Smith & Wesson Forum

Go Back   Smith & Wesson Forum > >

Notices

S&W Revolvers: 1980 to the Present All NON-PINNED Barrels, the L-Frames, and the New Era Revolvers


Reply
 
Thread Tools Display Modes
  #1  
Old 01-10-2021, 05:46 PM
Pdxrealtor's Avatar
Pdxrealtor Pdxrealtor is offline
Member
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Nov 2015
Posts: 474
Likes: 67
Liked 175 Times in 85 Posts
Default Airweight jframe internal question

At the base of all the pins (hammer, trigger, etc) there seems to be a raised boss.

I usually debur/square up the base , polish, and shim but I've not seen the raised bosses at the base before.... That I can remember

Are these ok to debur and polish flat?

I wasn't sure if maybe because it's an aluminum airweight the pins may have raised bosses for added support or for another reason Im not aware of.
Reply With Quote
  #2  
Old 01-10-2021, 08:34 PM
wrangler5 wrangler5 is offline
Member
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Mar 2011
Location: Missouri
Posts: 1,236
Likes: 3
Liked 899 Times in 454 Posts
Default

Probably just a materials strength question. Aluminum frame walls of a thickness equal to a steel wall probably don't "grab" a steel pin as tightly, and probably bend sooner if lateral pressure is placed on the pin. Like might happen if you dry fire with the sideplate removed.

If that's right, deburring and polishing the top of the boss wouldn't seem to change any dimensions, as long as you don't overdo it. But if it were me, I think I'd shoot the thing for a while and then see if there's anything bugging you about the action.
Reply With Quote
The Following User Likes This Post:
  #3  
Old 01-11-2021, 12:39 AM
transit transit is offline
Member
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Jun 2013
Location: Mos Eisley
Posts: 357
Likes: 2,051
Liked 782 Times in 242 Posts
Default



What, specifically are we talking about?
Reply With Quote
  #4  
Old 01-11-2021, 02:32 AM
GerSan69 GerSan69 is offline
Member
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Nov 2011
Location: metro Phoenix
Posts: 2,397
Likes: 11,496
Liked 2,650 Times in 1,083 Posts
Default

Quote:
Originally Posted by Pdxrealtor View Post
At the base of all the pins (hammer, trigger, etc) there seems to be a raised boss.

I usually debur/square up the base , polish, and shim but I've not seen the raised bosses at the base before.... That I can remember

Are these ok to debur and polish flat?

I wasn't sure if maybe because it's an aluminum airweight the pins may have raised bosses for added support or for another reason Im not aware of.
The raised boss keeps the steel moving part away from the alloy frame.
I've never heard of "debur/square up the base , polish, and shim" around the pivot pins. Is this a factory fix? I'm always interested in what's new.
Reply With Quote
  #5  
Old 01-11-2021, 08:34 AM
Hapworth Hapworth is offline
Member
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Mar 2012
Posts: 5,677
Likes: 3,705
Liked 5,557 Times in 2,428 Posts
Default

Quote:
Originally Posted by GerSan69 View Post
The raised boss keeps the steel moving part away from the alloy frame.
I've never heard of "debur/square up the base , polish, and shim" around the pivot pins. Is this a factory fix? I'm always interested in what's new.
Shimming hammer and/or trigger pivot pins is sometimes used as a gunsmith fix to square alignment that's out of true. Some tuners -- especially competition -- will do it to further slick an action; same for the deburring and polishing.

In an otherwise mechanically sound revolver, these are the farther reaches nuance in trigger tuning. I'm not aware that any is factory practice.
__________________
Pickpocket
Reply With Quote
The Following User Likes This Post:
  #6  
Old 01-11-2021, 11:39 AM
ken158 ken158 is online now
Member
Airweight jframe internal question Airweight jframe internal question  
Join Date: Nov 2005
Location: VA
Posts: 3,683
Likes: 1,006
Liked 2,887 Times in 1,288 Posts
Default

If you file down the “boss” area you will create additional friction on the hammer / trigger and end up having to put a spacer back in to eliminate that friction and obtain proper alignment. Don’t try to out engineer the engineers that designed your revolver...
__________________
S&W factory revolver armorer
Reply With Quote
The Following 4 Users Like Post:
  #7  
Old 01-11-2021, 03:04 PM
jcelect jcelect is online now
US Veteran
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Mar 2000
Location: Monroeville, Ohio,USA
Posts: 1,976
Likes: 470
Liked 2,962 Times in 821 Posts
Default

On the older guns, which didn't have the raised bosses, we used the trigger and hammer shims to center the hammer or trigger and prevent them from rubbing on the sides.
jcelect
Reply With Quote
The Following 3 Users Like Post:
  #8  
Old 01-11-2021, 03:09 PM
Protocall_Design Protocall_Design is online now
Vendor
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Jan 2010
Location: Kansas City area
Posts: 3,387
Likes: 15,261
Liked 5,650 Times in 2,096 Posts
Default

The raised bosses on the frame and sideplate keep the hammer and trigger from rubbing anywhere besides the pivot points.
__________________
Protocall Design
Reply With Quote
The Following 2 Users Like Post:
  #9  
Old 01-11-2021, 05:56 PM
JimCunn JimCunn is offline
Member
Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question Airweight jframe internal question  
Join Date: Jun 2018
Posts: 177
Likes: 45
Liked 129 Times in 64 Posts
Default

"or for another reason Im not aware of"

They are there to reduce friction.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Internal Lock Question JBTJ S&W-Smithing 13 11-22-2017 05:44 PM
Jframe question Worshipbass12 S&W Revolvers: 1980 to the Present 4 02-23-2014 11:45 AM
Internal Lock Question pineappleshooter The Lounge 10 01-17-2014 12:48 PM
Are the 638 Airweight models available without the internal lock??? 6pack S&W Revolvers: 1980 to the Present 5 10-09-2010 05:32 PM
Mod 29-2 Rebound Internal Rod Question dnonac S&W-Smithing 16 01-09-2010 10:40 PM

Powered by vBadvanced CMPS v3.2.3
smith-wessonforum.com tested by Norton Internet Security smith-wessonforum.com tested by McAfee Internet Security

All times are GMT -4. The time now is 04:31 PM.


Search Engine Optimisation provided by DragonByte SEO v2.0.42 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Smith-WessonForum.com is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)