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View Full Version : Installed the EGW firing pin stop!


sigep1967
16th January 2009, 10:04
Wow you guys were right on the difference in recoil. I do have one question though. I am getting a straight line contact point toward the bottom of the hammer when the slide starts its recoil cycle but after the slide has pushed the hammer back to full cock and the slide rides over it again the contact point is only on the right side of the hammer?

niemi24s
16th January 2009, 13:30
Hi Sigep1967: :wc: to the Forum!

If what you're telling us is that the FPS loses contact with the left side of the hammer face as the hammer gets rotated, then either:

• the hammer face is not flat, or
• the hammer twists a little as it rotates because the pin hole's a little crooked

Regards

sigep1967
16th January 2009, 14:46
Well yes I guess that is correct but on my pistol SA GI as the slide come back it cocks the hammer then loses contact the regains contact right at the top of the hammer. It is an after market Commander style hammer.

niemi24s
16th January 2009, 15:07
Oh, I see now. If the contact is lost when the gun is actually fired - that's normal. I (foolishly) assumed you were talking about a shift in contact when the slide was being pulled back by hand.

The hammer on some (most?) 1911's will (because of its momentum) actually "get ahead" of the FPS when the gun's fired.

If I'm finally undertanding you correctly, what you observed is normal.

Regards

sigep1967
16th January 2009, 15:13
Yes the hammer gets ahead of the slide. and when the slide bumps it again right at the top of the hammer it just touches one side.

niemi24s
16th January 2009, 21:45
The same 2 causes mentioned in Post #2 still are valid for your description in Post #5.

However, I wouldn't be concerned about it. The hammer and hammer pin undergo the greatest stress during the first part of the cocking phase. That's when it's most important for the FPS to bear evenly across the hammer face and yours does.

If you want the FPS to contact all across the hammer face through the entire range of hammer rotation then you must either flatten the hammer face (if that's the cause) or get a hammer with the pin hole perpendicular to the sides.

And now that I think more about it, the cause might also be that the hammer pin holes in the frame are not perpendicular to the frame.

When the hammer's down, does it seem to fit evenly into its notch in the back of the slide?