.38 Regulation Police hit-or-miss cylinder rotation

daveboy

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I thought I got a great online deal on a .38 Regulation Police. After receiving it, I noticed some "issues" with it. I'm more of a K-frame guy, knowing my way around the inner-workings of them. I noticed this little I-frame's cylinder didn't always rotate, and the action was pretty tight. I disassembled it for a good cleaning.
This is a photo I took just after removing sideplate and before any further disassembly.IMG_3152.webp I cleaned it up good, and noticed some things didn't seem quite right. I've since learned that this is some kind of Asian or South-American copy of the real deal. That explains a lot. Still, I'd like to make it work a little better and at least fire it.
On disassembly, I noticed the hand does not have the usual (like K-frames) method of applying forward pressure to stay in contact with the cylinder. It has a round pin that simply slides into a hole in the trigger. There is no spring, like on K-frames, that applies forward pressure to the hand. You can see in these photos the hand installed into the trigger, and then flipped over showing you the backside.IMG_3190.webp IMG_3189 (1).webpThinking I was just overlooking something and a cleaning would resolve it, I cleaned everything up, reassembled, and the issue has not been resolved. The hand will usually rotate the cylinder enough to lock for one trigger pull. After that, it might rotate, and might not. I have an investigative, tinkering mind, and as this revolver sits now I cannot see any method to ensure consistent contact between the hand and cylinder. I can hold it muzzle down and it will usually rotate. Hold it muzzle up, and no rotation. I'm thinking something has to be missing. I see the notch near the bottom of the hand, and think it has to be there for a reason.
I've looked online for a schematic, to see if something is missing, but I can't find a good one. I have another genuine I-frame, to compare it with. But, it's a Model of 1903 and has an entirely different style of hand.
I see that milled into the sideplate is a slot that the hand rides in. Is that supposed to guide the hand, keeping it forward? If so, it's not functioning as intended.
I now know that it's a reproduction and will never work as good as the real deal. However, I am also certain that it actually functioned at one time. So, my question to you experts is: Assuming this forgery is designed the same as a genuine Regulation Police, what puts pressure on the hand to ensure consistent contact with the cylinder ratchets on this model? Thanks ahead for any help.
 
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Could there be a spring on the sideplate (maybe missing?) to hold the hand forward? We can't see what the inside of the sideplate looks like.
I should post a photo of the inside of the sideplate. There is no place for a spring. It's just a milled slot with a pin protuding into it that holds the hammer block (which is broken).
 
Or maybe a wire type hand torsion spring, that would bend around the trigger keeping tension on the hand?
That would make sense, but I need a diagram/skematic to figure out what I'm missing.
 
I have an older Smith, not quite sure of the model as it's out of state. The spring for the hand is in the sideplate - horizontal spring & plunger. Was a major PITA to get back together. The plunger always was too far forward to seat behind the hand.
 
Regulation police hand and sideplate with spring loaded plunger…plunger is pointing down in the picView attachment 787736




View attachment 787737
That is exactly what I needed. Mine had a pin there, but it was driven in. No spring behind it and it didn't move. I had to drive it out. Thank you!
Now that I know what I need, the hard part may be finding it. I'll press my luck and ask if you have any idea where I might find the spring and plunger?
 
There seems to be very marginal contact surface between the nub on the bottom of the hammer and the protrusion on top of the trigger rebound slide. They should be lined up with full engagement for proper hammer rebound when the trigger is fully returned.
 
As I recall the pre WWII I frame uses three different hands:
Earliest which has a typical hand spring and doesn't have a side plate mounted hammer block safety,
Followed by the first style side plate mounted safety block which included a different style hand spring,
And lastly the second style safety block with a different hand and spring.

Your gun is a copy of the first or second style safety block.

Google Numrich Arms Parts Corp. and call them to help you identify which safety block version your gun has and the hand spring you need.
 

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