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-   -   Testing accuracy of new torque wrench (https://www.bikeforums.net/bicycle-mechanics/623417-testing-accuracy-new-torque-wrench.html)

digger 02-22-10 06:04 AM

[sic] = word intentionally spelled wrong. Used by newspapers, for example, when quoting verbatim. I find it is used alot and I can't help but feel that it is typically a slight by the journalist to boulster the ego.....like Operator.

Metaluna 02-22-10 10:20 AM


Originally Posted by kamtsa (Post 10430125)
Digger, $35 will buy you peace of mind

http://www.teamtorque.com/documents/torquepricing.pdf

BTW, I bought this torque wrench this week. It looks like a rebranding of yours.

http://www.biketiresdirect.com/ppgtw..._wrench/pp.htm

Kam

The Park TW-5 also looks suspiciously similar to these wrenches.

http://www.parktool.com/products/big...9623_31111.jpg

The handle is shaped a bit differently, but it's the same torque range, and the calibrations on the knob look the same.

PlatyPius 02-22-10 10:31 AM


Originally Posted by Metaluna (Post 10435354)
The Park TW-5 also looks suspiciously similar to these wrenches.

http://www.parktool.com/products/big...9623_31111.jpg

The handle is shaped a bit differently, but it's the same torque range, and the calibrations on the knob look the same.

Those look nothing alike. You can see that the Park has a chromed head/ratchet mechanism with a flat gear cover, while the PRO Torque has a shot-peened type finish with a raised gear cover. Also, the Park has 2 screws to remove the ratchet mechanism while the PRO Torque uses a snap-ring.

kamtsa 02-22-10 10:32 AM


Originally Posted by digger (Post 10432442)
By the way, just what is that kid pointing at up there?

Torque wrenches of course.

Kam

kamtsa 02-22-10 10:59 AM


Originally Posted by digger (Post 10429842)
I don't doubt you, but just a question for my own clarification; if I grease the threads would that cause too little friction, so that as I tighten, the bolt is so...slippery that I overtorque before the torque wrench clicks?

The torque is still the same but the reloading is higher. The torque is used as an indirect measure of the bolt preload and the grease changes the relation between the two, causing an over tension.

Kam

digger 02-22-10 11:12 AM


Originally Posted by kamtsa (Post 10435546)
The torque is still the same but the reloading is higher. The torque is used as an indirect measure of the bolt preload and the grease changes the relation between the two, causing an over tension.

Kam

Ok so, if the seat post binder collar is plastic, then couldn't the same mechanics be at work here also? Causing over-tension?

tatfiend 02-22-10 01:59 PM

IIRC Snap On tool dealers have a torque wrench testing rig on their trucks or at least used to. If you can contact one he can probably check a torque wrench for a nominal fee.

Click type torque wrenches can easily go out of calibration, sometimes drastically. My brother had a Craftsman one do so years ago so he switched to using beam type torque wrenches. Beam type ones of decent quality are a lot more rugged as are good dial types.

helicomatic 02-23-10 02:03 PM

It's not plastic.

Am I the only one reading this?

mercator 02-23-10 02:39 PM

Jeez, this is better than some of the chain lube threads.
Almost as snarky as what you see in that other place :popcorn

Siu Blue Wind 02-23-10 08:27 PM

Enough bickering. Thread closed.


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