Trigger question

CraigE · Post by **CraigE** » Sat May 06, 2006 9:27 am

I would appreciate a bit of information: What affects on trigger weight adjustments (if any) occur with a slight increase (quarter turn) in sear engagement?

Thanks for any help. CraigE

Sandy · Post by **Sandy** » Sat May 06, 2006 10:53 am

You must specify the pistol/trigger that you are trying to adjust. There are even differences with different models (single stage vs two stage) triggers of the same make pistol.
Sandy

F. Paul in Denver · Post by **F. Paul in Denver** » Sat May 06, 2006 12:07 pm

Even with that information, all anyone could do is speculate. Best way to determine what effect if any such an adjustment would have is to buy a set of high quality trigger weights and see for yourself.

F. Paul in Denver

CraigE · Post by **CraigE** » Sat May 06, 2006 2:56 pm

Pistol in question is a Pardini K2s. Have increased the sear (screw "CA") per instructions to turn 1/4 turn CCW. This being done, trigger seems just a tiny bit "stiffer" and I was already at about 510 gm. The impetus for this adjustment was sudden firing on close of breach cover. All else is fine.
Thanks for the help. I had no idea if there were specific things to expect or not.

CraigE

Guest · Post by **Guest** » Sat May 06, 2006 4:00 pm

Check the screws you are adjusting on this page
http://www.pilkguns.com/tenp/sppk2.htm
Some (all?) manuals have a couple mislabeled.

scerir · Post by **scerir** » Sun May 07, 2006 12:57 pm

CraigE wrote:Pistol in question is a Pardini K2s. Have increased the sear (screw "CA") per instructions to turn 1/4 turn CCW. This being done, trigger seems just a tiny bit "stiffer" ....

Look. For that CA screw 1/4 turn CCW is too much. I do not remember what those instructions say, but 1/4 turn is too much, for sure. They (at Pardini) turn that screw about 1/5 turn CCW, if I remember well, or perhaps even less.
When the trigger becomes a bit 'roll' or a bit 'smooth' it means that you have turned that screw too much CCW.
The feeling must be 'crisp', 'clean', 'dry', and not 'roll' or 'smooth'. The trigger was designed, by Pardini and Di Donna, to be 'crisp' and 'clean' and 'dry'.
But there is another problem. The second stage weight - screw PA - adjustment is very limited: usually you can set the second stage weight only between 100 gr. and 170 gr. It is safe to set the second stage weight at (circa) 150 gr. Only *then* it is safe to fix (fine tuning) the other CA screw. But Pardini can provide a different, harder, spring for the second stage weight. Actually Di Donna uses this other spring, and not the original. Italian top shooters usually set the first stage weight at 390/400 gr. and the second stage weight at 120/130 gr.. Do not use the trigger stop, because the Pardini does not have collapse at all.

Steve Swartz · Post by **Steve Swartz** » Sun May 07, 2006 2:33 pm

Just curious- how does " . . . the Pardini does not have collapse at all . . . "?

Does it not require any force at all (0 grams) to move the sear against the spur?

Steve Swartz

Fred · Post by **Fred** » Sun May 07, 2006 6:46 pm

Uh oh...Scerir has been busted by the anti-mechanical-trigger police.

Steve Swartz · Post by **Steve Swartz** » Sun May 07, 2006 7:45 pm

As you well know, Fred, I am definitely PRO mechanical trigger (for everyone else). I will gladly take all the advantages I can get . . . =8^)

Steve Swartz

BJ · Post by BJ » Sun May 07, 2006 11:59 pm

scerir wrote:
CraigE wrote:Pistol in question is a Pardini K2s. Have increased the sear (screw "CA") per instructions to turn 1/4 turn CCW. This being done, trigger seems just a tiny bit "stiffer" ....
Look. For that CA screw 1/4 turn CCW is too much. I do not remember what those instructions say, but 1/4 turn is too much, for sure. They (at Pardini) turn that screw about 1/5 turn CCW, if I remember well, or perhaps even less.

There ain't much difference between 1/4 and 1/5!!

David Levene · Post by **David Levene** » Mon May 08, 2006 12:54 am

BJ wrote:There ain't much difference between 1/4 and 1/5!!

There is if you are adjusting triggers "by numbers" rather than understanding what you are doing.

scerir · Post by **scerir** » Mon May 08, 2006 1:35 am

Steve Swartz wrote:Just curious- how does " . . . the Pardini does not have collapse at all . . . "? Does it not require any force at all (0 grams) to move the sear against the spur? Steve Swartz

Well, there is no difference between the 162El and the K2. The trigger tongue remains *there* (no overtravel at all) when the shot breaks. This is what I meant when I said 'no collapse'. Of course the feeling is different with the 162-El, but even here you can feel something (try to pull the trigger when the power is *off*, you'll feel yourself forcing the spring of that little switch ...). Regards, s.

BJ · Post by BJ » Mon May 08, 2006 4:17 am

David Levene wrote:
BJ wrote:There ain't much difference between 1/4 and 1/5!!
There is if you are adjusting triggers "by numbers" rather than understanding what you are doing.

I agree that when working on an individual trigger, this is quite an amount.
But to give a blanket 1/4 to much, 1/5 correct amount statement for all in any product line will prove to be an average (not to accurately described) and not necessarily correct for the individual trigger.
Also when looking at the end of a screwdriver handle, fairly hard to judge.

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