The Original CZ Forum
CZ PISTOL CLUBS => CZ SP-01 and variants => Topic started by: jero57 on May 07, 2017, 03:03:55 PM
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Hello all,
I am proud owner of brand new TS75 Orange, straight from Uhersky Brod. I own the gun for half a year now, shot ton of rounds and not a single thing wrong with the gun. Really amazing one to shoot, both precise and IPSC !
However, I got mine with trigger pull weight of 700 grams (yes I am from Europe), and since I want to do some competition precision shooting, here in EU, minimum is 1050 grams (so around kilo+). I am very desperate of what to do. Changing trigger spring seems to be the best option, but replace it with which one ? since it is SA trigger, changing main spring will not affect much.
Appreciate comments and suggestions ! :)
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You are saying that you have a 1.54 lb S.A. trigger pull! Let me know where you live. I may have to move!
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well start packing then ;) I have 700 grams straight from CZ shop :)
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Mine breaks at 1.60 lbs. Its completely stock with 800 rds through it.
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yep, thats more or less same as mine...
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I stand corrected after researching competition shooters and shooting.
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Try a heavier trigger return spring. Im not sure what one is in there but I'm sure you can find something lighter. Also a heavier hammer spring should help although the main reason for changing the hammer spring is DA weight it should still help a little.
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http://www.ipscstore.eu/en/tanfoglio/974-tanfoglio-sear-spring-2000000009742.html
This will add a few grams due to higher coils than standard CZ sear spring, not sure how much. I feel it might not be enough for 300 grams of increased weight.
I did something different.
I added approx 1 full pound of trigger weight by using two standard sear springs in place of one.
Before/After/Increase
Lowest point of trigger: 1 lb 4 oz / 2 lb 4 oz / 1 lb increase
Middle of trigger: 1 lb 12 oz /3 lb 6 oz / 1 lb 10 oz increase
This got the trigger to end up perfectly fine for 1000gr weight requirement.
I had to open up the space in the sear to accommodate for the 2nd sear spring. I used services of an edm cutter at a workshop, but can be done with a dremel too at home.
I would suggest you order a spare sear, and a couple of sear springs to work on. I have done this on two TS with similar results.
http://www.ipscstore.eu/en/cz-tactical-sport/504-cz-75-ts-sear-2000000005041.html
I do not think you could use a standard CZ75 trigger return spring, due to different trigger bar in TS vs other CZ75 pistols. If you could somehow, then using that as well as the tanfoglio sear spring might get you above 1000gr, but I cannot say for sure. Double sear spring modification needs some work, but works like a charm.
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I have been exploring this as while I like the sub 2lb pull, I feel the reset is a bit weak.
Unfortunately, I have only found ONE trigger return spring available. The stock OEM CZ spring.
So bending it seems to be the only option. Just seems crazy to me that there is no other option for a competition pistol.
I have heard of the Tanfo sear spring, and the double sear spring mod, but wasn't sure that would do anything to trigger reset.
Wish I could figure out a way to use the CZ75 TRS. I'd happily give up 1/2-1lb in pull weight to get a more positive reset.
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http://www.ipscstore.eu/en/tanfoglio/974-tanfoglio-sear-spring-2000000009742.html
This will add a few grams due to higher coils than standard CZ sear spring, not sure how much. I feel it might not be enough for 300 grams of increased weight.
I did something different.
I added approx 1 full pound of trigger weight by using two standard sear springs in place of one.
Before/After/Increase
Lowest point of trigger: 1 lb 4 oz / 2 lb 4 oz / 1 lb increase
Middle of trigger: 1 lb 12 oz /3 lb 6 oz / 1 lb 10 oz increase
This got the trigger to end up perfectly fine for 1000gr weight requirement.
I had to open up the space in the sear to accommodate for the 2nd sear spring. I used services of an edm cutter at a workshop, but can be done with a dremel too at home.
I would suggest you order a spare sear, and a couple of sear springs to work on. I have done this on two TS with similar results.
http://www.ipscstore.eu/en/cz-tactical-sport/504-cz-75-ts-sear-2000000005041.html
I do not think you could use a standard CZ75 trigger return spring, due to different trigger bar in TS vs other CZ75 pistols. If you could somehow, then using that as well as the tanfoglio sear spring might get you above 1000gr, but I cannot say for sure. Double sear spring modification needs some work, but works like a charm.
Interesting stuff.
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I have been exploring this as while I like the sub 2lb pull, I feel the reset is a bit weak.
Unfortunately, I have only found ONE trigger return spring available. The stock OEM CZ spring.
So bending it seems to be the only option. Just seems crazy to me that there is no other option for a competition pistol.
