Tuning Maverick .25 Compact

[DonaAna1]

Is it common to loose air.

Let me explain. I topped off the bottle the last time I shot. Topped it off at 230 bar. I wasn't able to shot for a couple of weeks and I noticed the pressure had fallen from 230 bar to 180 bar. It is cooler now, but only about 20 degrees. Let me explain a little more. According to compressor gauge 250 bar on it shows 230 bar on gun gauge.

Either way I lost 50 bar with a 2 week wait and a loss of 20 degrees. 

Is this normal?

 

[dangolwinner]

No, that is not common for such a large drop in pressure to come from just the temp change. I keep my rifles in my garage and the temp drops about 30 degrees from midday to night sometimes. I have 5 FX rifles and the pressure will only drop about 10-15 bar from that temp swing on any given rifle. 

What you can do is take a picture of your pressure gauge about 20 mins after you fill your rifle and then let it set for a day or 2 and take another picture. If your loosing more that 20 bar of pressure, then chances are you have a slow leak.


Also what is your reg pressure gauge reading? Is it fluctuating as well, or it is consistent despite the reading on your pressure gauge? 

 

[MikeVV]

Put a little dish soap into a small spray bottle, shake well, let it sit to go back to liquid.

Start at one end of the gun and spray a "little" water at each air pressure joint separately on the gun. Watch for bubbles... Finish at the opposite end.

This way, you'll know exactly where the leak is.

Mike

 

[kball]

First thing I do when a slow leak like this develops is give the pressure gauges a slight turn, refill and wait-n-see. Don't start tearing things apart until the simple fix is tried.

 

[bigmike]

I agree with kball. I had my Maverick for about three months without a leak then one day it was down about 50 bar. Did the soapy water check and sure enough the bottle gauge threads were leaking. Mine took about 1 1/2 turns to seal it and it is holding steady. The next day I ordered three extra o’rings from FX in case I need one.