Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Torque wrenches

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

lwinger

Joined: 21 Jun 2006
Posts: 229
Location: Tustin, CA

Posted: Mon May 11, 2009 8:56 am Post subject: Torque wrenches

Based on advice from William Wynne, I invested in three different beam-type torque wrenches.  They are all relatively low cost and easy to see if the calibration is off (beam off center on scale).



For my engine and large bolts, I got two different 3/8" Craftsman beam torque wrenches. One is 0-75 and the other is 0-150 ft-lbs.



Because of the numerous AN3-4 bolts we fasten on our planes, with ranges as low as 20 inch/pounds, I got a KD 1/4" Fixed non-rachet beam torque wrench #2955.  It measures from 0 to 60 in-lbs and is relatively small to fit in tight locations.  For ranges over 60 in-lbs, it is easy to convert to ft-lbs (divide by 12) and use the next larger torque wrench.



I would love to go digital, but the level of care and need for calibration kept me content to go analog.

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

_________________
Larry Winger
Tustin, CA
Plans building 601XL/650 with Corvair
Installing fuel system
www.mykitlog.com/lwinger

craig(at)craigandjean.com
Guest

Posted: Mon May 11, 2009 4:31 pm Post subject: Torque wrenches

More torque trivia:



"For instance, did you know that your torque wrench-freshly calibrated by

someone traceable to the National Bureau of Standards-is not accurate in the

first 1/6th and last 1/6th of its range?  That's right:  a 100 ft.lb torque

wrench is accurate only over the middle 2/3 of its range.  So it should not

be used for anything outside of 16?84 ft?lbs!  Size the wrench to the job,

and don't fool yourself into thinking that you can just figure the

conversion from in lb to ft?lb, set that 100 ft?lb torque wrench to 3 foot

pounds, and have 36 inch?pounds.  No telling what you'll have, that far away

from the calibrated zone. "



http://www.vansairforce.org/articles/tips/tip_torque_bolts.html



-- Craig

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

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 vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum