1911 Main spring
Hello all, I was wondering is someone may answer a question about lighten mainsprings. I am currently shooting a STI Spartan V 9mm. I was wanting to lighten the trigger. I was thinking of changing the...
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I use the 19# mainspring in all my 1911/2011 pistols and have no ignition issues. My trigger pulls are between 2 and 3 lbs
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Jeff, Have you measured the weight of your trigger pull? I'd be curious to know how light you want to make it and advise you that IMO less than 3 1/2 lbs is not advisable. Depending on your experience...
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One thing to remember, the mainspring and recoil spring impact each other. Tinker with one to solve a perceived issue and you may cause a new issue. People working to get their balance of hand loads...
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Rick, It's correct that the left leaf of the sear spring contacts the sear but it's the middle leaf, the one that contacts the disconnector, that affects the trigger pull increase or decrease....
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Thanks guys, I have been around the auto 45's when people were lightening the springs. I was trying to avoid that. :-) As it is definitely not a good thing and that person was the floor show for sure....
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Nevermind. I just noticed that we're talking about a 9mm - I had .45 in my mind.
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If you have a couple springs, keep one on hand so you can compare the geometry in case you bend too much one way or the other. It really just takes a little to make a change. But you should also have...
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Here you go, I went through a library of pics. This shows the three fingers on the sear spring. You can see the contact with the sear on the left. The middle finger contacing the disconnecter gives...
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Thanks for the great posts guys. I have it at 4lbs not and man does it feel nice. :-) Function tested it today with about 150 rounds and worked flawless. Though I still have one question. I bent the...
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Trunkmnky wrote: If so can anyone explain why this lightened the trigger.The total trigger pull is made up of many things that each contribute to...Read More
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Jefff, you are fine. As Gregg mentioned, the pressure on the disconnector is also the pressure for the trigger reset and pretravel. When you relax them in concert with each other, you can raise or...
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JeffTo answer your original question. I have run well over 100K in 1911's with a 17 lb ISMI mainspring and never had a light strike. I don't know how it would work in something like a Springfield with...
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Greg, So with the above being said Changing the main spring could possibly work against you in the hammer fall would be slower ( not that I am fast enough to notice ) However, cycling could be faster...
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JeffYes, on paper you could say that the hammer fall may be slower. I don't think that anyone would be able to notice but technically if the lock time was slower you could get it back by installing a...
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Re: 1911 Main spring
ISMI 19# main spring, short radius firing pin stop, Ti firing pin with heavy firing pin spring, ISMI 15# recoil spring in all .45 1911s. Greg tinkers more than me.Read More
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Re: 1911 Main spring
Cody Ray wrote: ISMI 19# main spring, short radius firing pin stop, Ti firing pin with heavy firing pin spring, ISMI 15# recoil spring in all .45 1911s. Greg tinkers more than me.Read More
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Hahaha, I think Greg said it best a few posts back. "I think many of us have the "I must tinker" illness, just be safe while doing it." Still tinkering with mine to get some better accuracy. Tighter...
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STI's higher-end guns come with 15# mains; is the Spartan different? A buddy has had considerable trouble trying to ignite Russian primers with his STI Edge.
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Hammer drop is a function of the mainspring. But the Russians might be trying to seek revenge on us 'mericans.
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