Flexible Socket Extension
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Tourer
Joined: Oct 2009
Posts: 374
Likes: 15
From: Alberta, Canada
Flexible Socket Extension
Will using a flexible socket extension on a torque wrench affect the torque value? I've noticed, when accessing hard to reach things like the front exhaust fittings, that the extension will start to 'twist' before the torque wrench 'clicks' on the desired setting.
Thanks, in advance.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
yes, you are correct.
a flexible extension is good for "running" a nut into place.
a set of crows feet will hit many of the hard to gets
not this set, but look like the photo if you are not familiar with the term
http://community.craftsman.com/Craft...et-review-a4bb
even a straight 6" extension will flex and "store" energy rather than transmit it to the fastener--- somewhere in my shop i have a chart with offset values when using extensions
with header ( and most fasteners) use the lower end of the torque value so as to minimise thread wear/bolt stretch and chances of breaking
mike
a flexible extension is good for "running" a nut into place.
a set of crows feet will hit many of the hard to gets
not this set, but look like the photo if you are not familiar with the term
http://community.craftsman.com/Craft...et-review-a4bb
even a straight 6" extension will flex and "store" energy rather than transmit it to the fastener--- somewhere in my shop i have a chart with offset values when using extensions
with header ( and most fasteners) use the lower end of the torque value so as to minimise thread wear/bolt stretch and chances of breaking
mike
Last edited by mkguitar; Mar 13, 2012 at 01:59 PM.
Road Warrior
Joined: Nov 2008
Posts: 1,296
Likes: 3
From: Cheltenham, UK
Apart from the flex in the unit itself (which is absorbing energy and therefore reducing torque on the bolt) the fact that you are using a flexible extension implies you can't get straight on the bolt.
As you are turning at an angle instead of straight on (make sense???) the torque applied via the torque wrench is split between turning the bolt and tending to shear the flexible joint. The greater the angle the greater the error. Sadly that is a law of basic physics that is independent of the quality of the tool etc!
As you are turning at an angle instead of straight on (make sense???) the torque applied via the torque wrench is split between turning the bolt and tending to shear the flexible joint. The greater the angle the greater the error. Sadly that is a law of basic physics that is independent of the quality of the tool etc!
Outstanding HDF Member
Joined: Jul 2010
Posts: 2,727
Likes: 6
yes, you are correct.
a flexible extension is good for "running" a nut into place.
a set of crows feet will hit many of the hard to gets
not this set, but look like the photo if you are not familiar with the term
http://community.craftsman.com/Craft...et-review-a4bb
even a straight 6" extension will flex and "store" energy rather than transmit it to the fastener--- somewhere in my shop i have a chart with offset values when using extensions
with header ( and most fasteners) use the lower end of the torque value so as to minimise thread wear/bolt stretch and chances of breaking
mike
a flexible extension is good for "running" a nut into place.
a set of crows feet will hit many of the hard to gets
not this set, but look like the photo if you are not familiar with the term
http://community.craftsman.com/Craft...et-review-a4bb
even a straight 6" extension will flex and "store" energy rather than transmit it to the fastener--- somewhere in my shop i have a chart with offset values when using extensions
with header ( and most fasteners) use the lower end of the torque value so as to minimise thread wear/bolt stretch and chances of breaking
mike
There is no picture. I feel cheated.
Road Warrior
Joined: Nov 2008
Posts: 1,296
Likes: 3
From: Cheltenham, UK
The problem comes with a flexible joint where there is an angle in the extension.
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