FX CROWN POWER MODIFICATIONS

Forums PCP Airguns FX CROWN POWER MODIFICATIONS

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    bzizzi373
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    I ordered and installed a Huma regulator in my Crown .25 well over a month ago, after over a year of frustrating regulator creep and trying every possible solution to remedy,the Huma finally solved the creep issue once and for all.I can let gun sit for weeks and shoots in the exact same. POI

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    sniperlabyo
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    After months of testing the titanium and brass regulator piston has pass and soon will be available. It has a small delrin seat inserted on the end of the piston and can be easily replaced. Adding stock or thicker spring washer will increase the regulator pressure output. With titanium piston and different thickness spring washer no need for complete HUMA reg.

    Testing for mechanical gauge creep, after a shot look at the reg gauge needle when it stop moving tap 2-3 times on the gauge lens if needle move up its a mechanical issue. 

    Testing for reg delrin creep, after a shot and gauge needle stop moving tap gauge lens about 2-3 times then mark the gauge needle I used blue painter tape now let gun idle overnight in the same space you mark the gauge if needed move about 5b it’s normal and 1st shot within the ES its normal. Know take a look at other regulated AG without a regulator pressure gauge guaranteed they all have reg creep you just don’t see it!!!

    not all impacts / Crown has reg creep mostly from owners jacking up the regulator pressure above 150b with the washers stack designed for less then 150b.

    another is a damaged piston in the the way of over compression of the adjustment screw while system is pressurized and tightening down on the adjustment screw while its bottom out on the piston and piston is bottom out on the action.

    maybe only 1% I seen impact have actual regulator creep before the owner get hold of the gun then the % of creep go up from there. With new metal piston drop in replacement is design to lower the reg creep from unexperienced users/owners.  

    Keep in mind FX has a 3 year warranty so if you have a reg issue they fix for free now if you have a HUMA regulator you will get billed — I seen so many HUMA’s gets replaced Because owners don’t know how to fix the regulator and FX don’t fix they replace them.

     

     

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    CHUCK
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    From Bob_O: "Just because you have an arrangement with Huma-Air…"

    Hey Bob_O, I don't have any "arrangements", financial or otherwise, with Huma-Air or anybody else either for that matter! I just tell people how to fix their regulators by replacing the one that's giving them a problem, with the worlds best regulators that are essentially problem free. I will gladly shout that out to the whole world so that others may set up their guns to be trouble free. FX Airguns are my absolute favorite airguns and I wouldn't buy anything else with my money, but that doesn't mean they don't have lots of problems. 

    But it seems to me that anytime you see my name on a topic you follow me to criticize anything I have to say…

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    sniperlabyo
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    HUMA reg copied the FX AMP reg and design the piston material to metal that has less creep under higher pressure— less piston movements on the delrin seals thats is consistently moving with a given shot. So the HUMA has orings and delrin that can wear overtime with use so I would think they both have the similar failure rate I know I seen all the parts that goes bad on the HUMA, now I see more HUMA in the FX AG’s and more HUMA failure increases with #. 

    HAMA shroud have there own services center and offer 3 year warranty 😎

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    Bob_O
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    Well Chuck, I don't follow you or anyone around the forum, I just follow topics of interest.  

    A lot of your posts were deleted recently, by you or admin, I don't know.  But you have posted that you get products from Huma to test when they aren't available to the public.  That sounds like an arrangement to me. 

    Similar to my arrangement with FX-USA.  I've gotten some products for my Crown to evaluate, I won't deny that.  

    As far as regulators, maybe I got lucky.  Three out of four FX rifles I've owned had/ have great regulator performance.  Only my Wildcat had an issue that I chose to remedy with a Huma regulator. 

    But to say FX rifles need to be modified to make them reliable just isn't true.

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    BDX
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    Bob_O

    …Three out of four FX rifles I've owned had/ have great regulator performance.  Only my Wildcat had an issue that I chose to remedy with a Huma regulator. 

    But to say FX rifles need to be modified to make them reliable just isn't true.