I have heard of the Tanfo sear spring, and the double sear spring mod, but wasn't sure that would do anything to trigger reset.
Wish I could figure out a way to use the CZ75 TRS. I'd happily give up 1/2-1lb in pull weight to get a more positive reset.
You should look at these springs from Europe. Not sure if they are available in US, but the store can ship.
http://www.ipscstore.eu/en/cz/1956-eemann-tech-extreme-trigger-spring-10-power-for-cz-75-2000000019567.html
Or, just get another CZ TRS, and try bending it to get some extra oomph out of it.
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I have been exploring this as while I like the sub 2lb pull, I feel the reset is a bit weak.
Unfortunately, I have only found ONE trigger return spring available. The stock OEM CZ spring.
So bending it seems to be the only option. Just seems crazy to me that there is no other option for a competition pistol.
I have heard of the Tanfo sear spring, and the double sear spring mod, but wasn't sure that would do anything to trigger reset.
Wish I could figure out a way to use the CZ75 TRS. I'd happily give up 1/2-1lb in pull weight to get a more positive reset.
You should look at these springs from Europe. Not sure if they are available in US, but the store can ship.
http://www.ipscstore.eu/en/cz/1956-eemann-tech-extreme-trigger-spring-10-power-for-cz-75-2000000019567.html
Or, just get another CZ TRS, and try bending it to get some extra oomph out of it.
Thanks! Unfortunately, that is for a CZ75. The TS Orange and TS take the Tactical Sports trigger return spring and it's quite different.
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I am sorry, I didn't notice you had a TS and not a standard cz75 variant.
The standard CZ75 trigger spring uses trigger and frame to fit. I see no reason why it cannot be used..unkess I am missing something.
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Mine breaks at 1 lb 11 oz or so. Never more than 1 lb 13 oz and never less than 1 lb 10 oz. Lyman digital checked.
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I need to increase my pull weight also. I have only shot 200 rounds through my recently acquired TSO and it?s alarmingly light... it?s coming in at 5.6 ounces and I could only bring it up to 10 ounces by adding an extreme amount of pre travel but it?s not true weight it?s just distance.
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I modified my trigger pull by installing the Tanfoglio sear spring and upped the main spring. It increased the pull weight by ~.5 lb, I don't think that will get you enough for a 1kg pull? How do they measure the trigger pull in competition? How are you measuring your trigger pull? Here is my thread that discussed my results:
http://www.czfirearms.us/index.php?topic=86250.msg645137#msg645137
My gun came with a 2.2 lb (1kg) trigger pull. I thought that was too light, I would be performing the double sear spring mod if it came from the factory with a 1.5 lb trigger.
Cheers,
Toby
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Yea mine is ridiculous at .625 lbs or 10 ounces now... and no that's not 1.65lbs lol, its just .65. Originally it was .36lbs or 5.6ounces!
I am going to try the tanfoglio sear spring and hopefully that helps. otherwise im sending it back to the factory for warranty work. The pull weight now is entirely too dangerous even for a seasoned shooter, something isnt right. The double sear thing may help but thats just too much finagling for my liking. In competition they arent measuring the trigger pull at all for us, it's just a matter of what is reasonable for safety and my personal preference. I do prefer triggers in the 1.5-2lb range.
i am using a digital trigger scale and using it with the gun in a vice for an accurate reading.
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^^ Wow, that is way too low, i would send it in for sure. :o
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^^ Wow, that is way too low, i would send it in for sure. :o
The part that really is upsetting is that I contacted CZ and they said ?it?s normal and not anything that i would worry about but if you want to send it in you can?
I?m just shocked at that reply... anyone that has been shooting competition guns for even a short time knows that anything under 1/2 pound or 1lb is borderline unsafe or at the very least not normal.
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King,
Is your sear clearing the hammer hooks, meaning is the overtravel screw adjusted properly? If you pull and hold the trigger and rock the hammer back and forth, does the sear touch the hammer hooks?
https://czcustom.com/knowledge-base/general/how-do-i-adjust-the-over-travel-screw-on-cz-pistols.html
Cheers,
Toby
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King,
Is your sear clearing the hammer hooks, meaning is the overtravel screw adjusted properly? If you pull and hold the trigger and rock the hammer back and forth, does the sear touch the hammer hooks?
https://czcustom.com/knowledge-base/general/how-do-i-adjust-the-over-travel-screw-on-cz-pistols.html
Cheers,
Toby
I just tested what you mentioned holding the trigger and rocking the hammer. I did not see any engagement with the hammer and sear in doing so.
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You may want to inspect the sear to see if it's rounded at all. It should have a sharp edge and not look dull.
How are you testing your trigger pull? In the middle? Averaging the top and bottom of the trigger?
Cheers,
Toby
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