FX Don't Quite Understand?

[johnwoitalla]

How do the regulator/macro adjustment/micro adjustment wheel work together? If I change the regulator setting, does that have anything to do with the power at the muzzle? If so, how does that work? I watched a video in which a guy who was showing how to tune a Panthera, said that the macro wheel really doesn't do much, that the real change in power/velocity comes from the micro wheel. I have read the owner's manual, but come away still scratching my head as how all three interact and/or influence each other. If you would, please explain this whole shebang to me as if I was a fourth grader, your input will be very welcome. Thank you in advance, have a fun weekend.

 

[JackHughs]

There is only one hammer spring adjuster. Each click on the Micro wheel moves the adjuster a fixed distance. Each click on the Macro wheel moves the adjuster a distance equal to 5 clicks on the Micro wheel. The Macro is a coarse adjustment. The Micro is a fine adjustment.

The regulator adjusts available air pressure. A full discussion of the interaction between regulated pressure and hammer spring adjustment is a bit more than I can deal with at this time of the evening.

JackHughs

 

[Kgphotos]

Steve from AEAC on Youtube has a couple videos that cover air rifle tuning and go into the relationship between the hammer adjustments and the regulator. He is tuning an FX Crown in one and a Air Venturi Avenger in the other I believe, but the specific rifle isn't as important as the overall process that he is teaching. Your should watch those.

What caliber and projectile are you using? I shoot a Panthera 600mm .22 Superior Heavy liner with H&N 30 grain slugs. I could send you my tune numbers if you'd like.
Kenny

 

[6gun]

Regulator is supply pressure. Basically it almost always likes to land at 150 bar unless you're a light low power pellet shooter. The other two are the same adjustment in 2 different resolutions. Big moves with pre set steps and fine adjustment that can then make those infinitely variable. It seems overwhelming, it's very simple. It's just like any other airgun except it was made by an aerospace grade machine shop with no budget constraints.

 

[johnwoitalla]

Steve from AEAC on Youtube has a couple videos that cover air rifle tuning and go into the relationship between the hammer adjustments and the regulator. He is tuning an FX Crown in one and a Air Venturi Avenger in the other I believe, but the specific rifle isn't as important as the overall process that he is teaching. Your should watch those.

What caliber and projectile are you using? I shoot a Panthera 600mm .22 Superior Heavy liner with H&N 30 grain slugs. I could send you my tune numbers if you'd like.
Kenny

I have an FX King with a 600mm barrel. Right now I am shooting 22gr FX Hybrids, but will probably switch to H&N Precision 33gr slugs when they come in(I have them on back order at Pyramid Air).

 

[6gun]

I have an FX King with a 600mm barrel. Right now I am shooting 22gr FX Hybrids, but will probably switch to H&N Precision 33gr slugs when they come in(I have them on back order at Pyramid Air).

Try 23 and 34 javelines too. Hybrids have shown to be slower and less precise than those two for me but they can have much more dramatic on target effects. I have a ton of them that I will only use inside 100 yards for rabbits and squirrels. Which is probably never.

 

[CoyoteGod]

These videos will help you understand the relationship between the tune settings as needed pellet speed, barrel length/twist, the reg pressure, macro, micro and value all work together. One change affects another. Harmony is what you’re looking for. They are very straightforward and simple to follow.

You will not be a pro tuner out of the box, but learning and practicing/perfecting is part of the fun. Whatever you do DON’T MAKE BIG ADJUSTMENTS. Have a caliper and a measuring tape and take notes. HAVE FUN!

 

[6gun]

If you're like me it will be confusing and seem like you MUST do xyz and harmony this and that. Then all of a sudden you have an aha moment and realize how it works together as a system and forget the markings on the adjustments and let the gun speak to you. It will tell you when it's running well by sound. Kinda like setting up and timing a carbureted engine.

 

[357cal]

How do the regulator/macro adjustment/micro adjustment wheel work together? If I change the regulator setting, does that have anything to do with the power at the muzzle? If so, how does that work? I watched a video in which a guy who was showing how to tune a Panthera, said that the macro wheel really doesn't do much, that the real change in power/velocity comes from the micro wheel. I have read the owner's manual, but come away still scratching my head as how all three interact and/or influence each other. If you would, please explain this whole shebang to me as if I was a fourth grader, your input will be very welcome. Thank you in advance, have a fun weekend.

