torque value changes
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Yes, I understand it will change. I'm sorry but I don't know how much, but perhaps this web site will help:
http://www.specialpatrolgroup.co.uk/...ue/torque.html
http://www.specialpatrolgroup.co.uk/...ue/torque.html
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
That's funny, it works fine on mine. I did a Google search under "torque changes extention bar". You should be able to find something there. Anyway, that site had a formula for making the adjustments for extention bars and other tools.
Instructor
Joined: Dec 2006
Posts: 167
Likes: 0
From: Oxnard/San Luis Obispo CA
If you are talking about an extension or adapter or whatnot its not gonna change the reading, but if you make the handle longer or shorter it will.
In the situation of a torque wrench torque= force x (the perpendicular distance) or the length of the handle. Changing the parrallel distance (ie the # of extensions, adapters, etc.) does nothing to the torque
In the situation of a torque wrench torque= force x (the perpendicular distance) or the length of the handle. Changing the parrallel distance (ie the # of extensions, adapters, etc.) does nothing to the torque
Drifting
Joined: May 2004
Posts: 1,442
Likes: 2
From: Flanders NJ
If you have a torque wrench on the bolt and use an extension on the handle of the torque wrench it will not change the torque at the bolt it will take less force at the end of the handle extension to get the torque reading you want. The wrench still reads what the torque at the bolt is.
Pro
Joined: Mar 2001
Posts: 633
Likes: 1
From: Hamilton, ON, Canada
This has come up before and someone mentioned that using an extension will increase torque required to achieve the same bolt tightening. I don't agree and can't see how it could possibly change the torque value. There are no friction losses, goemetry remains the same re torque arm. Im positive the torque required to achieve the same bolt stress is the same regardless of the length of the extension.
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Instructor
Joined: Dec 2006
Posts: 167
Likes: 0
From: Oxnard/San Luis Obispo CA
In my opinion the answer is yes, the torque will change. Will it be measurable with a 18" length extention, 1/2" drive set tightening head bolts. I don't think so.
Intermediate
Joined: Aug 2003
Posts: 28
Likes: 0
From: henrietta texas
If you are using a extension that is vertical to the TW square drive then it will not change the reading. If you are using something that changes the overall length of the torque wrench, such as a crowsfoot wrench, then the reading will change. For details of the formula to calculate the reading change setting see the web sites below.
Go to http://www.cditorque.com and click on the FAQ's tab. If you are interested go to http://www.hti.org and click on list of manufactures which shows all the major tool manufactures, what they make and what brands they own. Many of them have their web sites listed and also they have complete online catalogs.
Go to http://www.cditorque.com and click on the FAQ's tab. If you are interested go to http://www.hti.org and click on list of manufactures which shows all the major tool manufactures, what they make and what brands they own. Many of them have their web sites listed and also they have complete online catalogs.