Author Topic: Hammer Spring Question from a Newbie  (Read 1011 times)

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Offline Alcoy

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Hammer Spring Question from a Newbie
« on: December 29, 2017, 01:11:53 AM »
I got a new SP-01 from Santa.

What is the lowest weight of hammer spring I could use without changing the FP, FP spring, FP block, and FP block spring and still maintain proper ignition?

Thanks in advance!

Gil

Offline speedseeker

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Re: Hammer Spring Question from a Newbie
« Reply #1 on: December 29, 2017, 07:00:34 AM »
I got a new SP-01 from Santa.

What is the lowest weight of hammer spring I could use without changing the FP, FP spring, FP block, and FP block spring and still maintain proper ignition?

Thanks in advance!

Gil
I believe that’s a Cajun Gun Works 13 pound Spring. Worth giving them a call to confirm.



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Offline Alcoy

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Re: Hammer Spring Question from a Newbie
« Reply #2 on: December 29, 2017, 07:09:57 AM »
Thanks for the answer SpeedSeeker.  I thought you need the longer FP and lower springs with the 13 # HS to guarantee ignition.

I will call CGW per your advice.

Thanks again.

The Guardian

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Re: Hammer Spring Question from a Newbie
« Reply #3 on: December 29, 2017, 11:00:57 AM »
16# w/o changing anything.......15# if you chg the firing pin spring to a lighter one......13# and under if you chg to an extended firing pin and lighter firing pin spring  ;)

Offline lewmed

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Re: Hammer Spring Question from a Newbie
« Reply #4 on: December 29, 2017, 12:40:14 PM »
No 2 guns are the same mine runs fine with a 15 lb. spring

Offline Alcoy

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Re: Hammer Spring Question from a Newbie
« Reply #5 on: December 29, 2017, 01:04:34 PM »
The Guardian, lewmed,  thanks for the answers.

I have the tuners kit on order (16, 17, 18, 19).  In will start at 16#, then work my way up until I.get proper ignition.

Thanks again.

Offline Tyerone

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Re: Hammer Spring Question from a Newbie
« Reply #6 on: December 29, 2017, 05:18:25 PM »
https://cajungunworks.com/product/spgk1-3-piece-spring-kit-2/

. . . is what I have used reliably for SD purposes (PCR) as well as full size Matte Stainless without changing the firing pin.  I have tried it with a variety of ammunition SD and practice/plinking rounds as well.  No failures what so ever.  While you are at it, get some firing pin retaining pins to replace the factory roll pin that you drive out.

Offline Alcoy

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Re: Hammer Spring Question from a Newbie
« Reply #7 on: December 30, 2017, 08:28:52 AM »
Thanks Tyerone!

Online M1A4ME

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Re: Hammer Spring Question from a Newbie
« Reply #8 on: December 31, 2017, 07:59:14 PM »
Primers can affect what works/doesn't work.

Most folks say Federal brand primers will light up with light springs that won't reliably fire CCI, Winchester and some other brands of primers.

You could get lucky, and have no issues what so ever.  Or you may find that in order to get 100% reliability with the lighter springs, you'll need to stick to Federal primers.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline Scarlett Pistol

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Re: Hammer Spring Question from a Newbie
« Reply #9 on: December 31, 2017, 11:40:01 PM »
The Guardian, lewmed,  thanks for the answers.

I have the tuners kit on order (16, 17, 18, 19).  In will start at 16#, then work my way up until I.get proper ignition.

Thanks again.

If you got this it is recoil springs rather than hammer springs....

https://cajungunworks.com/product/tuners-pac-music-wire-recoil-springs/
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Offline 1SOW

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Re: Hammer Spring Question from a Newbie
« Reply #10 on: December 31, 2017, 11:51:53 PM »
Why no extended FP ?
With USA ammo/primers, 15# spring is reputed to be reliable.  CCI is the hardest USA primer cup to ignite. Win, R&P, & Fed should all go bang.
With Russian primers, a Ballpeen and center punch will work. :o  [Just kidding...mostly O0]

Offline Alcoy

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Re: Hammer Spring Question from a Newbie
« Reply #11 on: January 01, 2018, 05:01:55 PM »
Primers can affect what works/doesn't work.

Most folks say Federal brand primers will light up with light springs that won't reliably fire CCI, Winchester and some other brands of primers.

You could get lucky, and have no issues what so ever.  Or you may find that in order to get 100% reliability with the lighter springs, you'll need to stick to Federal primers.

Thanks M1A4ME!

Offline Alcoy

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Re: Hammer Spring Question from a Newbie
« Reply #12 on: January 01, 2018, 05:05:15 PM »
The Guardian, lewmed,  thanks for the answers.

I have the tuners kit on order (16, 17, 18, 19).  In will start at 16#, then work my way up until I.get proper ignition.

Thanks again.

If you got this it is recoil springs rather than hammer springs....

https://cajungunworks.com/product/tuners-pac-music-wire-recoil-springs/

Scarlett Pistol,

I ordered the kit from Wolff Gunsprings.  It has the 16lb. now.  The double action is much lighter now.  I still need to take it to the range.

Thanks for your advice.

Offline Alcoy

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Re: Hammer Spring Question from a Newbie
« Reply #13 on: January 01, 2018, 05:11:29 PM »
Why no extended FP ?
With USA ammo/primers, 15# spring is reputed to be reliable.  CCI is the hardest USA primer cup to ignite. Win, R&P, & Fed should all go bang.
With Russian primers, a Ballpeen and center punch will work. :o  [Just kidding...mostly O0]

1SOW,

I am not too adventurous yet with CZ.   I am more comfortable with blocks.  I am watching a lot of videos on CZ gunsmithing and might find neough courage to change the FP.

Thanks for your input.

Offline Scarlett Pistol

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Re: Hammer Spring Question from a Newbie
« Reply #14 on: January 01, 2018, 05:26:52 PM »
The Guardian, lewmed,  thanks for the answers.

I have the tuners kit on order (16, 17, 18, 19).  In will start at 16#, then work my way up until I.get proper ignition.

Thanks again.

If you got this it is recoil springs rather than hammer springs....

https://cajungunworks.com/product/tuners-pac-music-wire-recoil-springs/

Scarlett Pistol,

I ordered the kit from Wolff Gunsprings.  It has the 16lb. now.  The double action is much lighter now.  I still need to take it to the range.

Thanks for your advice.
Oh good to hear! BTW as you progress in working on your pistol or wanting to do a little more this thread might help.

http://www.czfirearms.us/index.php?topic=83591.0

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