Just put an SP100 spring in my CA Aug A1, expecting it to give me 370-380fps. The chronograph at AEX told me I was only getting 350-355. Not much of a bump from the stock CA spring. Any former or current Aug owners with tips or suggestions on ways to improve my compression? I could go the stiffer spring route, but would like to ID the loss of compression instead. I did a few lo-tech mods to my outer barrel so that it fits more snugly in the receiver. That was some time ago, and after I did that, it was actually shooting in the 360-365 range! Strange that a spring upgrade would give lower fps. Thanks in advance...
Gen. George S. Patton said... Tanks. He said tanks a lot.
my friend had the same problem, i think the piston head needed to be sealed or somthing
"its god's job to judge the terrorist; its our job to arrange their meeting" -USMC- my senior quote
I would be money the seal around the piston head is bad. slide the piston through the cylinder up and down a few times. As you do that place your finger over the nozzle (make sure your feed nozzle) is on the end of the cylinder. Can you push the piston easily or does it feel like there is a lot of pressure on it? If no pressure try lubing the seals.
New o-ring on piston head or new piston head.
Thanks for the quick replies, but yes I tried all that stuff. Andrew asked me a bunch of questions about it when I was at AEX. I put a new O-ring in it, lubed, and I'm getting good, not perfect compression with my finger over the nozzle. One thing I told him that he didn't think would make a big difference in compression is that the O-ring inside the airseal nozzle is slightly damaged. Probably got chewed a little when I was sliding it back over the cylinder head nozzle.
Gen. George S. Patton said... Tanks. He said tanks a lot.
[quote="newmadtick"]Thanks for the quick replies, but yes I tried all that stuff. Andrew asked me a bunch of questions about it when I was at AEX. I put a new O-ring in it, lubed, and I'm getting good, not perfect compression with my finger over the nozzle. One thing I told him that he didn't think would make a big difference in compression is that the O-ring inside the airseal nozzle is slightly damaged. Probably got chewed a little when I was sliding it back over the cylinder head nozzle.
HeadOnTactical.com
Try testing compression with and without the nozzle on(^^^ what drew said)
Whoa, didn't think it could make a 30fps difference! I've tried the compression test with and without the airseal nozzle on. If there's a difference it is subtle. But, I think it's the next step in the process of elimination. Thanks again to all for the input. I'll probably post back on my success with the new nozzle.
Gen. George S. Patton said... Tanks. He said tanks a lot.