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P89 Trigger...

This is a discussion on P89 Trigger... within the Gunsmithing forums, part of the Firearm Forum category; I love my P89, but the trigger is a little on the stiff side, with to much creep. Any one here done or had a ...


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Old September 20th, 2007, 02:15 PM   #1
 
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P89 Trigger...

I love my P89, but the trigger is a little on the stiff side, with to much creep. Any one here done or had a trigger job done on a P89? Significant improvements? Wondering if anyone had any pointers for fixing this myself with springs, etc.

Thanks, any info would be helpful...

-John



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Old September 20th, 2007, 07:57 PM   #2
 
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I dry-fired mine over 3K times, which helped smooth it some. Still was creepy and hard pulling on DA. When I shot it, all that didn't seem to matter. I don't mind creep on a carry/field piece, as it gives you a little adrenaline cushion.
Trigger jobs usually improve the attorney mandated heavy triggers we put up with. I've not done/had done/was done on any P89's I have owned. I too am interested in hearing about useful mods to the action to lighten it up. Especially if they are user applied.
If your trying to make a target pistol, I would buy something else. The P89's designed to go bang every time, with most ammo, under most conditions, with reasonable accuracy. Reasonable meaning, center of mass at social distances, repeatably. That seems to be the design criteria for any of the Ruger semi-auto products I've shot/owned (10/22,Mini-14,P-Series pistols). All of then have had creepy, heavy triggers but were still fun to shoot.
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Old September 20th, 2007, 08:14 PM   #3
 
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Look at http://www.gunsprings.com/ - Ruger section, P-series hammer springs.
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Old September 21st, 2007, 12:30 AM   #4
 
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Would I want reduced powed on a hammer spring to lighten trigger pull? If so which weight would be recomended. Thanks for info...
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Old September 21st, 2007, 12:40 AM   #5
 
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Look Here...

As for hammer springs, I run a 19# in my P95DPR and a 20# in my P345PR... Great DA triggers now... Best upgrade for the P-Series
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Old September 21st, 2007, 12:53 AM   #6
 
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Thanks, thats exactly the info I needed. I think I'll have those springs on order today. This is by far and away the most helpful bunch of people I have ever run across. It's like going into a old time hardware store...but with guns.

thanks again
-John
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Old September 21st, 2007, 04:59 AM   #7
 
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I went with a 19 lbs hammer spring and polished my sear. The creep has subsided and the double action is now excellent.
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Old September 24th, 2007, 08:04 AM   #8
 
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Quote:
quote:Originally posted by Johngoboom

Would I want reduced powed on a hammer spring to lighten trigger pull? If so which weight would be recomended. Thanks for info...
A reduced hammer spring will definitely reduce your trigger pull, it will also increase your chances of a misfire. Your choice.
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Old September 24th, 2007, 08:49 AM   #9
 
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Has any one had problems with miss fires by switching to 19# spring? I ordered one friday.
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Old September 25th, 2007, 03:40 AM   #10
 
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Since my spring swap I've cycled about 500 rounds in my ruger p. No interupts or misfires. Wolfe Springs will only create springs for a pistol that are safe to use in that pistol. Ruger went with a heavier hammer spring to slow reaction time to give you one last chance to think before you shoot. They were intended to be used in the line of duty and personal defense. So an extra second before firing may keep you from making a mistake. Especially when your adrenaline is pumping through your veins. Me personnaly if I have to pull my gun out I'm using it. I dont see it wise to use a gun to negotiate your position. So im shootin'.
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Old September 25th, 2007, 11:10 AM   #11
 
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Quote:
quote:Originally posted by Hooligan

Since my spring swap I've cycled about 500 rounds in my ruger p. No interupts or misfires. Wolfe Springs will only create springs for a pistol that are safe to use in that pistol. Ruger went with a heavier hammer spring to slow reaction time to give you one last chance to think before you shoot. They were intended to be used in the line of duty and personal defense. So an extra second before firing may keep you from making a mistake. Especially when your adrenaline is pumping through your veins. Me personnaly if I have to pull my gun out I'm using it. I dont see it wise to use a gun to negotiate your position. So im shootin'.
Hooligan - After spending many years with Ruger working on the P89 I feel I need to correct your statement. The spring rate of the hammer spring was designed to provide a 'minimum all-fire' amount of energy to the firing pin in the DA mode which has less travel than in SA. This 'all-fire' spec is based on all types of primers available, from soft commercial to hard military. This was also intended to overcome friction and manufacturing tolerances as well as spring rate tolerances. I, personally, did much of the testing on various hammer spring rates.