How the Regulator, Macro, and Micro Adjustments Work Together​

Think of your air rifle like a garden hose:

• The regulator is like the main water valve—it controls how much water (air pressure) is available.
• The macro wheel is like a big nozzle—it makes broad changes to how much water comes out.
• The micro wheel is like a fine-tuning sprayer—it lets you make precise adjustments to the flow.

Does Changing the Regulator Affect Muzzle Power?​

Yes! The regulator sets the baseline pressure that feeds into the system. If you increase the regulator pressure, more air is available, which can lead to higher velocity—but only if the hammer and valve can handle it.

What Does Each Adjustment Actually Do?​

1. Regulator – Controls the air pressure going into the system. Higher pressure = potentially more power.
2. Macro Wheel – Makes big adjustments, but doesn’t always have a huge effect.
3. Micro Wheel – Fine-tunes the hammer spring tension, which directly affects how much air is released per shot.

Why Does the Micro Wheel Matter More?​

The micro wheel controls how hard the hammer hits the valve, which determines how much air is used per shot. If the hammer doesn’t hit hard enough, even high regulator pressure won’t give you more power. That’s why the micro wheel is the real game-changer.

How to Tune It​

1. Set the regulator pressure to a reasonable level.
2. Adjust the macro wheel to a general power setting.
3. Fine-tune with the micro wheel to get the best velocity and consistency.

So, the regulator sets the stage, the macro wheel makes broad changes, and the micro wheel fine-tunes the performance. Hope that clears things up!

Enjoy your weekend, Wild!

 

[CoyoteGod]

If you're like me it will be confusing and seem like you MUST do xyz and harmony this and that. Then all of a sudden you have an aha moment and realize how it works together as a system and forget the markings on the adjustments and let the gun speak to you. It will tell you when it's running well by sound. Kinda like setting up and timing a carbureted engine.

Couldn’t agree more! Once I had a general understanding of the settings and if I moved this or that and what caused “this” to happen with the tune in a basic sense, such as, “why did my velocity go down all of a sudden?”, I was able to get rolling pretty quickly. I definitely got to where feel and sound of the Airgun became a huge part of tuning much like it is for you.

 

[Jay308]

Tuning to the knee, best explanation I have seen.

 

[johnwoitalla]

How the Regulator, Macro, and Micro Adjustments Work Together​

Think of your air rifle like a garden hose:

• The regulator is like the main water valve—it controls how much water (air pressure) is available.
• The macro wheel is like a big nozzle—it makes broad changes to how much water comes out.
• The micro wheel is like a fine-tuning sprayer—it lets you make precise adjustments to the flow.

Does Changing the Regulator Affect Muzzle Power?​

Yes! The regulator sets the baseline pressure that feeds into the system. If you increase the regulator pressure, more air is available, which can lead to higher velocity—but only if the hammer and valve can handle it.

What Does Each Adjustment Actually Do?​

1. Regulator – Controls the air pressure going into the system. Higher pressure = potentially more power.
2. Macro Wheel – Makes big adjustments, but doesn’t always have a huge effect.
3. Micro Wheel – Fine-tunes the hammer spring tension, which directly affects how much air is released per shot.

Why Does the Micro Wheel Matter More?​

The micro wheel controls how hard the hammer hits the valve, which determines how much air is used per shot. If the hammer doesn’t hit hard enough, even high regulator pressure won’t give you more power. That’s why the micro wheel is the real game-changer.

How to Tune It​

1. Set the regulator pressure to a reasonable level.
2. Adjust the macro wheel to a general power setting.
3. Fine-tune with the micro wheel to get the best velocity and consistency.

So, the regulator sets the stage, the macro wheel makes broad changes, and the micro wheel fine-tunes the performance. Hope that clears things up!

Enjoy your weekend, Wild!

Gracias, very clear. I just wish the manufacturers would more thought and effort into their owner's manuals. It would make for less headaches and fewer warranty repairs.

 

[6gun]

Couldn’t agree more! Once I had a general understanding of the settings and if I moved this or that and what caused “this” to happen with the tune in a basic sense, such as, “why did my velocity go down all of a sudden?”, I was able to get rolling pretty quickly. I definitely got to where feel and sound of the Airgun became a huge part of tuning much like it is for you.

I see my impact as a cross between a science experiment and a musical instrument. Depending on how you intonate and tune the guitar, the lab equipment provides you with different outcomes for the experiment that sound drastically different. Hammer strike, refresh rate, muzzle report, extreme spread, group size. Etc.

1 change at a time is the safest route so you can track cause and effect. Keep meticulous notes so you can always go back that way.