The Original CZ Forum
CZ PISTOL CLUBS => CZ SP-01 and variants => Topic started by: mrt on October 02, 2022, 02:46:02 PM
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Is it possible to increase the trigger pull on the S2 SA, how is that done?
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That's a switch. Most folks are looking to reduce trigger pull. What are the circumstances that have you research greater trigger pull?
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Here in Sweden we shoot something called "Nationellt Fältskytte" https://www.youtube.com/watch?v=WbTLGfrfIZg&t=28s&ab_channel=OzwaldA
The trigger pull must be at least 2.9983 Pounds otherwise you cant participate, its a kind of safety rule and its used for semi automatic pistols in 9mm to 45 ACP calibers and DA revolver .32 to .38 cal.
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This should do the trick:
https://czcustom.com/cz-parts-all/cz-springs-all/cz-75-trigger-return-spring-heavy.html
Or... you can also try adding a heavier hammer spring, which may help somewhat but affects DA much more than SA. I would suggest removing the trigger return spring and spreading it open a little. That will increase pull weight as well.
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Thank you!
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The other thing to try if you only need a little increase in trigger pull weight is to swap the CZ sear spring with the Tangfolio sear spring. It is about .22lbs heavier on my Tactical Sport Orange. Chronicled here: https://czfirearms.us/index.php?topic=86250.msg645137#msg645137
I'm not sure how much heavier the CZ Custom spring is but I think it is significantly heavier and may be too much depending on your needs.
Cheers,
Toby
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I installed stronger 0.8 mm searspring (link below) in my TS2 and it increased my trigger to around 2.4 pounds. You can see the sear spring is much thicker and stronger.
https://www.cz-parts.com/cz-shadow-2-cz-ts-2-cz-75b-sp-01-sear-spring
To get it to 3 pounds I think only option is opening up the sear to be able to install two sear spring, e.g standard plus 0.75 mm. I tried with 0.8 mm + standard sear spring and it got my trigger to approx. 3.7 pounds.
To make space in the sear for second spring, it’s either gunsmith or Dremel tool.
(https://i.ibb.co/2qgQtMf/BCA23-F3-E-02-F7-4-B26-B96-A-BF13-BDB842-FF.jpg) (https://ibb.co/2qgQtMf) (https://i.ibb.co/Dz6G94f/2-D2-F8164-ECB3-4869-A427-5617829-D99-E4.jpg) (https://ibb.co/Dz6G94f)
The picture above is with two standard TS sear springs and it got my trigger to 2.2 pounds. Later I received 0.8 mm sear spring mentioned earlier and combining it with standard TS spring it got me to 3.7 pounds which was way too much for me. It’s when I realized 0.8 mm version adds quite some weight so I tried it solo and it got me to 2.4 pounds which is perfect for me.
I strongly recommend you also buy new sear and keep the original for backup.
P.S. I also tried Tangfolio spring which did close to nothing for me, adding less then 2 oz.
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Thanks for the link, I've never seen different sear spring weights before only trigger return springs for the standard 75 variants. Can you comment on how much the 0.8mm sear spring alone increased the pull over stock? You indicate that the 0.8mm sear spring resulted in a 2.4lb pull but don't state what you started at stock?
Cheers,
Toby
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Hi. CZ TS2 has a stock trigger pull weight at average 35.6 oz/727 g. I’m from Europe, so hope I’m doing the conversion right, google conversion doesn’t correspond to official data actually.
Measured in metrics I started with ~730 g and ended with ~1.1 kg (2.4 lbs?), so it added around 400g.
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I also must add I’m using improvised luggage scale to measure, so it’s not precise but should be close enough.
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Thanks for the data. That is a significant increase and worth investigating further!
So you started at ~1.6lb and just swapping to the 0.8mm sear spring ended at ~2.4lb. That is a ~0.8lb increase. This is with everything else stock in the action (hammer, main spring, etc...)?
Cheers,
Toby
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Yes. I haven’t changed anything else. And as said, spring is notably thicker and stronger. I’m sorry I haven’t made any comparison photo before installation, with a standard spring.
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Here is the comparison, left to right CZ TS2 stock sear spring (thickness measured at 0.62 mm), Tangfolio sear spring (0.65 mm) and Zendl 0.8 mm sear spring from CZ Parts.
As you can see Tangfolio sear spring is almost identical to TS2, but due to slightly different design provides “earlier” tension. Zendl sear spring is, due to its thickness, notably stronger compared to both. (https://uploads.tapatalk-cdn.com/20221008/dac63ad6e6db9b3f2b2f3fc4a5d88cc9.jpg)
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Thanks for the comparison. I tried to order from zendl but being stateside and there website not in English, they haven't responded to my email asking how to pay.
I'm hoping I can get them to ship to America.
Cheers,
Toby
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Thanks for the comparison. I tried to order from zendl but being stateside and there website not in English, they haven't responded to my email asking how to pay.
I'm hoping I can get them to ship to America.
Cheers,
Toby
Sent from my SM-G950U using Tapatalk
Any particular reason to go directly to producer? CZ Parts ships worldwide.
Sent from my iPhone using Tapatalk
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Thanks for the comparison. I tried to order from zendl but being stateside and there website not in English, they haven't responded to my email asking how to pay.
I'm hoping I can get them to ship to America.
Cheers,
Toby
Sent from my SM-G950U using Tapatalk
Any particular reason to go directly to producer? CZ Parts ships worldwide.
Sent from my iPhone using Tapatalk
Let me know if you need a forwarder.
