Author Topic: Pro package on SP01 still have 10lb DA  (Read 5072 times)

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Offline delphidoc

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Re: Pro package on SP01 still have 10lb DA
« Reply #30 on: August 25, 2018, 10:18:26 PM »




Glad you found a solution.

I would've guessed it was a problem with your trigger bar spring being trapped between the trigger bar and frame. Looks over-tightened or bent in the picture.
When the knock on the door said “Alcohol, Tobacco, and Firearms,” naturally I thought it was a delivery…

Offline broadside

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Re: Pro package on SP01 still have 10lb DA
« Reply #31 on: August 25, 2018, 10:32:37 PM »
The trigger bar spring has always been in the proper slots. I too am glad I found a solution but unfortunately I don't know the root cause

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Just a SP-01 with Pro Package and soon a Leupold Deltapoint for Carry Optics

Offline Moebravo

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Re: Pro package on SP01 still have 10lb DA
« Reply #32 on: October 07, 2018, 07:44:20 AM »
 I too just performed a pro kit install.

My da pull went from 8.5# to 7.5# with the blue spring. I'm going to try the black spring next.

Has anyone tried adjusting the recoil springs?

I shoot factory 124gr ammo. Is there any benefit of replacing the stock spring?

 I was planning on buying the tuner pack and see what works, but would love some advice before I get started.

Thanks




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Offline Underwhere

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Re: Pro package on SP01 still have 10lb DA
« Reply #33 on: November 26, 2019, 01:34:39 PM »
Could be related to the stock trigger bar and sear cage.  One of our newest gunsmiths ("Big John") made an amazing discovery this month on the DA pull.

If the trigger bar goes rearward just a few thousands to much at the very end of the DA travel, the DA can stack at the end of the pull and really push the weight up in DA. 

Big John also figured out the solution.  We observed one test CZ go from a "stacky" 8lb. 6 oz. DA down to an amazing 6 lbs. 14 oz., with a linear DA using his fix.

I have been thinking about this post: probably once a week while in the shower and probably a few times a week commuting to work. I recognize that seems rather unhealthy. So be it.
Do you have any more details you can share about this? This has been eating away at me.

Offline Arko

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Re: Pro package on SP01 still have 10lb DA
« Reply #34 on: November 27, 2019, 12:34:12 PM »
I don't think it is stacking. The trigger pull gauge just keeps climbing then it breaks without the trigger moving much at all after the initial take up.  I might not be seeing it though.

I am now noticing a lot of wear on the left side of the hammer (race version) and after checking it looks like there is play in the hammer side to side (hammer to main pin is sloppy). With the disconnector pushing only on the right side I can see it eating the slack and twisting the hammer into the left side of the frame. If I slide a thin piece of paper between the hammer and frame on each side, the left piece is tighter as the hammer cycles. The main hammer pin is OEM. Not sure this is 3lb of extra trigger weight though as I can slide the paper out still

The action is smooth and crisp, just not as light as I was hoping on the DA. I need to decide if I have the time to send it to CGW.

Can I ask what the solution is?

Offline broadside

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Re: Pro package on SP01 still have 10lb DA
« Reply #35 on: November 27, 2019, 01:04:49 PM »
I don't think it is stacking. The trigger pull gauge just keeps climbing then it breaks without the trigger moving much at all after the initial take up.  I might not be seeing it though.

I am now noticing a lot of wear on the left side of the hammer (race version) and after checking it looks like there is play in the hammer side to side (hammer to main pin is sloppy). With the disconnector pushing only on the right side I can see it eating the slack and twisting the hammer into the left side of the frame. If I slide a thin piece of paper between the hammer and frame on each side, the left piece is tighter as the hammer cycles. The main hammer pin is OEM. Not sure this is 3lb of extra trigger weight though as I can slide the paper out still

The action is smooth and crisp, just not as light as I was hoping on the DA. I need to decide if I have the time to send it to CGW.

Can I ask what the solution is?
Hammer has been working fine. I changed the main spring to the Cajun black one. DA is good now
Just a SP-01 with Pro Package and soon a Leupold Deltapoint for Carry Optics

Offline roggiedog

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Re: Pro package on SP01 still have 10lb DA
« Reply #36 on: January 10, 2020, 09:14:46 PM »
I wonder what would happen if you put the suspect spring back in. I have a feeling the problem you had would not return again. Just a thought.

Offline Tok36

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Re: Pro package on SP01 still have 10lb DA
« Reply #37 on: January 10, 2020, 10:08:22 PM »
Strange, but I am glad that you got it worked out.
Will work for CZ pics! (including but not limited to all CZ clones)

Offline DJK11

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Re: Pro package on SP01 still have 10lb DA
« Reply #38 on: January 12, 2020, 07:30:33 AM »
I had a similar issue with blue spring in my 97b.  Just cut two coils off problem solved.  Hundreds of rounds no light strikes.

With a cocked hammer the spring would kink so much it would push against the mag brake.  Compared parts with the 75 and couldn’t see a difference. So I just cut away.

 

anything