    As I posted recently I have not had any creep issues at 150 bar but I have noticed the FX gauges can stick occasionally (which may be the mechanical issue Ernest mentioned previously.) I’m simply leaving those alone for now to see if they wear in and “Seat” better over time. Regardless I’ve never seen the gun behave abnormally with respect to point of aim after the usual couple warm up shots I typically take. 

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    edosan
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    😳😮👊💪😅😉

    Can I have an arrengement with fx, huma and Ernest?  Please?! 😂

    Like Mika says…relax take it easy! 😅

    Btw, never had creep issues on my impacts

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    Michael
    Keymaster
    Keymaster

    Everyone is a valuable member of our community.  Please respect each others opinions & try get a long.

    Thanks -Michael 

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    Spray1Mark
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    I don't see the HUMA as solving anything really, they just introduce a different set of problems with their design.

    Nothing is perfect and certainly nothing as complex and fragile as a PCP airgun.

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    jwrabbit123
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    I have worked for new car dealers as a mechanic on Mercedes Benz and some cars would be broken before they were unloaded , It is part of life things break ,, I really think you

    I have had older reg issues , but no big deal , Everything in life gives us a problem now and then and I agree some things customers ruin by lack of knowledge of how to use it or repair or clean it  or set it properly , and regulators  like good o rings good lube and users not to scratch anything when servicing , I here have saw people destroy regulators by trying to service it and are not mechanically inclined .

    But as far as HUMA I love their regulators

     

    LOU

     

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    CHUCK
    Participant
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    Well Lou whether you realized it or not, your Huma regulator actually loves you back! 😍 It is an integral part of Huub's manufacturing process to have his Fairies pour a large measure of Love into each and every regulator they make. Here is an ice cold frosty mug of beer just for you! 🍺 😂

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    CHUCK
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    I am curious to know if anyone has performed these power modifications to a Crown .22 with a slug liner?

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    redevill
    Participant
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    Hello Chuck,

    New here – but not to airgunning. I have been working on the same modifications spoken about in this thread. New Huma reg, (original was Fx gen 2) with the intent of higher pressure setting (running 150 – 155bar). Also using Earnests hammer mod. I also am using a .22 slug liner.

    Initially, I was trying 160 bar, and there was no fps consistency. 60 fps spread over a number of shots. The reg appeared to be struggling – I need to double check the stacking of the washers. With the hammer dialed up, I was also getting lots of bounce.

    My on going efforts involved "spring gun tune" to the hammer spring, dropping the reg to 150 – 155, and making sure that there is still room for the "sling shot" of the hammer. Now I am getting ES – 18fps with SD – 4.6fps over 40 shots (230 Bar down to reg pressure 150bar) Pellets straight out of the tin – JSB Monster redesigned 25.39 grain at 950 fps average. (I have yet to do accuracy testing with slugs, I wanted to get fps consistency first with cheaper ammo)

    The 10fps jumps really bother me. Many reviews of the crown show similar shot strings. I guess I need to wash and sort by size and weight next? Perhaps someone can suggest something to improve the consistency?

    I'll post groups with the slugs when I get to that point.

    Thanks…

     

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    CHUCK
    Participant
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    With the Huma reg I can tune a Wildcat, Streamline, or Crown to get an extreme spread from 2 ft/s up to 5 ft/s but that is only with pellets I have cleaned with Acetone, weighed and sorted to within 1/10th of a grain of each other, and lubed with Napier. Pellets straight from the can usually have quite a difference in weight…for example: a can of pellets that shows a weight of 33.95 grains on the label will have pellets that actually weigh anywhere from 32.8 grains up to 34.9 grains. So if you put a mix of pellets that have all sorts of different weights in your magazine, you will see all sorts of different numbers when you shoot them over your chronograph. 

    Most people consider cleaning and weighing pellets an extreme exercise in self abuse but I like the kind of accuracy it affords me. 😃 A ten ft/s difference in pellet velocity doesn't mean all that much on a 50 yard target…but to me it is the difference between 8 shots in a hole the size of a pellet versus 8 shots in a hole the size of a dime.

    All the best, Chuck

    • This reply was modified 7 months ago by CHUCK.
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    mtnGhost
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    I don't know how I missed this thread! I own two Crowns now, a 600mm that I bought from @bob_o that has a gen 3 reg and a new 700mm (also gen 3). 

