Torque Wrench Calibration

[Superman]

I went to the airport maintenance folks and came upon a business that builds custom airplanes and also certifies torque wrenches for aviation purposes. They have a 'test block.' They tested my (very cheap, Harbor Freight) torque wrenches. These wrenches were all within 5 lb/ft, and at certain readings they were close to perfect. This place does not adjust them at all, they just test and certify.

So, now I know how accurate they are, and also what adjustments to make in order to apply the exact torque. This helps me feel better, knowing how they perform. Those guys did this testing for me for free.

I'm posting this just for everyone's information. Finally, they said that aviation spec includes anything that is within 4%. FWIW

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'83 SC

[Roland Kunz]

Hello

Hehe it even works in america. Wrenches are the best buddys worldwide.

OK the cheap tourqe wrenches are not so bad when they are new. but if you use them often or "hard" they will get softer and undertourqe.

Nope problem if you use it once a month but profs use it every day and have to trust them.

Also only the engine needs exact metering. The cv joints, rims can get +-10% without problem.

Grüsse

[Planter91C2]

thanks for posting this. i just got a 10 to 150.lb torqe wrench that was on sale at harborfreight for only $9.99 and was worried it would be innaccurate i think its pittsburg tools. now i can use it and not be scared.

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Daryl 964 Targa

[Rufblackbird]

Hmm...am I to assume that my $50 Husky (from Home Depot, before I knew about Harbor Freight) is longer lasting? It isn't a $200 Snap-On but it should last, right?

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Jeff
1976 911S