Hammer fall & jumping safety - help plz!

[Silverbullit]

Help mates,

Swedish Peter Stahl 6" 1911 in trouble!
What is the cause and solution to these problems,
1/ The hammer falls when you release the slide if the magazine is empty.
2/ The thumb safety jumps in to safety mode when you fire. The safety seems to have a suitable inertia motion. This problem occurs with a higher regularity with hotter loads.

Deeply appreciate your knowledge on this mates.

/Silverbullit

[Joni Lynn]

The first problem is probably due to a light trigger or wear on the sear/hammer engagement. Possible the sear spring is weak or the trigger return spring isn't strong enough. I'm not a gunsmith so that's my best guess.
The second problem I have absolutely no clue about.

[Sniper350]

Well, your thumb safety should be held in the fire mode by means of the plunger and plunger spring inside the plunger tube.

Check to make sure that the plunger and spring did not get misplaced at some point. The thumb safety oftens has a small detent machined into it to accept the tip of the plunger. Make sure these are lining up.


JF.

[robot1911]

Lock the slide back with no magazine inserted. release the slide either by slingshotting or pressing the slide stop release. This is a terrible thing to do to a tuned 1911 and I wouldn't suggest it but for your problem.
If the hammer follows, then do the same thing again only this time hold the trigger all the way back...firmly. If the hammer falls, you have a case of 'trigger bounce'. That means that when the slide slams into battery with no ammo to impede it's speed, it jars the frame forward but the trigger wants to stay where it is and that means it strikes the disconnector which in turn strikes the sear feet and releases the hammer.
If that turns out to be the problem, you can probably cure it by bending the center leaf of the leaf spring to put more
pressure on the trigger and stop it from moving independently of the frame.
If that isn't the culprit, try putting more pressure on the left leaf of the leaf spring. That'll put more pressure on the sear into the hammer hooks and maybe stop the 'hammer follow.'
If neither of these fixes work, you need some trigger work because some serious wear or damage has taken place.

Bob

[Canuck-IL]

then do the same thing again only this time hold the trigger all the way back...firmly. If the hammer falls....
Bob - shouldn't that be "doesn't fall" with the trigger held back...then he has trigger bounce that was canceled by holding it while dropping the slide.

/Bryan

[robot1911]

Well, now you have me confused. I mean for him to experience hammer follow first with the trigger free to move. Then prevent hammer follow caused by trigger bounce by holding the trigger. If the hammer still follows, trigger bounce is not the culprit.

Make any sense??

Bob

[Canuck-IL]

Yes it does - if the hammer doesn't fall when dropping with the trigger held back then he has bounce and should try bending the sear spring as you indicated.
/B

[robot1911]

Right on! You rascal...you trying to keep me on my toes??

[Canuck-IL]

Well, it's what you taught me when I had the same problem! (on the Norinco about 2 years ago)
/Bryan

[robot1911]

Ah Ha!! Now I know your memory is mucho better than mine.

Bob

[Silverbullit]

Lock the slide back with no magazine inserted. release the slide either by slingshotting or pressing the slide stop release. This is a terrible thing to do to a tuned 1911 and I wouldn't suggest it but for your problem.
If the hammer follows, then do the same thing again only this time hold the trigger all the way back...firmly. If the hammer falls, you have a case of 'trigger bounce'. That means that when the slide slams into battery with no ammo to impede it's speed, it jars the frame forward but the trigger wants to stay where it is and that means it strikes the disconnector which in turn strikes the sear feet and releases the hammer.
If that turns out to be the problem, you can probably cure it by bending the center leaf of the leaf spring to put more
pressure on the trigger and stop it from moving independently of the frame.
If that isn't the culprit, try putting more pressure on the left leaf of the leaf spring. That'll put more pressure on the sear into the hammer hooks and maybe stop the 'hammer follow.'
If neither of these fixes work, you need some trigger work because some serious wear or damage has taken place.

Bob

Thanx mates!!!

Followed advice and bending the center leaf spring seemed to make a much happier pistol yesterday! =)
Only had an hour (job) to testrun her at the range but she behaved flawless.
Will put her through some more shootouts and get back to you with feedback.

Thank you mates, you are always there and reliable, I dont know why anyone need gunsmiths when youre all right here =)

/Silverbullit

[Silverbullit]

Bad news mates,

The problem has changed to something new instead!

The thumb safety jumped in safe mode a couple of times,
when the thumb safety is released the hammer falls!
It does not fall all the way, it stops just before it completed the fall...

What has happened?
What is the cause of this hammerfall?

I would really appreciate more of your input on this changed new problem mates!

/Silverbullit

[robot1911]

Last issue first: The thumb safety will stop at the halfcock notch before reaching the firing pin...hopefullyi.

Sounds like you have it assembled with something missing. I'd remove the thumb safety, grip safety and leaf spring and then reinstall them, making sure the left leaf is setting on top of the sear foot (and not in front of it) and that the little bent tab on the bottom end of the leaf spring is in the slot in the frame.
If everything turns out properly installed and the problem is still there...we have another culprit.

Bob