You can stick with your story and change the hammer spring if you wish, but I was there and have seen many guns come into service for misfires with aftermarket hammer springs that were repaired simply by replacing the aftermarket spring with a standard one. Don't try to be a gun designer without understanding the requirements. You're going to get hurt. As I said, it's your choice. Stay with the factory spring and guarantee an 'all-fire' or take your chances with aftermarket and a possible misfire.

My personal gun has a very heavy hammer spring in it. Springs have rate tolerances also. 10% is quite common. I picked mine from a box of standard springs, but the heaviest one I could find. Like everybody else, I like a nice trigger. But I leave that to my match guns. For personal protection, I use every edge I can get.
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Old September 25th, 2007, 01:31 PM   #12
 
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On the internet anyone can say they are from southport, conneticut maybee even prescott, arizona or newport, new hampshire. They can tell you about all the supposed wonderful things they have done. All I know is what I have done to my own items no bull required for that. I shoot Corbon +P rounds which have the hardest primer cap shell surrounding the anvil. Most brands of ammo use winchester primers which use a much softer metal. The best reason I ever heard for the stiff hammer spring was that the P-85 was originally designed to fire 9mm x 19mm high velocity ammo intended for assualt rifles. Which was the only reason the heavey drop was required. But of course if coffee pot personally tested the p-89 back before 1991 he'd know that of course. It wasn't until its redisign finished in 1991 that the P-89 was finished. It had to be redesigned for faulty design. Which means the designers on this project are responsible for loosing a military contract for Ruger (Shame)to Beretta and their M92. So unless you plan on shooting high velocity assualt weapon ammo through your personal pistol like myself you shouldn't run into any issues.
Thank You
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Old September 25th, 2007, 02:10 PM   #13
 
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Quote:
quote:Originally posted by Hooligan

On the internet anyone can say they are from southport, conneticut maybee even prescott, arizona or newport, new hampshire. They can tell you about all the supposed wonderful things they have done. All I know is what I have done to my own items no bull required for that. I shoot Corbon +P rounds which have the hardest primer cap shell surrounding the anvil. Most brands of ammo use winchester primers which use a much softer metal. The best reason I ever heard for the stiff hammer spring was that the P-89 was originally designed to fire 9mm x 19mm high velocity ammo intended for assualt rifles. Which was the only reason the heavey drop was required. But of course if coffee pot personally tested the p-89 back in 1985 through 1987 he'd know that of course. It wasn't until its redisign finished in 1989 that the P-89 recieved its name. It had to be redesigned for faulty design. Which means the designers on this project are responsible for loosing a military contract for Ruger (Shame). So unless you plan on shooting high velocity assualt weapon ammo through your personal pistol like myself you shouldn't run into any issues.
Thank You
Would you like me to send you one of my business cards?
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Old September 26th, 2007, 02:52 PM   #14
 
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I'd suggest that anyone who changes springs(or any working part for that matter) test them extensively for function with their ammo choices. I've seen more than one weapon fail due to the springs being changed (mostly revolver there).

As for me, I've stayed factory stocked for the most part. its kept me out of trouble.
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Old September 26th, 2007, 04:37 PM   #15
 
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I think it'd be great and like this Forum if we'd return to the subject of debate without the little side trips to cast doubt on a person's character and experience...we don't do that here...we have heated debates based on the facts and our opinions but you don't strengthen your point a bit by attacking the record of your opponent...this ain't politics and it ain't gonna be...it's a bunch of friends all across the country who may agree or may disagree...but we show each other personal respect....
Now, back to the subject...I've never let anyone mess with my springs in either revolver or pistol...just smooth and polish surfaces that have to do with trigger squeeze...I've had some real smooth triggers that way...even if I had a broken spring, I think I'd go back with factory springs...when the SHTF, click is a horrible sound...
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