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Strictly due to price, the cz parts cost is nearly 4x what zendl charges.
Cheers,
Toby
Sent from my SM-G950U using Tapatalk
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Thanks for the comparison. I tried to order from zendl but being stateside and there website not in English, they haven't responded to my email asking how to pay.
I'm hoping I can get them to ship to America.
Cheers,
Toby
Sent from my SM-G950U using Tapatalk
Toby,
Did you ever order the Zendl springs? What size did you get and how much weight did it add. Im curious how much the other two variations would add.
Thanks
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Eemann tech +10% power trigger return spring (also good for making the reset more forceful)
20lb or more main spring (the shadow 2 uses like a 14ish lb which is significantly lighter than the 20lb cz75 stock weight)
aforementioned heavier sear spring.
a more curved trigger. Since trigger pull weight is usually measured from the "bow" of the trigger. Ultimately you are pulling a lever (about the trigger pin) so a certain amount of torque (lb*inches) is actually what activates the trigger and the closer up the trigger you can get the pull gauge to measure from (less inches) the more pounds it will measure. flat triggers will read fewer pounds since the pull gauge pulls at the bottom of the trigger.
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Toby,
Did you ever order the Zendl springs? What size did you get and how much weight did it add. Im curious how much the other two variations would add.
Thanks
I placed an order but they never responded to my email on how to pay for the parts. The website wasn't in English and the web translator didn't help much. I didn't try calling.
Cheers,
Toby
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I placed an order but they never responded to my email on how to pay for the parts. The website wasn't in English and the web translator didn't help much. I didn't try calling.
Cheers,
Toby
Hey so I have the CGW Hammer and Adjustable sear in my TS2, I feel a well defined wall and extremely crisp break with no creep. However my reset isn't very tactile. Don't get me wrong I feel lit but its just not a super tactile click. Is this just the way it is on these pistols?
My adjustment screws are set perfectly for over travel and pre-travel so no issues there. My break is 1lb 4oz. It sounds like the tangfolio sear spring will increase this to about 1.5lb if I added it.
I don't really mind trigger as is pull weight wise, but will the tangfolio sear spring improve my reset at all? Did it do anything for your reset when you installed it?
My gun only has about 175 rounds through it, so I can't imagine my Trigger Return Spring is worn as the gun is brand new.
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The TS2 doesn't have a trigger bar spring. The trigger return spring is the only spring that provides upward tension to the trigger bar. This is what provides the reset. A heavier trigger return spring will have a more positive reset.
The sear spring will not do anything for your reset. It is not part of that process in the action.
Make sure you haven't set the pre travel trigger set screw too tight. If set too tight it may affect the reset. There is little benefit to having the set screws as tight as possible and it could prevent reset as things warmup or get dirty.
Make sure the trigger bar isn't binding in the frame or action anywhere.
Cheers,
Toby
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The TS2 doesn't have a trigger bar spring. The trigger return spring is the only spring that provides upward tension to the trigger bar. This is what provides the reset. A heavier trigger return spring will have a more positive reset.
The sear spring will not do anything for your reset. It is not part of that process in the action.
Make sure you haven't set the pre travel trigger set screw too tight. If set too tight it may affect the reset. There is little benefit to having the set screws as tight as possible and it could prevent reset as things warmup or get dirty.
Cheers,
Toby
Make sure the trigger bar isn't binding in the frame or action anywhere.
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It was set by CGW and loc-tired, it reduced pre-travel there is still some there for the purposes you mention. So I think that’s all good.
No one makes a heavier trigger return spring for the TS2 models do they? I know there is the mod with adding the shadow return spring as well but I don’t feel like doubling up springs like that.
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It was set by CGW and loc-tired, it reduced pre-travel there is still some there for the purposes you mention. So I think that’s all good.
No one makes a heavier trigger return spring for the TS2 models do they? I know there is the mod with adding the shadow return spring as well but I don’t feel like doubling up springs like that.
Eeman makes one for the shadow 2 but its a different spring. I tried a ts2 before settling on a s2-sa in part because the ts2 trigger was insanely light. they have done everything to make it a hair trigger (hence the redesign). you cant really get a positive forceful reset in a 1 lb hair trigger. I like 2-3lb triggers for this and other reasons (slighty heavier triggers mask the ever so slight creep)
my s2-sa with eeman+10% trs and a 20lb mainspring (stock is 14lb) has a ~2.5-3lb break and crisp tactile reset. (that 20lb spring side effect: sets off all 22lr in my Kadet). the goal was to get it to feel like my Geisselle trigger
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I installed stronger 0.8 mm searspring (link below) in my TS2 and it increased my trigger to around 2.4 pounds. You can see the sear spring is much thicker and stronger.
https://www.cz-parts.com/cz-shadow-2-cz-ts-2-cz-75b-sp-01-sear-spring
To get it to 3 pounds I think only option is opening up the sear to be able to install two sear spring, e.g standard plus 0.75 mm. I tried with 0.8 mm + standard sear spring and it got my trigger to approx. 3.7 pounds.
To make space in the sear for second spring, it’s either gunsmith or Dremel tool.
(https://i.ibb.co/2qgQtMf/BCA23-F3-E-02-F7-4-B26-B96-A-BF13-BDB842-FF.jpg) (https://ibb.co/2qgQtMf) (https://i.ibb.co/Dz6G94f/2-D2-F8164-ECB3-4869-A427-5617829-D99-E4.jpg) (https://ibb.co/Dz6G94f)
They do ship to the U.S.?
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Yes