Torque wrench + extension + socket ??
08-16-2011, 11:28 AM
#27
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Used as a lever extension, the material flexibility affects torque readings because when the lever flexes, the lever arm is shortened.
08-16-2011, 11:32 AM
#28
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Torque = Force x (perpendicular)distance. The extension doesn't matter. It's the length of where you apply the force that can help or hurt your torque. That's why we use long cheater bars to break loose a tight bolt, nut, etc. Using the same force, you increased the torque with a longer handle.
Wow, I just used my engineering degree!!
Wow, I just used my engineering degree!!
This is the answer.
08-16-2011, 11:53 AM
#29
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UM, there is a TSB that ups the recommended torque specs to 108ft/lb. So you RTFTSB 
http://www.finishlineperformance.com...2-04-1301b.pdf
http://www.finishlineperformance.com...2-04-1301b.pdf
08-16-2011, 07:44 PM
#30
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no. force changes with the length of the perpendicular arm. 100lbm of force on a 1' moment arm will yeild the same torque as 1 lbm of force on a 100' moment arm.
changing the length of the torque wrench will in no way affect the torque reading. ever. it will require less force to acheive the proper torque. thats it.
the wrench will click at the proper torque every time. its a moment, not a force measurement.
changing the length of the torque wrench will in no way affect the torque reading. ever. it will require less force to acheive the proper torque. thats it.
the wrench will click at the proper torque every time. its a moment, not a force measurement.
Last edited by deadphoenix52; 08-16-2011 at 07:48 PM.
it only applies to changes in the business end of the torque wrench
08-16-2011, 07:52 PM
#32
meh.
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you said the torque changes, it does not. the force does. they are not interchangeable.
08-16-2011, 08:41 PM
#33
right, using an extension bar would simply enable you to use less force to reach the desired torque.
to echo what most people have been saying, extending the length of the torque wrenchs lever arm will -not- affect the actual torque being put on the bolt.
to echo what most people have been saying, extending the length of the torque wrenchs lever arm will -not- affect the actual torque being put on the bolt.
Last edited by alz0rz; 08-16-2011 at 09:23 PM.
08-16-2011, 08:55 PM
#34
Okay guys i appreciate all the comments lol. Some of you are confused by what extension i mean. The extension that im using attaches to the torque wrench (it DOES NOT make the torque wrench longer, it goes perpendicular to the torque wrench) then the socket goes on the other end of the extension.
It looks like this :
http://www.canadiantire.ca/AST/brows....jsp?locale=en
It looks like this :
http://www.canadiantire.ca/AST/brows....jsp?locale=en
08-16-2011, 09:10 PM
#35
if you set the torque wrench to click at 100lbs of torque, it will still click at 100lbs of torque, regardless of extension length. the torquing force has nowhere to go besides the length of the extension to the bolt. as long as the extensions aren't so long that they are starting to twist off the perpendicular axis, all the force you are putting in on one end will get to the other.
08-16-2011, 09:47 PM
#38
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Ugh. Brain fart. A wrench extension won't affect torque readings either as a socket extension or force multiplying extension. I amend my posts prior that torque readings will only be affected in only the theoretical and impractical scenario of extending the lever arm on the socket side. Sorry.
08-16-2011, 09:51 PM
#39
alzor: I know i know i was saying extending the LEVER will make it inaccurate not using the extension.
dynamho: Dont be lol. I get it now. Only if you put an extension that will make the torque wrench longer will make the reading inacurate. Putting a socket extension will not.
Thanks everyone
Close thread
dynamho: Dont be lol. I get it now. Only if you put an extension that will make the torque wrench longer will make the reading inacurate. Putting a socket extension will not.
Thanks everyone
Close thread
08-16-2011, 09:56 PM
#40
alzor: I know i know i was saying extending the LEVER will make it inaccurate not using the extension.
dynamho: Dont be lol. I get it now. Only if you put an extension that will make the torque wrench longer will make the reading inacurate. Putting a socket extension will not.
