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CDI Torque wrench 1/2 Drive, 30-250 ft-lbs - $208 Amazon

  • Last Updated:
  • May 24th, 2018 7:51 pm
Sr. Member
Dec 3, 2010
701 posts
608 upvotes
Toronto
Suthek wrote: +1 to this.
People keep mistaking verification for calibration.

Calibrating is to correlate the readings of an instrument with those of a standard in order to check the instrument's accuracy.
....Emphasis on a standard.



A device used, such as a tape measure, would need to be therefore also certified to a standard (aka calibrated.)
And yes... you can calibrate a tape measure. (refer to definition above.)
Another torque Nazi (or should I say tape measure Nazi) who's got too much time to waste.
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User avatar
May 26, 2010
1798 posts
1184 upvotes
Eastern Canada
muffin_man wrote: Anyone with half a brain and simple instruments such as scale and measuring tape can do calibration at home.
Yup, that's what i do.
I put a bolt in the vise, set your torque wrench to desire ft-lb or what ever the unit you use.
A good scale(electronic)..,
Do different ft-lb measurement, you will get a small spec different..

In reality, that's what your expensive verification(edited ) equipment does for you...

And the torque wrench, got to be at room temperature before use.., if it's in un-heated shed, bring it in before use, and always release the tension on the torque wrench when you done with,

Sorry this was for the other guy with expensive calibrating equipment

re-edited it's to verify your ft-lb torque wrench only, not calibrating...

G**d d*** tablet auto-correction s***t lol
Last edited by fonzy35 on May 24th, 2018 4:29 pm, edited 3 times in total.
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Be Nice...
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Deal Addict
Apr 27, 2017
2085 posts
1541 upvotes
Vancouver
fonzy35 wrote:
And the torque wrench, got to be at room temperature before use..
The great thing about room temperature is that any room is room temperature.
I can have a room that's 10 degrees... or a room that's 40 degrees. They are all "room temperature".

That being said, you want to verify your device in the temperature you plan on using it in. (such as that shed?)
There's no sense in verifying your torque wrench at 21 degrees if you use it at minus 30 in Alaska.
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User avatar
May 26, 2010
1798 posts
1184 upvotes
Eastern Canada
Suthek wrote: The great thing about room temperature is that any room is room temperature.
I can have a room that's 10 degrees... or a room that's 40 degrees. They are all "room temperature".

That being said, you want to verify your device in the temperature you plan on using it in. (such as that shed?)
There's no sense in verifying your torque wrench at 21 degrees if you use it at minus 30 in Alaska.
Well, i won't use it if it's frozen, i think you missed the point..
Anyway, i don't won't to drag this topic any longer..
There's to many specialist or want to be out there with different opinion..

Thanks again Op for sharing your find
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Be Nice...
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Member
Nov 17, 2012
419 posts
143 upvotes
Le Gardeur
rabbitz wrote: Weird, is there suddenly a huge demand for high-priced torque wrenches?? Personally I use a $20 torque wrench I got from princess auto.... if it fails maybe I'll consider the $200 one lol! What's that saying? Buy cheap tools first and only expensive (i.e. high quality) ones after you break the cheap one!
This shouldn't apply to a precision tool like a torque wrench... if you care enough about having a specific torque, you want the tool to be as accurate as possible...
Sr. Member
Aug 16, 2009
716 posts
587 upvotes
Gutty96 wrote: Is this a serious question? Which do you think is better?

CDI torque products are made by snap on. I have been calibrating the tools in our shop for a decade now ( we make hydro transformers) and I can tell you that CDI is the only brand I buy and allow on the floor now. The junk at CT for under $100 doesn't even pass our calibration standard when new most of the time, let alone stand up to hundreds of breaks a day, for years without going out of tolerance like the CDI do.

My Gramma always said "we are poor, so make sure you buy expensive stuff". She was a wise old lady. :)
BS, out of the box CT and PA torque to spec for the most part.
My Power Fist ones from PA still torque to spec after non heavy use after 7 years. i.e used a few times a year.
If you are going to use it daily in a garage, ok go with the best.
Also with a 1/2" drive, come on, you can be over a pound off before it really matter.
It's not like it's a 1/4" drive where you are torquing valve heads.
Sr. Member
Aug 16, 2009
716 posts
587 upvotes
derass wrote: This is excellent testimony. Thank you.



A cheap torque wrench might be good enough for lug nuts and such. But not so if you're working on precision fasteners and delicate parts. Imagine stripping the threads on an aluminum cylinder head while torquing down new spark plugs. Or torquing down camshaft caps. Or timing components into the block. You saved $100 on the wrench, but now you need a $1000+ replacement part.

For tools like these, buy them once, buy them for life.
Agreed but what delicate work are most people doing with a 1/2" drive.
People need to add context.
This is more than adequate to change wheel and other things most people will use a 1/2" drive for.
Sr. Member
Aug 16, 2009
716 posts
587 upvotes
cf7777 wrote: Canadian Tire this week sale 69$..
Which is better?
What do you plan to use it for?
If your using it a couple times a year to torque your wheels, it doesn't really matter.
Sr. Member
Aug 16, 2009
716 posts
587 upvotes
Gutty96 wrote: If you just want if for seasonal tire changeovers, why bother at all? Anyone competent with tools will be as accurate by hand as the the cheap torque wrenches will get you.
Funny my 7 year old Princess Auto Power Fist torques are still in spec.
Moderate use.
Sr. