I grab some reg seats and pins while I'm at it?