Fitting replacement parts (revolver)

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mec

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Compared to past years, I've been having a run of luck in ref: busted springs and parts. Finally caught up to me as the hand spring on my Navy let go yesterday. The revolver would work if pointed downward but had no cylinder rotation on the level or if held upward. Knowing the nature of the beast, I had laid in a supply of critical parts.

Hands are generally supplied with the spring already clamped in. Breakage is so common when trying to put a new spring in the hand slot, that suppliers frequently only sell them as a unit. This means fitting a new hand whether you want to or not. The spare Uberti Hand which I got from Cimarron is generic between the 60 army and 61 Navy. I found that it was a full 1/10th inch over-long. The primary drill was to make the new hand look like the old hand and work without causing the cylinder to throw by or lock up- while allowing the hammer to come to full cock. I needed a caliper, household files, stones and fine grit sand paper to do the job.
fithand.jpg

After this, I managed to remove the broken spring stud from the original hand and replace it with a modified large curling bobbie pin. This is something that worked very well with an old Remington 58 replica and I may end up using it in a pinch.

Other parts that can break or wear down include eveything in the revolver.
bolthand.jpg


The Bolts also come over sized and lacking the bevels seen in the picture. The key to all this is to take it slow with much reassembly and checking function. The other key to it is to be prepared for surprises.
 
mec,

If the existing hand is otherwise OK why not wire saw the remainder of the broken spring from the pocket and fit a properly tempered steel spring, or, as an easier, though somewhat less durable alternative, a spring made of German Silver?

Don't get this former toolmaker started on some of the excuses he's seen in recent years that are supposed to pass for springs :(

Springmaking, where any but coil springs are concerned, is unfortunately, in this day and age, becoming a DIY affair if good results are desired.

German Silver springs can be made to work well in relatively low stress applications like this. Yes, I said low stress. If you'd had a properly made steel spring fitted to the hand to begin with this never would have happened...

BTW German Silver is a family of alloys consisting of Copper (60-65%), Nickel (~20%) and Zinc (~20%). It is named for its resemblance in appearance to silver. It is an inexpensive material, and is also known as nickel silver. This material (in sheet form) in small quantities can sometimes be had from manufacturing jewlers.

Bob
 
the large flat curling bobbie pins are fairly springy and, in the past have been superior to the springs put in the Italian replicas. the problems come in trying to get them to stay in the slot on the hand. Generally, trying to re-crush fit it just causes the hand to break. On this one, I did remove the broken section and put in a replacement spring made from a bobbie pin. I mixed up some brownelles bedding gell to use for glue to hold it in. May work. May not. May work better than an original.

I've also made trigger/bolt springs from paperclips but cant say they work very well.
 
I used to replace those springs with spring wire. Bend the wire in a long "U" shape and stake the closed end in the slot in the hand. The two "free" ends are cut to the same length. They will remain in the channel OK and can be bent as necessary. (I tried staking the "free" ends in the hand; that works also, but not as easy to keep in place in the hand.)

Beautiful pictures, by the way. Very professional.

Jim
 
the right configuration of that spring wire should put the fix on the same level as the spring wire trigger/bolt spring thing.
 
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