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One DOT certified CF 9 liter tank is very much the same any other DOT certified CF 9 liter Tank. The various manufactured valves and fill whips are all very much different from each other. Pick the valve you like and buy accordingly. I had a JB valve at one time and I didn't like it. It may...

AOA sells an excellent 36" whip. It is light, flexible, very well made, and can be purchased with or without fittings. I have two of these. JackHughs

Three hours. That's when I checked to see if there was an air bubble in the grease. I didn't notice any change in performance so I assume that the compressor was not over greased. JackHughs

I have the 5/8" version of the Amazon fill station on a 3 liter Tuxing tank. It works fine and has the added bonus of a separate fill fitting. This fitting allows "cascading" another tank. JackHughs

GX saves money by using the the plug as an "on-off" switch. Personally, I believe this practice is hard on the electronics because I believe that the ground should always be securely established before the power supply is energized. Early on, I had some issues with the power supply switching...

Yes. The CS4-i does not have an on/off switch for the power supply. I installed an in-line on/off power switch on my CS4-i. If I were to buy another compressor, I would buy the CS4 with the external power supply. Both the internal power supply and the compressor itself generate heat within...

While the compressor is running, check to see that the tank gauge and the compressor gauge readings agree. If the two gauges show substantially different readings, always fill to the highest reading gauge to avoid safety issues. For example, if the compressor gauge reads 4500 psi but the tank...

Interesting thread. Being easily influenced, I just ordered a 25 barrel for my Benjamin Kratos from AR. Unfortunately, he is out of 25 pins (probe) so I get to make a sleeve to fit a .177 or a .22 probe. This should be interesting. Time to dust off the Sherline. JackHughs

I have an older second-hand Jubilee valve that I was told had a flow restrictor installed. If I just "crack" the valve - 1/4 to 1/2 turn, it will stop flowing at approximately 3,000 psi. I then open the valve one or more turns and it will then flow up to the internal pressure. The internal...

I'm showing my age but beeswax does a great job of preventing fasteners from vibrating loose while allowing for manual adjustment. JackHughs

Perhaps the correct method depends on the design of the rifle. I have a stock .22 700 cm Panthera. It will not perform at all at low reg settings. I suspect it's an engineering flaw in the valve system. I have a Benjamin Kratos that I shoot tethered to an external regulator. It tunes...

Applying Boyle's Law for an ideal gas (P1V1=P2V2), a 6.8 liter tank will "hold" app. 74 cu feet of air at 4500 psi. Because air does not behave as an ideal gas at 4500 psi, the actual capacity is calculated using Van Der Walls constants. A 6.8 liter tank may be advertised as a 74 cu foot...

Pardon me. I wrote an imprecise question. I'm looking for 25 shot, .22 pellet groups outdoors at 100 yards. I'm thinking that 1 1/2" would be respectable. On a related topic, I would really like to see some pictures of the winning targets from the 2025 RMAC 100 yard benchrest challenge. So...

I'm new to to 100 yard pellet shooting. What is considered to be a good group size shooting .22 pellets at 100 yards outdoors? JackHughs

I have two 12 round and two 18 round QD Fox magazines for my Panthera. They all get used a lot and they are all well made and reliable. There may be better mag's available but these are priced right and work just fine for me. JackHughs

I agree. The small volume cf tanks are not inherently less safe or less reliable than the larger volume tanks. However, they can be less useful depending on your intended use. I have a 3 liter Tuxing which is great for pistol or low power rifle target shooting but is all but useless for the...

The hose had a coiled spring strain relief. I moved it out of the way to take the picture. Aside from old age, this hose was permanently connected to the DIN 300 fitting. The replacement hose will connect using a Foster fitting so the hose can be removed and stored stress free between uses...

From time to time, persons comment on the safety of equipment operating at 4500 psi. I had a microbore hose fail this morning while shooting a tethered Panthera. There was no earth shattering ka-boom, only the sad hiss of a 9 liter tank venting to atmosphere. The hose was in-service for 19...

This has happened to me three times - twice within the first two days of ownership and once a few days ago. In each instance, unplugging the compressor, waiting about 10 minutes and plugging it back in did the trick. Sometimes I question the wisdom of using the plug as an on/off switch...

I have two 9 liter tanks and one of the 3 Liter Tuxing tanks show in post No. 6. They each have their uses. If I were to have only one tank, I'd choose a 6.8 liter - no too heavy and sufficient air storage. Yes. a 6.8 liter tank can be filled with a CS4-i. I suggest filling in stages with...