FX Maverick Problem adjust hammer spring

[Marc from France]

Hello,

I can't adjust the hammer spring. Up to position 3 of the dial the power increases well, when I reach position 4/5/6/7 the power drops considerably. I screwed the hammer screw all the way in and tried to unscrew it by a quarter turn and it's still the same. My regulation is 150/115 bars, my Maverick is in .22 and for the moment I only shot Pellets exactely jsb 15.89
Thanks

 

[Marc from France]

I want run around 900fps with 15.89, maybe my pressure reg is too hight ?

 

[keith1]

Hope i dont have problem with my ghost

 

[Rich_B]

Sounds like you are over hammering the valve above 3. Screw the hammer screw most of the way in and do your quarter turn out, but set it on setting 7 each time you check the velocity. With 115 bar regulator pressure, those pellets should be going supersonic pretty easily.

 

[whatsights]

Start with the second reg on 70 to 75, hammer about 5 full turns out. Shoult get you in the ballpark.

 

[Marc from France]

I set my pressures to 120/80 and 115/75 and whatever the pw position it's the same I have power inconsistencies and I noticed on high powers it's very noisy like a large quantity of air escaping

 

[Marc from France]

I don't understand, when I set it to pw 7 each time, once my speed starts to go down, I say to myself it's ok, but no when I put it on pw1 the speed is even higher....

 

[Tom T]

I set my pressures to 120/80 and 115/75 and whatever the pw position it's the same I have power inconsistencies and I noticed on high powers it's very noisy like a large quantity of air escaping

Excuse me for chiming in, I’m new to the concept of “tuning” the regulators and have never done it, BUT are you degassing when lowering the regulator pressure??? From what I’ve read, you can damage it if done incorrectly…

 

[Marc from France]

Yes I degassing of course

 

[Scotty1]

You are over-driving your valve at the higher numbers. You can turn your regulator pressures up to alleviate this. Try 140/110

 

[Marc from France]

Ok Scotty I try tonight

 

[HogKiller]

Start with the second reg on 70 to 75, hammer about 5 full turns out. Shoult get you in the ballpark.

5 turns is 5mm that's a touch much IMHO. The overall measurement only needs to be about 18-19mm, at 21.5 or so it'll mess up the trigger, as it it won't reset.

 

[HogKiller]

Excuse me for chiming in, I’m new to the concept of “tuning” the regulators and have never done it, BUT are you degassing when lowering the regulator pressure??? From what I’ve read, you can damage it if done incorrectly…

The regs have a brass bit and another 'hopefully' brass bit with a Delron insert, going against the Delron will put a divot in it. WHICH it gets just in normal usage. Official kicker, some of the brass/delron bits had the delron too long, almost impossible to get enough pressure out of the gun, it need to protrude about .2mm above the top of the brass. Polishing both mating surfaces helps a bit with regulator creep. Oh and if you do take them apart, when reassembling put a tiny bit of synthetic motor oil on the o-rings, and NO it won't EXPLODE, the 0-rings will thank you, oh and a bit on the Belleville washers also, friction is not a good thing.

 

[Trucker3573]

If you turned the little internal adjuster screw all the way in clockwise and it’s doing the same your gun must have the wrong hammer weight. Did you buy it new or used ? Sounds like the heavy .30 hammer in the .22 or maybe even a tungsten.

 

[Marc from France]

I have 11 grammes hammer.