Tuning FX 400 Repair And Tuning
- Thread starter Dave_lee
- Start date
The tank is simply a screw on replacement. If your rifle is unregulated from FX, you'll need to drill a small vent hole. Instructions for this are on the Huma site.
As for service, many custom techs don't work on FX rifles, so you might try FX USA for support. Pyramyd is the current US distributor, so you could ask them for advice.
As for service, many custom techs don't work on FX rifles, so you might try FX USA for support. Pyramyd is the current US distributor, so you could ask them for advice.
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You might want to contact FX USA in NC. The techs I know do not work on FX rifles, but I'm sure others do. Bottle and gauge installations are simply screw on replacements. If your rifle was unregulated new, then a small hole will need to be drilled in the receiver in order to vent the reg to the atmosphere, and the proper placement of the hole is critical to ensure its performance and avoid a leak.
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Go with the Huma for sure though and not the FX. The Huma is more compact and will maintain a little more plenum space.
Jking
Jking
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I replaced my FX reg with a Huma in my Royale 400 .22, and it works very well. I don't know how good the FX regs generally work in the Royale/Boss series, but mine was not very consistent. The Huma generally shows and ES in single digits or slightly over. Since my rifle was regulated when built, the vent hole was there, and the installation was very easy.
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I rebuilt one with out a regulator and it shot great on middle & high but low power not good
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For anyone installing a Huma reg in a Royale, I'll offer this advice, hopefully you can avoid a small problem I encountered. You will probably need to remove and adjust the reg a few times before getting it where you want. After removing the bottle, and assuming the bottle pressure is over the reg set point, the plenum will remain pressurized (if not, it will turn easily by hand). Do not drain it by loosening the bottle adapter in front. The escaping air may move the reg forward, in which case the adjusting screw can become stuck in the rear of the bottle adapter. If so, when you unscrew the adapter, you may also unscrew the reg adjusting screw, maybe all the way out. So, drain the plenum by loosening the housing for the stock screw, which is enough rear of the bottle adapter to avoid the reg contacting it, even if sucked forward to the screw housing hole. Even with care, the reg adjusting screw may move some in the disassembly process, so always measure the OAL of the reg before putting it in, then check the measurement when removing. The Huma reg works well, but its construction is a bit fragile, so one should exercise caution.
Ed
Ed
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It worked great after I got it all lined out. My 500 was old enough that it had a smaller valve although FAC than the newer models did. My gun was old enough too that it didn't have a transfer port power adjust. I mentioned the size difference in the two different regulators so I threw in this photo of the two together
And the valve difference
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Jking
I didn’t put a regulator in the FX 22, after the chronograph test and I was shooting a dime size group at 50 yards
I didn’t put a regulator in the FX 22, after the chronograph test and I was shooting a dime size group at 50 yards
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Yes, a regulator is not going to improve accuracy. However, it should give you more shots within the "sweet spot" of velocity. If you watch your bottle pressure and shot count, and refill to the pre-determined maximum "accuracy" level, results should be about the same (in theory, I suppose exactly the same). It just requires a level of attention that can be short cut with a regulator.
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I agree 100% with the above statement, mostly it's just a convenience of fill and shoot.
jking
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Been there done that but had completely forgot about it. Confused me a little when it happened. Sold the gun about 3 years ago and kind of regret doing it now.
Jk
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