Does the extension on a torque wrench change the actual value of the torque placed on the nut? Ex. spark plug.
Not talking about swivles, I know that can.
Not asking about extension on the wrench handle either, that would be wrong.

 

If you are just sticking a piece of pipe on the handle so you (as the user) can apply more force to the tool, no, it won't change the ability to get a desired torque on a fastner. And adding an extension between the socket and the drive head of the wrench (a so-called socket extension) to extend the reach of the tool won't negatively affect the performance of the tool, either.

The tool must be used properly in either case to get accurate results, but the torque wrench's ability to deliver correct results in accordance with the settings on it won't be diminished. If the tool is the so-called beam-type torque wrench, again, no, you shouldn't have a problem as long as you work carefully.

 

in theory no, but if the axis is shifted it may reduce the load slightly. Alignment and care should give you a +95% result. If you were turning a fixed axis the load would transfer directly. The joints at the two couplings of the wrench / extension may allow the slight shift in the axis load.

 

In theory NO. As long as the extension is stiff enough there will not be a significant enough drop in torque value as absorbed in elastic deformation.

 

Smart group, thanks.