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Trouble with New Vaquero/SBH Hammer Swap

This is a discussion on Trouble with New Vaquero/SBH Hammer Swap within the Ruger Single Action forums, part of the Pistol & Revolver Forum category; Need some help/advice. I just replaced my OEM New Vaquero hammers with Super Blackhawk hammers (purchased from Midway). Install went well, but both new hammers ...


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Old July 15th, 2013, 06:36 AM   #1
 
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Trouble with New Vaquero/SBH Hammer Swap

Need some help/advice. I just replaced my OEM New Vaquero hammers with Super Blackhawk hammers (purchased from Midway). Install went well, but both new hammers have a noticeable bump/hang up when cocking. It happens when I pull the hammer back about 1/18-1/4 inch. Can't seem to nail down the problem. Factory hammers are smooth. Any suggestions? Thanks.



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Old July 15th, 2013, 12:57 PM   #2
 
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Make sure the base pins are FULLY inserted.
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Old July 15th, 2013, 01:56 PM   #3
 
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Quote:
Originally Posted by Relic Hunter View Post
Jaymo, I installed a SBH hammer on my New Vaquero, but it "bumps" when I cock it. Happens about 1/8 - 1/4 inch during cock. Did you experience similar problem with yours?
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Originally Posted by Iowegan View Post
Relic Hunter, The "bump" you feel is the hammer plunger camming off the cylinder latch ... very normal, however in some guns it's barely noticeable.
Iowegan's comment from the other thread. You may want to ask him if there's anything you can do to "smooth it out." If anyone on the entire forum knows the answer, it would be Iowegan. Good luck.
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Old July 15th, 2013, 05:42 PM   #4
 
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I tried the same hammer deal with my flat top new model blackhawk. 45 colt/45 acp. The hammer would cock, but would not release when the trigger was pulled. Don't know what the deal is. Would like some suggestions. Thanks
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Old July 16th, 2013, 05:38 AM   #5
 
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Thanks for forwarding Lowegan's comment. I'll send him a note to see if he has any suggestions regarding smoothing out the bump. I'm new to the forum, so didn't see the "other" thread. Will figure it out eventually!
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Old July 16th, 2013, 08:51 AM   #6
 
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10 posts and then you can send a private message. I never had that issue with hammer swaps. Lucky I guess?
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Old July 16th, 2013, 10:30 PM   #7
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Relic Hunter, When you were swapping hammers, maybe you noticed there was a spring loaded plunger located near the base of the hammer. Ruger doesn't get the hole for the plunger drilled perfectly the same nor are the plungers the same identical length so this is why you may feel the "bump" with one hammer and not the other.

Here's how it works ... as you begin to cock the hammer, the tip of the hammer plunger will contact the rear of the cylinder latch and lift it up. The cylinder latch is a "rocker" that pulls the front of the latch down to release the cylinder so it can rotate. This function HAS to happen or the cylinder won't rotate nor will the hammer cock. Once the hammer plunger lifts the cylinder latch and the cylinder rotates a few degrees from being cocked, the hammer plunger will cam off the latch. After the hammer is fully cocked and you pull the trigger to release the sear, the hammer will thrust forward. The tip of the hammer plunger will strike the top of the cylinder latch ... a very noticeable feel if you ease the hammer down. This forces the cylinder latch up so it will lock in solid with one of the cylinder lock notches. At the same time, the hammer plunger will be pushed back in its hole so it can pass by the cylinder latch. Once the hammer plunger clears the cylinder latch, it will pop back out of its hole and be ready for the next cocking cycle.

All Ruger SAs have the same design ... all will have a slight "bump" as they are being cocked and a notable bump when the hammer moves forward ... some are just more noticeable than others and there is no need to ... in fact don't even try to smooth it out or the gun won't function.
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Old July 16th, 2013, 10:38 PM   #8
 
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"Factory hammers are smooth. Any suggestions? Thanks." Yeah I have a suggestion. Put the factory hammer back in. If you don't mind telling, why did you change in the first place?
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Old July 17th, 2013, 10:29 AM   #9
 
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Lowegan, thanks for the very detailed explanation.....I won't mess with it! As for why I made the hammer change.....I am a bit on the "senior" side of life and just getting into cowboy action shooting. I use a pair of New Vaqueros (.357). The original hammer is a bit high for my hands and I shot a modified Vaquero with the wide spur and shorter profiled super blackhawk hammer. I found it easier to cock/handle during a practice stage. So, figured I would make the modification on my Vaqueros. Seemed simple enough. Will give it a try with the new pronounced "bump". Thanks to all that responded. Good shootin'!
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Old July 17th, 2013, 11:37 AM   #10
 
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The SBH hammer dropped in perfectly in my NM Vaquero. Sorry to hear it didn't work out on yours, RH.
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Old July 18th, 2013, 04:21 AM   #11
 
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Trinimon, I was expecting similar results as you, especially based on what I read on various blogs. Thinking about it, it could be the hammers I purchased from Midway. If they are after-market, then perhaps the tolerances are not the same as OEM hammers. I'll have to check it out. If they are not origfnal Ruger hammers, I may have to send back and order hammers directly from Ruger.
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Old July 18th, 2013, 04:48 AM   #12
 
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Quote:
Originally Posted by Relic Hunter View Post
Trinimon, I was expecting similar results as you, especially based on what I read on various blogs. Thinking about it, it could be the hammers I purchased from Midway. If they are after-market, then perhaps the tolerances are not the same as OEM hammers. I'll have to check it out. If they are not origfnal Ruger hammers, I may have to send back and order hammers directly from Ruger.
Please let us know what you come up with, I plan on doing the hammer swap on my NM Vaq also
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Old July 18th, 2013, 06:19 AM   #13
 
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I bought my SBH hammers from Brownells.
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Old July 18th, 2013, 07:06 PM   #14
 
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Quote:
Originally Posted by TheWall View Post
....... If you don't mind telling, why did you change in the first place?......
Cannot speak for the OP, but can speak for myself and others I know: You change the hammer to the SBH-style because the "thumb pad" of the hammer is lower than the stock New Vaquero / Vaquero / Blackhawk, making it a whole lot easier to reach to cock.

See the link below for the different shapes:
http://rugerforum.net/attachments/ru...hy-hammers.gif
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