Tuning for Reliability

[kurusu]

Originally Posted by Sieger

Hi,

The first usual failure point would be where the rear of the toggle link (holding the firing pin retainer) slaps the rear frame abutment. Is this the failure you are describing?

This slapping, eventually, causes these parts to fail, wounding the Luger, permanently.
Sieger

No, the cracks developed around the operating knobs. Caused, I believe, to the impact of the knobs on the ramp that breakes the toggle joint.
Very similar to this exemple:
cracked.JPG

Originally Posted by Sieger

With hot ammo, you can actually feel this slap in the web of your hand, as it can be very painful.

Sieger

Disagreable yes. But painful only if you let it slide up on your hand from the previous shot.
Or with people with smaller hands that in order to reach the trigger cannot set it perfectly in the hand web.

[Sieger]

Originally Posted by kurusu

No, the cracks developed around the operating knobs. Caused, I believe, to the impact of the knobs on the ramp that breakes the toggle joint.
Very similar to this exemple:
Attachment 43861



Disagreable yes. But painful only if you let it slide up on your hand from the previous shot.
Or with people with smaller hands that in order to reach the trigger cannot set it perfectly in the hand web.

Hi,

This is one heck of a crack!!!

Is the contact point with the slide badly peened?


Sieger

[kurusu]

Originally Posted by Sieger

Hi,

This is one heck of a crack!!!

Is the contact point with the slide badly peened?


Sieger

That picture was just an exemple I found on line, but very similar to what happened.

If by contact point you mean where the knobs hit the ramps, no they were normal for a much used Luger, polished and shiny with blueing gone.