Looking for any experience with this...
As far as my .30 FX Bobcat Mk2, I still don't really have it back to where it used to be. I keep having problems with speed, and I think it's the reg., but I rebuilt the Huma with new seat, and o-rings, adjusted, and still get a little "creep." Its weird though because it will gradually go up over a period of days, and not the normal symptoms of creep as we discuss online here.
Say for instance I have it set for 155 bar, and I shoot it at 155, it will be fine, but a couple days later it will be at 160, and shoot fine, then a couple more days at 165 and be OK. But of course my velocity changes each time (usually downwards). So then I go in, and turn the reg. back down to 155 bar, and it starts all over again... The adjust isn't rotating or moving when its in the gun, it just seems to settle out higher and higher until it gets to about 170 bar.
I don't think it's the seat or pin, or o-rings, since I've replaced them at least once, and rebuilt the reg., plus flipped over the delrin disc once after that. I'm starting to think the Belleville washers have lost their "spring", so I'm going to replace them and see if that was it. Have you ever heard of that happening before?
I was thinking that should this happen, the reg. pressure will go down, and not up. But then again, it seems that a compressed washer stack would make the valve seat further from the pin, and that’s what you're doing when you screw the reg. adjustment counter clockwise to increase pressure. Heck, I have no idea, but it is frustrating.
In any case, it's too close to EBR to keep messing with it, so I ordered a new reg. just to be sure. I know I could have ordered another Belleville washer stack, but this gets to be very time consuming, if only I were actually retired.
For what its worth, that reg. has been in the Bobcat for over 2 1/2 years at about 160 to 165 bar, and I know springs loose their elasticity over time, so this is the only thing that makes sense to me. Of course, I could be totally wrong...
Anyone, anyone, Bueller, anyone?
As far as my .30 FX Bobcat Mk2, I still don't really have it back to where it used to be. I keep having problems with speed, and I think it's the reg., but I rebuilt the Huma with new seat, and o-rings, adjusted, and still get a little "creep." Its weird though because it will gradually go up over a period of days, and not the normal symptoms of creep as we discuss online here.
Say for instance I have it set for 155 bar, and I shoot it at 155, it will be fine, but a couple days later it will be at 160, and shoot fine, then a couple more days at 165 and be OK. But of course my velocity changes each time (usually downwards). So then I go in, and turn the reg. back down to 155 bar, and it starts all over again... The adjust isn't rotating or moving when its in the gun, it just seems to settle out higher and higher until it gets to about 170 bar.
I don't think it's the seat or pin, or o-rings, since I've replaced them at least once, and rebuilt the reg., plus flipped over the delrin disc once after that. I'm starting to think the Belleville washers have lost their "spring", so I'm going to replace them and see if that was it. Have you ever heard of that happening before?
I was thinking that should this happen, the reg. pressure will go down, and not up. But then again, it seems that a compressed washer stack would make the valve seat further from the pin, and that’s what you're doing when you screw the reg. adjustment counter clockwise to increase pressure. Heck, I have no idea, but it is frustrating.
In any case, it's too close to EBR to keep messing with it, so I ordered a new reg. just to be sure. I know I could have ordered another Belleville washer stack, but this gets to be very time consuming, if only I were actually retired.
For what its worth, that reg. has been in the Bobcat for over 2 1/2 years at about 160 to 165 bar, and I know springs loose their elasticity over time, so this is the only thing that makes sense to me. Of course, I could be totally wrong...
Anyone, anyone, Bueller, anyone?