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PostPosted: Sun Aug 02, 2009 4:33 pm 
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This is what Surplus rifle is all about. Sharing ideas and experiences. Thanks for the spring tip on setting the nut.

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PostPosted: Tue Sep 22, 2009 11:31 pm 
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Stupid me, but how to you get the grips off. They look like they are riveted on. I HATE RIVETS! Messy, messy, messy.

Nice post with pretty pictures. Not to mention nice idea.

Oh, I like the single action, does this change it any? I'm not giving up my single action.... Lighter would be better.

Best Regards,

Mark Swihart

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PostPosted: Wed Sep 23, 2009 7:41 am 
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When you lay the pistol on its side, barrel pointing to the right, you will see two screws above the grip. If you unscrew the top one, it will remove a side plate and give you access to the grip screws in addition to the gun's inner workings. :thumb:


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PostPosted: Fri Feb 12, 2010 3:35 pm 
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When I installed the nut as shown (#6 was the largest size I could fit), the cylinder would not advance and the trigger would not reset. When installed, it looks exactly like the picture but renders the gun inoperable.


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PostPosted: Fri Feb 12, 2010 6:09 pm 
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Can you provide a close up photo of your installation? you may have a worn part causing the problem. Is your pistol double action?

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PostPosted: Fri Feb 12, 2010 6:38 pm 
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This is a double action, Izzy 1945. It will not advance the cylinder and the trigger freezes after firing. I can manually reset the trigger but this does not correct the problem. I've inspected the parts and the DA engagement (sear?) is sharp and is not worn.

Newly installed:
Image

Trigger "frozen" after firing"
Image

Cylinder advance arm protruding after firing:
Image
Image


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PostPosted: Fri Feb 12, 2010 10:24 pm 
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Well, I was thinking about things more and I figured out it was an issue of tolerances. If you look at the previous pictures, the nut pushed the lower leaf of the spring too much which was causing the issues. Therefore, all I needed to do was find a smaller stop. Specifically, the stop needed to be .224" in diameter. :mrgreen:

The trigger is much lighter now, both in DA and SA.

Image

I should add that its an all matched 1945 Izzy with sharp rifling and identical proof marks. It came over from IO.


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PostPosted: Mon Apr 19, 2010 1:15 pm 
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I know this is an old posting, but i wanted to say that while this trick does lighten the single action trigger pull, it also after time seems to weaken the main spring.....i did this trick about 2 yrs ago and in that 2 years probably put bout 100rds through the pistol.....yesterday i took mine to the range and after about 20rds my mainspring broke. the break was just above where the nut sat in the frame. not sure if the nut being there was the cause or not......but it's something to think about.....sucks b/c with the nut in place the gun had a really nice trigger pull over stock

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PostPosted: Mon Apr 19, 2010 5:25 pm 
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Dang! Never heard of that happening. I've shot hundreds of full house loads and a few boxes of .32ACP through my pistol with no ill effects. I'll hook up a force gauge and see how much pressure is on the corner of the nut.

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PostPosted: Mon Apr 19, 2010 6:00 pm 
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like i said I don't know for sure if the nut was the cause or not rob

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PostPosted: Thu Jun 03, 2010 9:37 pm 
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nice tip!


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PostPosted: Sun Feb 06, 2011 9:48 pm 
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seems like I can't get this to work. Could a gunsmith make permanent modifications to adjust trigger pull of this particular firearm?

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PostPosted: Mon Apr 25, 2011 8:08 pm 
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Definitely glad for this thread for giving my brother a good idea. We smoothed out the trigger pull without even shaving off parts of the spring or using the nut. Using a pair of pliers, he bent the ends of the spring inward a bit. He was able to lighten the pull without compromising the pressure needed to return the trigger back to its original position. :D


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PostPosted: Sat May 26, 2012 3:55 pm 
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Sharp points like the points on a nut will create stress risers when a spring rides on it constantly. The Russians/Soviets knew this and used a truncated bullet under the spring, never a machine nut! The spring tension can be adjusted by flattening the bullet slightly.

Image
Image
The spring on this 1923 target revolver has been thinned as well. Note how the bullet has been flattened to reduce the amount of tension removed from the lower leaf of the spring.

Joe


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PostPosted: Sun May 27, 2012 10:04 am 
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"Is RRRRRussian Gun (roll the r's). Comrade, here is da gun.

Dont loose it or break it. Siberia verrrrry Cold this time of year.

Here is 2 x 4.. to adjust gun!"

All joking and kidding aside, I learned alot from this post. I have been thinking of getting one of those commie 7 shooters for a spell now.

Thanx guys.

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