[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4601: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3764)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4603: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3764)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4604: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3764)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4605: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3764)
1911Pro.com • View topic - TR Trigger Job

1911Pro.com

The 1911 Forum For Professional & DIY Gunsmithing
It is currently Sat Jun 23, 2018 6:53 am

Board index » 1911s » Tutorials, "How To's" and FAQ's


Post new topic Reply to topic  [ 6 posts ] 
Author Message

Offline

Joined: Tue Feb 22, 2011 10:59 pm
Posts: 697

Post Posted: Mon Jun 01, 2015 5:55 pm 
Top  
I recently acquired a set of Chuck Warner's TR Sear Jig. TR being true radius. This is a concept for stoning the sear to the radius it pivots on and produces the only true neutral sear. When the sear is prepped as per the original specs it is actually slightly negative, and can also be angled to be positive. Much discussion has been done over this, and the radius idea has been discussed. Chuck Warner did something about it, and is producing center-less ground O-1 discs of the exact size, and hole needed to sandwich a sear, and stone it to match the radius.

The hammer prep is important as well and a huge variety of trigger pull feels and weights can be had. I started with a Nowlin hammer with .020"hooks, leveled in the manual way of stoning with a feeler gauge on the flat. The face of the hooks was also stoned and the tips given a slight radius. You can think of it as dulling the tips slightly.

The first thing I do with a new sear is lay it on it's side's on 1000 grit paper on a flat surface and do a figure 8, 4 or 5 times to remove any burrs and smooth the surface.



Here's the fixture discs and sear and sear pin.



I assembled them as per the directions that come with them. You use the sear pin to hold the sear between the discs and clamp in a smooth faced vise. The sear pin head isn't quite flush with the discs so when clamped it is held securely and can't turn when stoning.



A great hint in the directions is to draw a line with a felt tip pen across the discs and sear nose. This will give an indication of your progress when stoning down to the discs.



I had about a .001" or so of sear to profile so started with a fine India stone, and went just till I could see by the ink I was close.



A few strokes later and you can see the progress.



At this point I switched to the white ceramic stone to polish.



You will also stone/polish the discs, but is of very little consequence for future use. I think you could probably do 100 sears without appreciable wear.



You will notice a slight irregular escape edge until you stone a relief angle. This can be just a few strokes to straighten the edge, or 30% or more to shorten the pull.



At this point I assembled the sear with the nose inked, the hammer, and dry fired a few times to check contact.



Further stoning of the hooks can increase equal contact, but this only took about 10-15 minutes, and the pull is very nice and clean. More in depth tuning can be done, but this is a very impressive pull for the first time through. Smooth, and clean!

LOG

 Profile  

Offline

Joined: Thu May 28, 2015 6:03 pm
Posts: 10

Post Posted: Mon Jun 01, 2015 7:43 pm 
Top  
very informative this was the original jig, be great to see how the new one is different or refined too.

 Profile  

Offline

Joined: Sun Jul 28, 2013 2:45 am
Posts: 239

Post Posted: Thu Jun 04, 2015 2:50 am 
Top  
Excellent thread.

 Profile  

Offline

Joined: Sat Jul 28, 2012 11:48 pm
Posts: 158

Post Posted: Thu Jun 04, 2015 7:00 am 
Top  
Thanks Logman... you are always a fountain of great information! Will there be a sequel for the new and improved Warner TR Sear Jig?

Many thanks,
Todd

 Profile  

Offline

Joined: Tue Feb 22, 2011 10:59 pm
Posts: 697

Post Posted: Thu Jun 04, 2015 5:06 pm 
Top  
Sure here is a video of the current style fixture. https://www.youtube.com/watch?v=Ks5Bbw3Z7lk&app=desktop

This video gives a good look at the use of the TR Pro Jig. However as with most videos and many text articles there are inaccuracies and different opinions represented. One he suggests/says that with the traditional flat primary the sear must lift the hammer before breaking, that is only true if the sear was incorrectly stoned to begin with. Also he mentions that after the TR, the take-up, or pre-travel is reduced. The pre-travel of the trigger is miss understood by many, and the purpose of the TR jig is not to reduce the pre-travel, which is a required function of the 1911 single action trigger.

LOG

 Profile  

Offline

Joined: Fri Feb 25, 2011 1:38 am
Posts: 1983
Location: New Mexico

Post Posted: Wed Mar 02, 2016 6:07 am 
Top  
The methods for the new one are identical. You now have 4 radii from which to choose and a built in Secondary angle capability.



CW

_________________
https://www.facebook.com/elitewarriorarmament
https://www.facebook.com/Warner-Precisi ... 239866374/

 Profile  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

Jump to:  


Who is online

Users browsing this forum: No registered users and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group :: Style based on FI Subice by phpBBservice.nl :: All times are UTC [ DST ]