Page 2 of 2 FirstFirst 12
Results 11 to 16 of 16

Thread: Actual vs measured barrel torque question

  1. #11
    Join Date
    Sep 2007
    Location
    AZ
    Posts
    27,217
    Feedback Score
    14 (100%)
    Quote Originally Posted by Dravur View Post
    Silly question. I had an army armorer tell me once that they just wrenched it down tight, backed it off, did it again, backed off again, and on the third time, tightened it to line up the holes. Now maybe he just had a "feel" for it, but is that a valid way to tighten the nut?
    YES. If you build them often enough like Iraqgunz, you can do that.
    "You people have too much time on your hands." - scottryan

  2. #12
    Join Date
    Oct 2011
    Posts
    457
    Feedback Score
    8 (100%)
    Quote Originally Posted by Iraqgunz View Post
    May I ask why you feel it is necessary?
    I thought it was necessary because I didnt have a true torque reading.

    BUT since its only about 37 ft lbs, Ill just leave it.

    My concern was really about it being too loose.
    Last edited by Swstock; 11-29-12 at 09:01.

  3. #13
    Join Date
    May 2006
    Location
    VA/OH
    Posts
    29,630
    Feedback Score
    33 (100%)
    Quote Originally Posted by Dravur View Post
    Silly question. I had an army armorer tell me once that they just wrenched it down tight, backed it off, did it again, backed off again, and on the third time, tightened it to line up the holes. Now maybe he just had a "feel" for it, but is that a valid way to tighten the nut?
    That is fine if you have a lot knowledge or "feel" for what 80ft LBS feels like.

    When I install a barrel nut, I use a cheater bar and the wrench/crows foot. I tighten and loosen the nut somewhere between 6-9 times. With the barrel nut LOOSE, I switch to my torque wrench and set it for 55-60FT LBS. I tighten down the nut.

    Doing it this way makes sure that I don't go over the 80FT LBS ceiling and that the threads are fully seated.



    C4

  4. #14
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,902
    Feedback Score
    104 (100%)
    The manual states 30-80 ft./lbs. which is to take into account the variances in threads and the design of the nut. If you hit 30 and it lines up-great. Then finish it off. If not then you will have to go more. But, if you have already gone past 30 and everything seems OK leave it alone.

    Quote Originally Posted by Swstock View Post
    I thought it was necessary because I didnt have a true torque reading.

    BUT since its only about 37 ft lbs, Ill just leave it.

    My concern was really about it being too loose.



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  5. #15
    Join Date
    Mar 2008
    Posts
    545
    Feedback Score
    0
    Quote Originally Posted by Iraqgunz View Post
    The manual states 30-80 ft./lbs. which is to take into account the variances in threads and the design of the nut. If you hit 30 and it lines up-great. Then finish it off. If not then you will have to go more. But, if you have already gone past 30 and everything seems OK leave it alone.
    This sounds like very good advice.

  6. #16
    Join Date
    Nov 2012
    Posts
    5
    Feedback Score
    0
    I got alot to learn. 30 to 80 seems like such a big margin.

Page 2 of 2 FirstFirst 12

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •