AN3 Torque ?

Discussion for builders, pilots, owners, and those interested in building or owning a Sonex.

Re: AN3 Torque ?

Postby EdW » Wed Jul 11, 2018 10:50 am

Remember, torque wrenches are precision measurement tools, and as such require periodic calibration. In certificated operation, 24 months is limit. How do wrenches get out of tolerance? Usage, dropping, usage, dropping, etc. Like the rest of us, they wear out.

Ed



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Re: AN3 Torque ?

Postby dallen » Wed Jul 11, 2018 11:28 am

Sonerai13 wrote:I use the torque table in AC 43.13 for my AN fasteners.

The torque wrench I have for the small stuff is a Snap-On. I have two actually. One is for really small stuff, 10 to 50 in/lb. The other goes from, I think, 40 to 250 in/lb.

Joe, Could you post "AC 43.13". I would like to see it.
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Re: AN3 Torque ?

Postby DCASonex » Wed Jul 11, 2018 12:24 pm

Another place to look for small torque wrenches is gun smith supplies. For AN3 and smaller, I have a small one that looks like a fat screw diver, very good for small places, and quick and easy to use. Be sure to check calibration. If no other known accurate wrench available, use a simple torque arm and weight.

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Re: AN3 Torque ?

Postby Bryan Cotton » Wed Jul 11, 2018 2:12 pm

dallen wrote:Joe, Could you post "AC 43.13". I would like to see it.
Dave
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Google can find it for you. You want to download the hardware chapter. It is an FAA document.
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Re: AN3 Torque ?

Postby dallen » Thu Jul 12, 2018 11:01 am

Got it thanks.
Dave
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Re: AN3 Torque ?

Postby radfordc » Thu Jul 12, 2018 12:10 pm

DCASonex wrote: Be sure to check calibration. If no other known accurate wrench available, use a simple torque arm and weight.

David A.


Here is a video of how I calibrate a torque wrench... https://youtu.be/jdhFqpLJKT8

This was a presentation made at one of the Midwest Sonex Fly-in's several years ago.
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Re: AN3 Torque ?

Postby Sonerai13 » Fri Jul 13, 2018 10:17 am

dallen wrote:Joe, Could you post "AC 43.13". I would like to see it.


http://www.marvgolden.com/downloads/dl/ ... xcerpt.pdf

A web search will find other similar links.
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Re: AN3 Torque ?

Postby pfhoeycfi » Tue Jul 17, 2018 6:43 pm

DCASonex wrote:Be sure to check calibration. If no other known accurate wrench available, use a simple torque arm and weight.

David A.


Thanks for those responses... ended up with a Capri, did the wight x arm test and it was right on...

Thank you,

peter
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