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Torque values?

Started by COP TZR, April 07, 2013, 08:55:49 AM

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COP TZR

April 07, 2013, 08:55:49 AM
I want to thank you helpful members for posting up such valuable information here. Im re-assembling my ride and the variation of torque values listed under the "Tutorials"  has me stumped.  For example the torque spec for a rear axle listed is from 70 to 76Nm.  Quite a variance.  Shouldn't it be one exact number?  Where should I set my torque wrench when I face variable values like this?

thanks,

ducpainter

#1
April 07, 2013, 09:09:01 AM
Do you have a SSS or a DSS?

If SSS use the number that aligns the clip hole between the nut and axle.

If it's dual just set it in the middle.

All fasteners have an acceptable range.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
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COP TZR

#2
April 07, 2013, 10:47:13 AM
Quote from: ducpainter on April 07, 2013, 09:09:01 AM
Do you have a SSS or a DSS?

If SSS use the number that aligns the clip hole between the nut and axle.

If it's dual just set it in the middle.

All fasteners have an acceptable range.

DSS.  I figured split it in the middle and not use the higher value and run the risk of snapping a bolt. 

ducpainter

#3
April 07, 2013, 11:18:48 AM
I doubt you'll snap the axle.

Strip a nut...perhaps.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Howie

#4
April 07, 2013, 11:26:26 AM
If your bike is a DSS, 16 mm. rear axle is 72Nm, 25mm. is 83.

COP TZR

#5
April 07, 2013, 02:34:52 PM
the rear axle nut was just an example.  There are several other listings for smaller bolts like brake rotor bolts, triple clamps, rearsets etc etc... that have a range for torque specs.  Im not concerned of snapping a rear axle, its the smaller bolts.

ducpainter

#6
April 07, 2013, 02:58:37 PM
I always use a middle value unless there's a pin hole to align.

Some things I don't torque.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Howie

#7
April 07, 2013, 08:07:06 PM
Unless it is a critical fastener the value is usually + 10% and even quality torque wrenches are within 2%, there is a bit of error built in.  Some things I tend not to use a torque wrench on, particularly pinch bolts and small fasteners, like those holding the side covers.  I do use a torque wrench more often than I did when I was a pro since my feel just ain't that good anymore.
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