Tuning FX Crown - Service reg or upgrade++

[ChuckInOhio]

i need to service my regulator as I’ve moved past regulator creep to variations in strings while shooting. I had been thinking of just getting a Huma reg and while on their site I saw the high flow probe and upgraded transfer port. Would I get much use out of upgrading all three at this point if I’m only using pellets? I’d like to play around with slugs in the future so was just wondering about going all in while I have the rifle apart. 

 

[qball]

If you are shooting pellets then don’t bother with any of the upgrades because your consistency will decrease. Just rebuild the reg with a factory rebuild kit, call FX directly to get the kit. 

 

[douger]

OEM REGS ARE GOOD REGS HUMA ARE FANTASTIC ALSO ID PUT A PIN PROBE IN IT WITH PELLETS OR SLUGS HAVE HAD GREAT LUCK WITH THEM PLUS THE DUEL PORT IS BETTER FPS AS MOST GUNSARE RUNNING THEM NOW

 

[corny]

If your current ES is tight…I wouldn’t mess with opening the air transfer ports. 
unless you want to shoot heavies loads.

 

[ChRiSiS]

OEM REGS ARE GOOD REGS HUMA ARE FANTASTIC ALSO ID PUT A PIN PROBE IN IT WITH PELLETS OR SLUGS HAVE HAD GREAT LUCK WITH THEM PLUS THE DUEL PORT IS BETTER FPS AS MOST GUNSARE RUNNING THEM NOW

Hey Doug,

How’re you doing these days?

I have a question about you post above. Are you saying that the pin probes will also work fine with pellets as well? I have a 500mm .25 cal barrel that I am planning to put on my new Wildcat MK3 BT VP in .22 when it arrives. However I don’t have a .25 cal Wildcat pellet probe and when i ordered one I got shipped a pin probe instead. I am wondering if I should keep it and try it rather than retuning it and re-ordering a pellet probe.

Chris

 

[Long_Gun_Dallas]

Lots of users report jams with the pins and dual port. Only way to find out is try and see. The pin IMO isn't worth the tiny gains (if any) vs a ported OE probe. Same with the dual port. Ported standard inlet with yield the exact same results with port matched probe.

 

[qball]

Pin probe works with pellets and dual transfer port most of the time but if the cavity is deep the skirt of the pellet may not go fully pass the dual transfer port. Also without the choke point of the smaller port the ES will very likely to open up and your reg creep will be very obvious. 

 

[gfmiller58]

I have had absolutely no problem with pellets using a Huma pin probe and the FX dual transfer port in my Crown Continuum. I chronographed 18 different projectiles with the pellet probe, pin probe, 380 mm barrel and the 600 mm barrel. The pin probe had no effect on velocity with the short barrel. Using the long barrel, the pin probe adds another 10 - 20 fps depending upon the projectile. There was no discernible difference in accuracy between the two probe types. 

George

 

[ChuckInOhio]

Thanks for all the feedback. At this point I’m thinking I’ll either service the reg or get the Huma reg and skip the rest of the proposed upgrades. I’ll give FX a call about the service kit. Thanks again!

 

[ChRiSiS]

Thanks to Long_Gun_Dallas, qball, and gfmiller58 for the feedback on the pin probe. I think I’m gonna try it and see if it works. My FX Wildcat Mk3 BT VP from Utah Air literally just arrived, so I’m gonna go unbox it and shoot a few rounds just for fun before I start messing around with it.

 

[qball]

Another way to look at it is if you need the pin probe and dual TP to get to the speed you want shooting pellets in FX guns then your need a better tune. If I can get 25 grain .25 pellets to shoot 900fps out of 380mm barrel Dreamline compact with zero upgrades then you can shoot pellets @900fps out of any FX gun with zero upgrades. 


pin probe is worth upgrade for slugs but possible issues and completely unnecessary for pellets. Yes, I’ve shot pellets with pin probe with no issues but YMMV.

 

[ChRiSiS]

Another way to look at it is if you need the pin probe and dual TP to get to the speed you want shooting pellets in FX guns then your need a better tune. If I can get 25 grain .25 pellets to shoot 900fps out of 380mm barrel Dreamline compact with zero upgrades then you can shoot pellets @900fps out of any FX gun with zero upgrades. 


pin probe is worth upgrade for slugs but possible issues and completely unnecessary for pellets. Yes, I’ve shot pellets with pin probe with no issues but YMMV.

qball,

I completely agree. None of my other FX airguns have pin probes and I get very high velocities out of them when I want. The issue here is simply that I plan to convert my .22 Wildcat MK3 BT to a .25 Compact with a 480cc bottle using a spare 500mm barrel from my Impact and a Wildcat shroud I had from my original, now sold, Wildcat Compact. I ordered a pellet probe but got shipped a pin probe instead, so I really wanted to know if the pin could work for pellets. Its definitely not necessary!

 

[Mask]

So guys at the end of the speeches can you confirm to me that with my original probe, modified as many users of AirgunNation have done, I get the same power that I would get by mounting the Huma needle probe? I read a few weeks ago about a forum user that with the Huma pin probe she got, with the cal25 crown, 14/18 feet more speed, but I don't know if she had made any changes to the original probe . If he had modified it and the original vs pin probe comparison gave 18 feet more, then he may be worth the expense of buying the pin probe ... otherwise not. I use, 90%, 2.2 grams jsb, so I wouldn't mind those extra feet, so I'm looking for news / confirmations, so as not to throw € in a useless purchase. Thanks for any information.

 

[Mask]

Ahhhh.... I have a crown cal. 25, with 600 mm barrel for slug. 

 

[lamarkeiko]

I have a .25 Crown with 600mm Superior liner that I installed with a new Huma-Air dual transfer port last summer, and at that time had no change in velocity. Just reciently I installed a Huma high flow pin probe and immediately got an increase of 15-20 fps velocity. I believe you need to change out both to see a change in velocity.

 

[Mask]

@Lamarkeiko Thank you for your answer. 

I have already installed a Huma double door on my crown and it is for this reason that, if there are real advantages, I would also like to install a Huma needle shot pusher. 

 

[seniorasi]

Great thread!

 

[Mask]

neat Huma pin probe ...... I will keep you informed if and what benefits I got.

 

[ChRiSiS]

neat Huma pin probe ...... I will keep you informed if and what benefits I got.

I’ll be very interested in how this turns out, going from having the dual transfer port installed and then adding the pin probe. I just went the exact opposite way, starting with a pin probe in my .25 cal Wildcat MK3 BT Compact and then changing the transfer port on my barrel. Here’s an excerpt from another post that I had made earlier regarding the power available from at WC MK3 BT Compact.



“I decided to change the transfer port from the simple hole to a Huma dual slot High Flow port that I had (my barrel dates from February 2021 and only has a single hole).

With only that change I got a dramatic increase in speeds and power. Now I was getting this…

FX 34 grain pellets; 1st Reg 160 Bar; 2nd Reg 130 Bar; Hammer adjustment maxed.

HW Shots High Low Avg FPE ES SD

Wildcat MK3 BT Compact 7 10 902 891 896 60.0 1.2% 4.2 

7 10. 932 915 924 64.4 1.7% 5.8 [04/13/22] with Huma High Flow TP

That’s an increase of 24 FPS and 4.4 FPE. Yes, the Extreme Spread increased a bit, but frankly anything below 2.0 FPS is simply not an issue for me, especially when I am chasing max power.”

So, bottom line: The dual hole transfer port did make a significant difference.

Chris

 

[MEC17670]

I have a Crown mk2, which Huma reg should I get? I'm not sure what size I need. Thanks, Mike