EARNEST'S CROWN HAMMER MOD

Forums PCP Airguns EARNEST'S CROWN HAMMER MOD

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    2D1C
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    This is pretty interesting. Thought you guys would enjoy this.

     

    Dennis

     

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    markT
    Participant
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    What about that? And expert,  Earnest called a "set screw" a set screw.. 

    Most impressed!!! 

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    Greisdor
    Participant
    Member

    Is there more to the video like part 1 ?  

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    wimpy101
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    950 f/s with the .30 44grain… 

    I didn't know the FX's were capable of doing that…

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    BeemanR7
    Participant
    Member

    That's 89.7 FPE! That's more like the power I need. With a high ballistic coefficient slug of similar weight and speed (44.75gr/950FPS), assuming that accuracy is not compromised, the Crown modified this way might be a viable and more accurate replacement for my hotrod Condor for taking coyote and deer. I'm getting the job well done with my .25 Condor (90-100 FPE). Do I really need magazine feed (for quick follow-up shots) as opposed to single loading the Condor, when all I really need is one shot if I'm patient and pick my shot? Still debating! Wonder if similar performance (FPE) can be achieved with an Impact similarly modified to produce 90ish FPE? I'd rather have a bullpup to replace my Condor, that is, if I ever replace it.  Decisions…..Decisions!

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    DreamSmoker
    Participant
    Member

    Well I recieved version 3 from Earnest today..

    FX Crown Power Kit

    Custom Item Number 19902, 19215

    This mod will a solutely make a difference in shortening locktime.

    To take advantage of max power settings. You will need to modify

    Your regulator as described in another post here..

    I am shooting 25cal jsb mk2s at 930fps..

    Ignoring the regulator max of 150bar.

    Just keep in mind your shot count per fill will be effected..

     

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    heavy-impact
    Participant
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    BeemanR7

    That's 89.7 FPE! That's more like the power I need. With a high ballistic coefficient slug of similar weight and speed (44.75gr/950FPS), assuming that accuracy is not compromised, the Crown modified this way might be a viable and more accurate replacement for my hotrod Condor for taking coyote and deer. I'm getting the job well done with my .25 Condor (90-100 FPE). Do I really need magazine feed (for quick follow-up shots) as opposed to single loading the Condor, when all I really need is one shot if I'm patient and pick my shot? Still debating! Wonder if similar performance (FPE) can be achieved with an Impact similarly modified to produce 90ish FPE? I'd rather have a bullpup to replace my Condor, that is, if I ever replace it.  Decisions…..Decisions!

    I added a 3.25 gram hammer weight to my .30 impact 700mm and get a little over 960fps with 44.75g pellets at 160 bar (92 ft/lb) and 925 fps with a 51.2g cast hollow point (97 ft/lb). The lead weight added about 6.3mm of preload to the hammer spring.

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    DreamSmoker
    Participant
    Member

    I am getting a few pms since I posted my recent data on this mod now available in version 3 at Fx usa..

    Today I am now pushing those mk2s 940>950fps.. my reg still fine.. Remember?

     I ignore the reg gauge and pay attention to fps.. The Regulator is now a real power ajuster and now allows the shooter to totally utilized the full power the Crown has.. Your Locktime is much shorter as well..

    My Crown 25cal today shoots like a silenced 22 Rimfire with astound accuracy shot after shot.. So far anyway..lol

    Any questions?

    Call Fx and talk to Earnest.. He is the MAN

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    2D1C
    Participant
    Member

    I don't have my .25 Crown shooting over 910 FPS with the 34 grain ammo. Last night I was trying to get the 24 grain ammo under 900 FPS and was not successful, however there are so many combinations I haven't went thru yet. Are you guys getting good accuracy with the 24.39's at 900FPS?

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