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Old June 29th 09, 06:25 PM posted to rec.aviation.homebuilt
jerry wass
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Posts: 180
Default Torque Wrench Calibration

Bill wrote:
Make it so that you can pull the torsion bar wrench with the snap on--
against each other. They should read the same.

How could the torsion wrench be off if it zeros properly and nothing
in the ponter binds?

Bill Hale Loveland CO


You are correct for a bending rod type wrench--but some torque wrenches
have a spring loaded(adjustable)hollow handle that allows a piece to pop
out of a Vee notch making an audible click that is also felt in the
handle--(very handy for torquing where you can't see the dial or
pointer. Jerry


On Jun 25, 12:39 pm, wrote:
I was getting ready to install a replacement manifold on the old Mercury
and it occurred to me I ought to be pretty sure my torque wrench didn't
strip the aluminum threads. The Snap On dial wrench hasn't been
recalibrated for 30 years and the Craftsman torsion bar wrench is too
clumsy to get to some of the bolts. I was kicking it around and I came
up with using the torsion bar wrench on a bicycle axle nut and then
putting the dial wrench on it to see if the reading matched. It did.
Then, I went ahead and checked the Craftsman clicker wrench of the same
vintage and recalibrating, and it came up with a match also. Then I did
the torquing with the dial wrench and cross checked it with the torsion
bar wrench, with all good readings. So, I'm just going to call them
calibrated.
Andy
Phoenix