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Post by Big Bore on Sept 22, 2024 20:23:28 GMT -5
I ordered a power custom fixture and a few adapters. One in particular is for a S&W K,L,N frame revolver. So tonight I set it up to work on my newly acquired (used) 629-6. When I set it according to the instructions, the stone sits almost perpendicular to the hammer surface. Is this correct? Seems really odd to me. I’ve never used a fixture before but I was assuming once set up, the stone would sit almost flat on the surface that the work would be done on. Tried to get a picture of it. Thanks in advance! Picture is loading sideways. Not sure why.  Attachments:
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Post by bigbore5 on Sept 22, 2024 22:04:30 GMT -5
Which version of the fixture did you get? Series 1 or 2
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Post by Big Bore on Sept 23, 2024 4:34:44 GMT -5
Which version of the fixture did you get? Series 1 or 2 Series 1 |
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Post by bradshaw on Sept 23, 2024 9:12:43 GMT -5
Randy.... two items:
1) Angle of SEAR to stone looks wrong.
2) While I can’t speak to hardness qualities of post-drop forged S&W hammers & triggers, the forged parts are CASE HARDENED. The parts are NOT “color case hardened."
Thickness of case hardening measures in the two-digit thousandths of an inch. Stoning quickly penetrates the carburized surface to reveal much softer steel beneath. Resulting in a FUGITIVE TRIGGER which cannot long hold single action. Once the edge of the trigger sear is worn----it happens quickly----the trigger will kick forward at hammer fall. Causing the trigger to catch the FLY (double action sear). Result: misfire.
David Bradshaw
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Post by Big Bore on Sept 23, 2024 11:03:23 GMT -5
Randy.... two items: 1) Angle of SEAR to stone looks wrong. 2) While I can’t speak to hardness qualities of post-drop forged S&W hammers & triggers, the forged parts are CASE HARDENED (“color case hardened”). Thickness of the hardening measures in the two-digit thousandths of an inch. Stoning quickly penetrates the carburized surface to reveal much softer steel beneath. Resulting in a FUGITIVE TRIGGER which cannot long hold single action. Once the edge of the trigger sear is worn----it happens quickly----the trigger will kick forward at hammer fall. Causing the trigger to catch the FLY (double action sear). Result: misfire. David Bradshaw Thanks for the response. Didn't know that about point #2. I suspect whoever had this gun before me did some work on it. When I bought it from Cabelas, I inspected it closely and it appears to have minimal use in its history. Barrel and forcing cone both looked in near perfect condition. Forcing cone specifically shows almost no sign of use/deterioration. HOWEVER, Cabelas would not let me take the trigger lock off in the store and when I got home, it had a reasonably easy 'push off'. So I've swapped out both the trigger and hammer assembly but was hoping to smooth it out a bit, beyond replacing springs. Anyway...now I know. |
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Post by bradshaw on Sept 23, 2024 11:22:47 GMT -5
Randy.... note I meant to say the Smith & Wesson drop forged hammer & trigger are CASE HARDENED----not “color case hardened.”
It is remarkably easy to penetrate the surface-hardened S&W hammer and trigger. It’s even possible to defeat the carburized surface by polishing. Besides looking tacky, it is risky to buff or “jewel” the S&W hammer or trigger.
Ruger hammers & triggers are heat treated & through-hardened.
On a couple of revolvers with a glitch in the single action, I had a top mechanic at S&W fix it. If I had a glitch in single action today, I’d call Jack Huntington or Ronnie Wells. Other possibilities include Frank Glenn and Ron Power, both up in age.
Push off
I NEVER “test” engagement of full cock by pushing on the hammer. Cannot think of a more arbitrary stunt. By dubbing the full cock dog on the hammer or the sear on the trigger, it runs the risk of ruining a perfectly sound full cock engagement. Another form of FUGITIVE TRIGGER.
Proper engagement
My trigger work is tested by ten to 25 dry fires----gentle squeeze, straight back. Trigger finger floats, gently accumulating pressure until HAMMER FALL:
* Proper engagement----trigger sweeps rearward at hammer fall; or, contacts trigger stop.
* Fugitive engagement----trigger kicks forward at hammer fall.
David Bradshaw
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Post by Big Bore on Sept 23, 2024 13:46:16 GMT -5
bradshawThanks David. Appreciate the education today. I really enjoy working on my revolvers so every bit of info helps.
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Post by bigmuddy on Sept 24, 2024 0:26:25 GMT -5
“Ron Power, both up in age.”
Ron turned 84 on my Birthday. He’s no longer taking in gunwork.
Dan
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