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CZ PISTOL CLUBS => CZ SP-01 and variants => Topic started by: schmeky on February 16, 2014, 09:32:32 PM

Title: 4lb. 3oz. DA - SP-01
Post by: schmeky on February 16, 2014, 09:32:32 PM
Love how so many folks believe only a Shadow can have a great trigger pull.  Here's an SP-01, with the firing pin block intact, with an ice crisp 2lb. 12 oz. SA, and a very functional 4lb. 3 oz. DA.  This pistol has plenty of ignition for setting off Federal primers. 

We set this one up with a milled in LPA-TRT fully adjustable rear sight and a full action job. 

(http://i81.photobucket.com/albums/j235/schmeky/SP-01003.jpg)
Title: Re: 4lb. 3oz. DA - SP-01
Post by: Stuart on February 16, 2014, 10:26:34 PM
Nice work Dave. Awesome trigger work.

Now we just need to convince people when they ask for these awesome triggers, they need to feed it good ammo too.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: 1SOW on February 16, 2014, 10:26:58 PM
That sir,  is impressive.  My 75 Shadow's DA isn't even real close to that.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: Stuart on February 16, 2014, 10:31:43 PM
That sir,  is impressive.  My 75 Shadow's DA isn't even real close to that.

Mainspring weight and TRS are pretty key to the DA stroke. Getting that light though, primers and reloading gets to be pretty key too.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: harkamus on February 16, 2014, 10:33:44 PM
I wonder how light a trigger can be while still igniting any and all primers. I pose this scenario for SP-01s and Shadows.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: schmeky on February 16, 2014, 10:57:24 PM
Stuart is correct.  I hope I was clear is this is a Federal Primer only pistol.  Crazy to have a DA as light as the SA on some semi-autos.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: Stuart on February 16, 2014, 11:43:05 PM
  Crazy to have a DA as light as the SA on some semi-autos.

crazy indeed.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: harkamus on February 16, 2014, 11:49:36 PM
Lightest SP-01 and lightest Shadow pull weights that reliably ignite all primers? Sounds like a challenge!  ;D
Title: Re: 4lb. 3oz. DA - SP-01
Post by: 1SOW on February 17, 2014, 01:05:21 AM
Lightest SP-01 and lightest Shadow pull weights that reliably ignite all primers? Sounds like a challenge!  ;D

Lightest "DA" pull weights that will reliably fire "ALL"..........
Title: Re: 4lb. 3oz. DA - SP-01
Post by: coolbox on February 17, 2014, 05:10:27 AM
This is awesome!
Title: Re: 4lb. 3oz. DA - SP-01
Post by: Birds Away on February 17, 2014, 07:07:52 AM
That is absolutely incredible.  The lowest we have been able to get with an 11.5# mainspring is still in the high fives on the 75B.  But I am fine with that as it is soooooo smoooooooth.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: kalelinslo on February 18, 2014, 12:50:47 PM
I would love to shoot this gun :)
Title: Re: 4lb. 3oz. DA - SP-01
Post by: jjdurso on February 18, 2014, 04:59:12 PM
Awesome!
Title: Re: 4lb. 3oz. DA - SP-01
Post by: RaylanGivens on February 19, 2014, 02:51:51 AM
Love how so many folks believe only a Shadow can have a great trigger pull.  Here's an SP-01, with the firing pin block intact, with an ice crisp 2lb. 12 oz. SA, and a very functional 4lb. 3 oz. DA.  This pistol has plenty of ignition for setting off Federal primers. 

Would you mind sharing your spring combination?

I have a CZ 75 SP-01 that I am working to improve...  Would like to reduce the DA/SA trigger pull...  I use Federal primers...
Title: Re: 4lb. 3oz. DA - SP-01
Post by: 1SOW on February 19, 2014, 05:46:44 PM
I would suspect the 8.5# H.S., maybe sear spring, FP spring,  and reduced weight T.S.  + lots of careful polishing/smoothing.
Title: Re: 4lb. 3oz. DA - SP-01
Post by: RaylanGivens on February 20, 2014, 08:07:17 PM
I would suspect the 8.5# H.S., maybe sear spring, FP spring,  and reduced weight T.S.  + lots of careful polishing/smoothing.

Interesting...  I come from the Glock world, so I'm still learning about the spring relationships in CZ 75 SP-01 pistols.  8.5# Hammer spring sounds awfully light to me... 

I bought a CZ 75 SP-01 Shadow from Automatic Accuracy (Matthew Mink).  It has a 13# hammer spring, 11# recoil spring, and reduced power firing pin spring...  Not sure what trigger return spring it has...  It is the best USPSA Production Division gun I have ever shot.

Recently purchased a CZ 75 SP-01 in completely stock form.  My plan is to turn it into a backup gun for my Shadow, but do all the work myself.