VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-14
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 08-03-2014, 09:38 PM
flywade flywade is offline
 
Join Date: Feb 2014
Location: West Columbia, Texas
Posts: 13
Question Empennage attachment assembly torques

With the new nuts for the AN-3 was 28in lbs and AN4 was 85in lbs do you add 14in lbs for the new nuts?
__________________
2014 dues paid
2015 dues paid
2016 dues paid
RV 14 ser number 140146
N225DM reserved
Emp 90% done
Wing 95% done
Fuselage 50% done
Reply With Quote
  #2  
Old 08-06-2014, 01:36 PM
RobB52 RobB52 is offline
 
Join Date: Nov 2013
Location: Shreveport, LA
Posts: 55
Default

I added 14 inlbs for the friction of the locknut. I got that from section 5 of the plans where it discusses torques. Not clear from the table since the locknut column has a higher number to begin with, but the paragraph above the table says to add the 14 inlbs.
__________________
Rob

RV-14 Flying
EAA Chapter 343 (DTN)
Shreveport, LA
Reply With Quote
  #3  
Old 08-06-2014, 03:13 PM
BobTurner BobTurner is online now
 
Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
Default

Measure the running torque of the locknut with a fishscale; add that to the recommended bolt torque.
e.g., AN4 torque should be 50 to 70 in-lbs. If the torque needed to keep the nut turning (not tight yet, but all threads engaged) is 14 in-lbs, then use 64 to 84 in-lbs as the final setting.
Reply With Quote
  #4  
Old 08-06-2014, 06:35 PM
n982sx n982sx is offline
 
Join Date: Apr 2010
Location: Chicago, IL
Posts: 356
Default

Quote:
Originally Posted by BobTurner View Post
Measure the running torque of the locknut with a fishscale; add that to the recommended bolt torque.
e.g., AN4 torque should be 50 to 70 in-lbs. If the torque needed to keep the nut turning (not tight yet, but all threads engaged) is 14 in-lbs, then use 64 to 84 in-lbs as the final setting.
Or use a beam torque wrench. This is a good reason to have a beam torque wrench along with the clicker kind. Fully engage the nut and then look at the scale on the beam torque wrench while turning. It shows you the run on torque very nicely.
__________________
Bob Meyers

Built and Flying RV-14A N626KM SN 140093 http://n626km.com
Built and Flying Sonex N982SX http://n982sx.com
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 11:44 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.