Thanks everyone
Close thread
dynamho: Dont be lol. I get it now. Only if you put an extension that will make the torque wrench longer will make the reading inacurate. Putting a socket extension will not.
Thanks everyone
Close thread
08-16-2011, 10:11 PM
#42
Adding an actual socket extension.... I think it will change the torque readings. The extension will flex/twist, which has to affect measurements. Maybe it's too small to make any significant difference. I don't know. But let's picture a 20' long socket extension. We know that thing is going to twist/flex some while torquing a nut to 100+ftlbs.
You can extend the HANDLE of the torque wrench by 100 feet and the extensions from the head by 50 ft if you so desire so long as the handle lever and extension are perpendicular to each other (90 deg) the torque setting won't be affected.
The -ONLY- way to foul up the torque reading is actually -extending- the torque wrench at the head in a manner OTHER then the axis it was intended to go, which is 90 degree relative to the handle. SUCH AS THIS:
or this 
Last edited by alz0rz; 08-16-2011 at 10:13 PM.
08-16-2011, 10:20 PM
#43
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It will not change the amount of torque that is applied before it clicks!
You can extend the HANDLE of the torque wrench by 100 feet and the extensions from the head by 50 ft if you so desire so long as the handle lever and extension are perpendicular to each other (90 deg) the torque setting won't be affected.
The -ONLY- way to foul up the torque reading is actually -extending- the torque wrench at the head in a manner OTHER then the axis it was intended to go, which is 90 degree relative to the handle. SUCH AS THIS:
You can extend the HANDLE of the torque wrench by 100 feet and the extensions from the head by 50 ft if you so desire so long as the handle lever and extension are perpendicular to each other (90 deg) the torque setting won't be affected.
The -ONLY- way to foul up the torque reading is actually -extending- the torque wrench at the head in a manner OTHER then the axis it was intended to go, which is 90 degree relative to the handle. SUCH AS THIS:
Agreed, this is the point I was trying to state earlier, laziness set it.
08-16-2011, 10:29 PM
#44
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hahaha. if you decide to use a torque wrench like that then you dont belong any where near a car. yes that would affect it. but only the reading at the bolt. itd still click when you were torquing the handle of the wrench at however many footpounds. but since its on a different axis of rotation than the bolt, the final reading at the bolt would be unknown
08-16-2011, 10:57 PM
#45
hahaha. if you decide to use a torque wrench like that then you dont belong any where near a car. yes that would affect it. but only the reading at the bolt. itd still click when you were torquing the handle of the wrench at however many footpounds. but since its on a different axis of rotation than the bolt, the final reading at the bolt would be unknown
but alas let's let this thread die.
08-16-2011, 11:10 PM
#46
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It will not change the amount of torque that is applied before it clicks!
You can extend the HANDLE of the torque wrench by 100 feet and the extensions from the head by 50 ft if you so desire so long as the handle lever and extension are perpendicular to each other (90 deg) the torque setting won't be affected.
The -ONLY- way to foul up the torque reading is actually -extending- the torque wrench at the head in a manner OTHER then the axis it was intended to go, which is 90 degree relative to the handle. SUCH AS THIS:
or this
You can extend the HANDLE of the torque wrench by 100 feet and the extensions from the head by 50 ft if you so desire so long as the handle lever and extension are perpendicular to each other (90 deg) the torque setting won't be affected.
The -ONLY- way to foul up the torque reading is actually -extending- the torque wrench at the head in a manner OTHER then the axis it was intended to go, which is 90 degree relative to the handle. SUCH AS THIS:
or this Yup. That's the theoretical and impractical scenario I was trying to mention, but you said it way more clearly.
07-09-2012, 06:22 PM
#50
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I found an android app for calculating torque w/extensions
I used this awesome app that you can use to calculate the proper torque setting when using extensions. Hope this helps.
https://play.google.com/store/apps/d..._result#?t=W10.
https://play.google.com/store/apps/d..._result#?t=W10.