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Author Topic: 1377 Trigger tuning  (Read 7858 times)

Offline Toolmaker

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1377 Trigger tuning
« on: November 19, 2009, 12:10:02 PM »
I've been tuning on my 1377 trigger some more. I had previously made and installed the sear spring guide (with lighter spring) and delrin shims to take out some of the side to side play without drag. I've now replaced the trigger and sear pivot pins with hardened and polished pins. The original pins were .123 diameter the new ones are .125. .002 don't sound like much, but every little bit does add up to a smoother trigger. I topped it all off with a custom .325 wide brass trigger shoe. I tried it out this afternoon and all I can say is I'm VERY pleased. I really didn't think the shoe would make much of a difference but boy it does. Here are a few pics.
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Matt N.
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Offline Gene_SC

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Re: 1377 Trigger tuning
« Reply #1 on: November 19, 2009, 12:59:59 PM »
Very impressive. Thanks for sharing that with us. Sure would love to get one of those forestock pump handles in wood...:)
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Offline ezman604

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RE: 1377 Trigger tuning
« Reply #2 on: November 19, 2009, 04:05:36 PM »


Nice job Matt. Where can I get some delrin shims? My new Walther Force 1000 has a sloppy side to side trigger. I need to shim it up too.
Thanks and Happy Shooting!!!!
Dave



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Offline gamo2hammerli

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Re: 1377 Trigger tuning
« Reply #3 on: November 20, 2009, 05:36:08 AM »
Wow Toolmaker, you really live up to your call-sign!!!!  Great job on that trigger job.
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Offline Toolmaker

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Re: delrin shims
« Reply #4 on: November 20, 2009, 07:34:47 AM »
Dave,

 I don't know where you could buy them, I turned those out on a lathe. You might check with Gene and see if that's something he offers?
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Matt N.
Pneumatic addict  
Benjamin 397PA (build date Nov. 09)  
Benjamin HB22 (build date Aug. 99)
Crosman 1377 (second variant build date Oct. 86)
Crosman 760c (build date Aug. 89)
Daisy Powerline 922 (Built in the 80\'s)
QB-78D .177  
Tech Force 6 (how did that get here?)

Offline ezman604

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Re: 1377 Trigger tuning
« Reply #5 on: November 20, 2009, 07:47:57 AM »
Tossing around the idea of buying some PTFE rods in a couple different diameters. I could use a meat slicer and cut to my own thickness. But, they want $20 per foot and two 1' rods would cost $22 shipping on top of that. Makes for some expensive spacers/shims. Might have to advertise and sell some special orders here. LOL
I'll check with Bob, Gene and some others to see if they offer some PTFE, Teflon, bronze or brass shims. Could use some all over my AGs. Breach pivot, trigger shimming, cushion and spacing for main spring, etc....
Dave
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Crosman/Revelation 760 PumpMaster (Vintage 1967)
Powerline 1000S .177 (semi-tuned by me)
Benjamin Super Streak .177/.22 (semi-tuned by me)
Benjamin Trail NP XL1500 (bone stock)
Benjamin Trail NP XL1100 (project gun)
TF89 .22 (tuned by Gene)
Winchester 1000WS .177 (semi-tuned by muwah)
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Offline Jaymo

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Re: 1377 Trigger tuning
« Reply #6 on: November 22, 2009, 04:53:17 PM »
What is the thickness of the Delrin shims you made for your trigger? BTW, I really like your work. That sear spring guide assembly is sweet.
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Offline kp4att

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Re: 1377 Trigger tuning
« Reply #7 on: November 23, 2009, 01:32:11 AM »
BEAUTIFUL JOB AND LOOK // GERALD
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Offline Toolmaker

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Re: 1377 Trigger tuning
« Reply #8 on: November 23, 2009, 12:23:42 PM »
Quote
Jaymo - 11/23/2009  12:53 AM

What is the thickness of the Delrin shims you made for your trigger? BTW, I really like your work. That sear spring guide assembly is sweet.


 I don't remember right off the top of my head. It's not easy to get an exact measurement on the trigger housing so I made up several shims starting at .012 thick and going to .027 thick, then I tried different combos of shims, one on each side of the trigger, until I was happy with the fit and feel.
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Matt N.
Pneumatic addict  
Benjamin 397PA (build date Nov. 09)  
Benjamin HB22 (build date Aug. 99)
Crosman 1377 (second variant build date Oct. 86)
Crosman 760c (build date Aug. 89)
Daisy Powerline 922 (Built in the 80\'s)
QB-78D .177  
Tech Force 6 (how did that get here?)
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