reduced power mainsprings for Beretta/Taurus PT92

[isuzu]

I have seen in gun magazines that Beretta/Taurus PT92 pistols' mainsprings are being replaced by reduced power 1911 mainsprings for a better trigger pull. Does anybody know about the poundage of the 1911 mainsprings they put in the Beretta/Taurus pistols?

[SchlaffTablett]

You can use the standard weight mainspring from a 1911 but it will tend to stack a little. You'd be much better off picking up a Beretta "D" mainspring as a replacement. Factory 92 is 20# and the D is 18# and dosen't stack at all. --ST

[ibfurloughed]

I bought a variety ack from Wolff springs. 20 down to 16#. I've been runinng the 16# spring for over 600 rounds now and it hasn't missed a beat. Buy the way mine is a 96 Brig.

[SchlaffTablett]

The Wolff springs are what I'd recommend as well, however, whenever you change out springs, you should try to balance them out as best you can. By this I mean, if you go with we'll say the 18# mainspring (2lbs less than standard factory) you'd do well to bump up the reciol spring 2# to compensate for the differance. This will tend to keep everything wearing as intended (or better than) from the factory. For that matter, even if you don't change the mainspring I'd up the recoil spring anyway to the 15# just to keep frame battering to a minimum (13# is factory standard for both 9mm nad .40). --ST

[isuzu]

Thanks, guys! I'll be increasing the recoil spring to about 2 lbs to compensate for the reduction of the mainspring.

[Navy87Guy]

I had a 16# 1911 spring in my 92G and I had about 20% light strikes on my WWB ammo. Upped to a 19# 1911 and it's been running fine. I also picked up a Model D spring, but it actually felt stiffer than the 1911, so I have it in hot standby.

Jim

[SchlaffTablett]

The D spring does tend to be a litle tight for the first hundred rounds or so. After it breaks in it feels great. --ST

[ibfurloughed]

Originally posted by SchlaffTablett
The Wolff springs are what I'd recommend as well, however, whenever you change out springs, you should try to balance them out as best you can. By this I mean, if you go with we'll say the 18# mainspring (2lbs less than standard factory) you'd do well to bump up the reciol spring 2# to compensate for the differance. This will tend to keep everything wearing as intended (or better than) from the factory. For that matter, even if you don't change the mainspring I'd up the recoil spring anyway to the 15# just to keep frame battering to a minimum (13# is factory standard for both 9mm nad .40). --ST

I don't understand this, not saying it's wrong just I don't understand the relation your speaking of. The "main" spring or "hammer" spring dictates teh force the hammer strikes the pin. The recoil spring slows the the slide coming back on the frame after firing and chambers the next round. With that understanding how do the two springs have to "balance" one another?

I do have a 15# recoil and a 16# hammer springs in my 96 brig and it works great with both federal eagle 165gr practice rounds as well as my defense rounds, speer 165gr.

[spober]

ithink he meant it in a different way.because their is no conection between them.not mechanically balanced maby over all balance of desighn?;a

[isuzu]

The hammer spring or mainspring, in a way reduces recoil as far as I know. Both springs, do complement each other. Remember, that it is the slide velocity during slide recoil that cycles the hammer back to its cocked position. If you have a lighter hammer spring or mainspring, there is a corresponding reduced resistance from the hammer when the slide hits it during the firing cycle.

Correspondingly, when you have a heavier mainspring, the resistance of the hammer with regards to the slide is also greater.

That probably explains why people who change to a reduced mainspring compensate or somehow equalize the slide velocity by changing to a heavier recoil spring.

[SchlaffTablett]

Exactally what Isuzu said.

[ibfurloughed]

Thanks, I got it. Good explaination.

[isuzu]

I had my Taurus PT-92 barrel cut and recrowned by my gunsmith to look like the Beretta Elite pistols. What I've noticed is that the pistol became more accurate, and the felt recoil hasn't changed somewhat.

Do I have to change the recoil spring if the barrel has been shortened?

[SchlaffTablett]

You shouldn't have to chane the springs because you took 3/8" off your barrel. The extra oz or 2 won't make that much difference. --ST

[isuzu]

Originally posted by SchlaffTablett
You shouldn't have to chane the springs because you took 3/8" off your barrel. The extra oz or 2 won't make that much difference. --ST

Got it! Thanks! :)

[isuzu]

Originally posted by SchlaffTablett
The D spring does tend to be a litle tight for the first hundred rounds or so. After it breaks in it feels great. --ST

What brand of hammer springs do you recommend? I just surfed the Wolff website and can't find a hammer spring for the D series pistols. Are they just the same length as the 92F series, but different poundage? Any help would be greatly appreciated.:)

[SchlaffTablett]

You can either buy the Wolff 18# or factory Beretta "D" springs. The D springs can be gotten form the Berettaforum.net classified section. They usually run about $3-5 from either place. --ST

[isuzu]

Originally posted by SchlaffTablett
You can either buy the Wolff 18# or factory Beretta "D" springs. The D springs can be gotten form the Berettaforum.net classified section. They usually run about $3-5 from either place. --ST

Thank you so much!

[five-0]

Originally posted by SchlaffTablett
The Wolff springs are what I'd recommend as well, however, whenever you change out springs, you should try to balance them out as best you can. By this I mean, if you go with we'll say the 18# mainspring (2lbs less than standard factory) you'd do well to bump up the reciol spring 2# to compensate for the differance. This will tend to keep everything wearing as intended (or better than) from the factory.--ST

Beretta's DAO pistols come standard with the reduced "D" mainspring and keep the same weight(stock) recoil springs as the DA/SA pistols with the heavier mainsprings.
SchlaffTablett's advice is not neccessarily bad, but keep this in mind.

[isuzu]

Originally posted by five-0
Beretta's DAO pistols come standard with the reduced "D" mainspring and keep the same weight(stock) recoil springs as the DA/SA pistols with the heavier mainsprings.
SchlaffTablett's advice is not neccessarily bad, but keep this in mind.

Thanks!:)

[Gustavo]

I installed a 19lbs 1911 spring in my 96 Vertec and got light strikes (CCI Blazers) also shells where flying quite further away than with the stock main spring.

[Navy87Guy]

Originally posted by Gustavo
I installed a 19lbs 1911 spring in my 96 Vertec and got light strikes (CCI Blazers) also shells where flying quite further away than with the stock main spring.

I posted earlier in the thread that I had a 19 lb 1911 spring and it was working fine. Well, last week in my USPSA class I had at least half a dozen light strikes (still using WWB ValuPak). So I've now replaced it with a "D" spring...that should solve the problem (although the pull isn't quite as sweet!)

Jim