    I'll get some overnight creep sometimes, but it goes away after the first shot. I have seen the pressure jump 2-5bar when I tap on the reg gauge, mainly in the 600mm, but those gauges are the older white ones and I have a new set of black ones waiting for me to prioritize their install.

    Regarding what @sniperlabyo's feedback, I'm really curious about the new reg materials! I bought a new extra-high Huma when I bought this new Crown, but with my 12.6 gram hammer weight and modified spring guide, my ES is usually 3, but never more than 4 shooting 30gr slugs at 970fps at 170bar. Lately, the wind has been calmer here, and I have been running 158-160bar with zero creep and identical ES.i also feel like ES could be lower if I paused longer between shots.

    That said, one time I left my reg at 180bar and it crept to around 190 overnight. That had me wondering about the creep issues that others have posted about, and whether or not the creep is tied to making frequent reg adjustments – or changing the reg pressure settings for a different tune. I started to wonder if my reg would exhibit that behavior if I left my rifle on 158 or 170 for a month's worth of shooting, and then decided to detune it to 135 or whatever.

    All I know is that these gen 3 regs have been pretty good for me. I'm tempted to take my reg out now to see what materials the piston is made from, and to see if mine has these other changes that @sniperlabyo speaks of – but meh, at this point I'm not planning to touch it until it's time for me to service it.

    • This reply was modified 7 months ago by mtnGhost.
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    darkcharisma
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    mtnghost. i am chasing you down for the details of your 70fpe Crown in .22 in another post. would you please shine some light on that?

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    CHUCK
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    Ghost, the reg piston is made of brass, the reg body is made of aluminum

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    redevill
    Participant
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    Hello Chuck,

    Still working on consistency (I was trying with .22 now with a .25), and it has been improving, but not yet to the level you suggest. The chart below shows quite a nice improvement in consistency, when I did 3 things. I opened up the TP and lowered the working pressure down and weighed all the pellets (washing is coming :)) as you suggested. The accuracy at 50 yards is good from what I know – where I can get most shots inside a .5 inch circle. This may useful input for someone.

    A couple of points still have me stymied.

    1. Is it 'normal' for a huma regulator's output pressure to vary by 10%? I run my bottle from 230bar down to about 150bar, it is over this range that I see 10bar difference. This is enough for me to start seeing valve lock at the higher end.
    2. The tests below were captured last Fri, shot a competition on Sunday, and now today, running a couple over the chrony, the velocity has dropped to about 860!? What could possibly cause that?

     

    Would appreciate any input folks might have for me.

    Thanks
     

     

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    CHUCK
    Participant
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    I cannot say what is normal or not normal for your Huma regulator… but I can tell you what is normal for mine. I still have the very first production model of the Huma regulator for Wildcat rifles in my .25 Wildcat original MK1, that I helped Huub develop in the very beginning.

    I have that rifle set to shoot the 34 grain pellets at an average velocity of 895 feet per second, with extreme spread of two or three feet per second normally, with a standard deviation that varies from .86 up to 1.2 feet per second.

    I recently sold my Wildcat 30 and took my old Wildcat 25 out of the closet to take her shooting. After 6 months of sitting in the closet she had not lost one drop of air, and the chronograph readings for the first eight shots were as follows: 895,895,895,897,897,897,897,898. The first shot hit the bullseye dead center!

    I'm telling you all this so that you understand that I can't speak to other people's experience with their rifle and regulator. But mine works flawlessly even after all these years and I've only had to take it apart and clean it once when a piece of lint got in it and partially plugged up the entrance hole.

     

     

     

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    biohazardman
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    edosan

    Usually the creep is due the plastic piston, with a metal piston on the reg, problem solved (in huma is metal). 😉

    +1 on the plastic piston often being the problem mine had a flat spot on the side that caused it to creep and my poi to jump up or down near 4 inches at 100 yards every few hundred rounds.  I made a brass piston but installed a huma already.  I may get around to putting my original back in someday but why fix something that already werqs.
     

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