Let's say I have a 1/2" drive torque wrench. If I use a 3/8" adapter would make the reading inaccurate? Same question for click style torque wrech. Could the accuracy of the click be jeopordized?

 

no, doesnt affect the reading when u are using drive adaptors

 

If an adapter is attached to the square drive of a torque wrench, the wrench will not give the actual torque indicated by the setting of the handle. A simple formula however, allows you to figure out what the setting should be to deliver a pre-determined amount of torque at the end of any adapter to the fastener.

Here is the formula:


The letters in the formula have the following meaning.

A = length of torque wrench
B = length of adapter
C = torque wrench setting
D = desired torque at end of extension

 

pretty interesting forumla. I'll have to try that out.

 

No the reading will be correct. What the other post is talking about is if you extend or shorten the length of the torque wrench with any fitting you will need to compensate the measurements for that, but with a regular extension/adapter you are not changing anything since the adapter/extension is centerline with the head of the torque wrench.

 

why stress around with a formula when you can just put the extension on the wrenc at a 90 deg angle. that eliminates the area B and you get C=D

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mh &raquo;</TD></TR><TR><TD CLASS="quote">why stress around with a formula when you can just put the extension on the wrenc at a 90 deg angle. that eliminates the area B and you get C=D

</TD></TR></TABLE>Exactly. But sometimes it's harder to reach when you've got the adapter at 90 degrees to the handle. Plus you have to be careful NOT to push/pull the handle because now that can change the torque.

Besides, that formula isn't all that stressful, is it?

 

mayby not stressful, but i do have to stop and think,.... i don't like that