Torque Wrench Question (Split from another thread)

[Dean Pichon]

I have a couple of click type torque wrenches that I would like to get (re-)calibrated. Can anyone recommend a good source?

Thanks,

[WenEng]

Originally Posted by clutch22

... since we're kind of on the topic of torque ........ Would it be in my best interest to invest in a click type wrench or do you guys find this wrench sufficient?

You will not always be able to see the pendulum torque wrench value. Clicking works very well in those situations. I use the pendulum type and the Utica TS30 to validate each other when I am testing the dry resistance of the nyloc nuts. They both reflect nearly the same values so I am comfortable with the results.
Dry resistance torque on AN3 nyloc nuts I tested was between 6 and 9 in/lbs.
AN4, AN5, and AN6 nyloc nuts were about the same resistance at 15-18 in/lbs.
I add 8 in/lbs for AN3 , and 16 in/lbs for AN4,AN5, and AN6 nylon nuts to the required torque level when I set my click wrench. YMMV.

[Rupester]

I bought a 1/4" drive clicker style at the flymarket at OSH ...at one of those booths that sells all Made-in-China. It is worthless. The only time it clicks is when i drop it on the floor in disgust. So I bought a 1/4" drive pendulum style intended for bicycle shops ... good up to 70 in-lbs. It works great, but yes, at times it's VERY hard to see the scale. So I drew matching lines on the backside of the scale with a sharpie. Works great for a cheap-a** like me.

[Alan Bumbaugh]

I purchased this 1/4 drive dual scale 0-70in lb from McMaster Carr 5718A43 it currently is listed for 153.90. The dual scale has a peak indicator pointer which lets you see what you just applied if in a tight location. When it arrived the case stated CDI a Snap-On company. They also have 0-30 and 0-15 in lb for only 7 bucks more.

Alan

[Toobuilder]

Originally Posted by Noah

As a rule of thumb, torque wrenches are most accurate in the middle of their acceptable range and least accurate at the top and lowest 10%. For example, if a wrench is rated for 20 to 100 in-Lbs, it's least likely to be accurate below 28 in-Lbs and above 92 in-Lbs. Because of this, an assortment of torque wrenches is a good idea for a well stocked shop. See:
http://www.myturbodiesel.com/1000q/t...wrench-FAQ.htm

+1

And the click type also needs to be stored at the lowest setting, but no lower. Additionally, it should be "clicked" several times before use each day to lubricate the mechanism.

Finally, dropping on the floor or setting outside the normal range means a trip to the cal lab.