FX Crown Mk2 Hammer Damage question

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EPG

EPG

Member
Dec 12, 2020
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Connecticut, United States
Raining all day so dissembling one of my Crowns to tune trigger further.

Is this type of damage typical on Crown hammer in locations where sear catches?

I’m just shooting pellets at modest velocities. I’m not using what would be considered a lot of hammer spring preload.

If typical, disappointing and will make maintaining over time a consistent sear release a challenge.

Thanks,

-Ed

IMG_0773.jpeg


IMG_0772.jpeg
 
Thanks for the pic. I agree the amount of sear overlap looks similar to how far the indentations extend from the edge of the hammer.

Both the sear and the hammer should be hardened, in which case we would reasonably expect them to wear at roughly similar rates. The sear pictured does not appear worn so my assumption is the hammer is not hardened.
 
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nervoustrig said:
Thanks for the pic. I agree the amount of sear overlap looks similar to how far the indentations extend from the edge of the hammer.

Both the sear and the hammer should be hardened, in which case we would reasonably expect them to wear at roughly similar rates. The sear pictured does not appear worn so my assumption is the hammer is not hardened.
Click to expand...

I’d agree. The hammer material doesn’t appear to be as hard as the sear material.

I thought the previous owner may have cranked up HS preload - perhaps shooting slugs.

However, I took pictures last time I disassembled and definitely some new marks from my time owning (past 5 months).

In any case I carefully filed to remove indents and polished everything: hammer, sear, spring, spring guide, pins, holes for pins, etc, lol.

It should be as good as it can be until hammer starts “wearing” again. I guess FX views hammers as a “wear & tear” item…

One point of interest is that I completely eliminated the trigger spring on the seesaw FX trigger a few months ago. I have not had a single failed attempt to cock the rifle shooting from a bench. I’m not saying it will cock perfectly without the spring from any position, but with the rifle flat it engages the sear every time - might be of interest to benchrest shooters.

-Ed
 
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nomojo65 said:
Do you cock the hammer really fast and forcefully to get that next shot on before a condition change? This may contribute to this, but agree that the hammer should be hardened and shouldn’t show this kind of damage?
Click to expand...

The opposite actually… cock slowly and gradually - to not move/disturb the rifle much - with an objective of minimizing amount of movement and any stiction to acquire next target.

Is there a newer hammer design for Crown Mk2 that uses weights for the spring guide?

If yes, what replacement parts are required?
 
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My MKI did that years ago. I pulled it out cleaned it up on my lathe and it's been good ever since. It seems like I came to the conclusion that it wasn't the engagement but the bounce back against the sear that was causing it. Been a while back so I can't recall the details of why I thought this. It's been brought up before on the forum too.
 
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I got damage like that on mine when I added weight, never did figure out what it was but ordered another factory oem one, removed the weight and haven’t had a problem since. I’ll see if I can dig up the thread I posted it in. Not much help I know.

Post #9

Tuning - FX Crown power slug upgrade kit install question.....answered.

Has anyone installed the FX crown power/slug kit? I ordered the crown power/slug kit and I have a question for those who have installed it: the kit comes with the 13 gram additional hammer weight which seems excessive, the original hammer is 16 grams so this almost double the hammer weight...
www.airgunnation.com www.airgunnation.com
 
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