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06-22-2020, 05:45 PM
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Join Date: May 2020
Location: West Linn, OR
Posts: 148
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Torque wrench
I'm installing the inboard hinge bracket on the vertical stabilizer, and it uses AN365 self-locking nuts. According to the directions, they should be torqued to 2.3 foot pounds. I don't think that my torque wrench is precise enough to set this, but most of the torque wrenches that I see for sale start at 5 foot pounds. Am I misinterpreting the instructions, or do I just need to keep looking for a torque wrench with lower settings?
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06-22-2020, 05:56 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 16,313
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__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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06-22-2020, 07:06 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 8,164
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Quote:
Originally Posted by Mike S
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Not to undercut Mike (but here goes), you should set it at 25 to 30 in lbs PLUS the ?running torque? (what it takes to overcome the drag of the locking mechanism). I generally used 30 in lbs setting.
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06-22-2020, 07:42 PM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 5,255
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I use a 1/4" beam-type torque wrench to measure the running torque. Then since it's already set up and on the nut, I continue and use it to establish the torque.
Dave
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06-22-2020, 08:20 PM
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Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 1,131
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Look up on Amazon ?CDI dial type torque wrench? you want the 1/4 inch drive, and the appropriate range. CDI wrenches are the people who make them for Snap-on, so you are getting the quality without the price.
__________________
Tom
Las Vegas
RV-4 flying…
RV-8 empenage finished 10-2020
Wings Started.. 11-2020
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06-22-2020, 08:22 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 16,313
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Quote:
Originally Posted by Taltruda
Look up on Amazon ?CDI dial type torque wrench? you want the 1/4 inch drive, and the appropriate range.
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Also called a "Torque Watch"
Hold your breath when looking at the price 
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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06-22-2020, 09:13 PM
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Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 1,131
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They are really, really nice quality, and the 1/4 drive versions are less than $150.. a bargain for a precise instrument!
__________________
Tom
Las Vegas
RV-4 flying…
RV-8 empenage finished 10-2020
Wings Started.. 11-2020
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06-22-2020, 09:36 PM
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Join Date: May 2020
Location: West Linn, OR
Posts: 148
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I wish I wasn't such a sucker for nice tools. Order placed.
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06-23-2020, 05:37 AM
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Join Date: Jul 2011
Location: Cypress, TX
Posts: 481
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I bought one of these for my bicycles but found many uses on the RV. There are much cheaper ones on the market but not at this quality.
http://https://olsatools.com/products/torque-screwdriver
__________________
RV14A #140083
Flying! 8/12/19
2022 Donation
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06-23-2020, 10:02 AM
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Join Date: Jan 2006
Location: Vonore, TN
Posts: 559
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And if you use a "click" type torque wrench, on the smaller AN3 bolts you may not hear the click at 25 to 30 in-lbs., the ratchet head of the wrench will just gently flex and touch the handle. Broke off my first two AN3's on the empennage years ago because I expected a noise and just kept cranking.
__________________
John Tierney
Vonore, TN
RV-7A - N777JT Flying
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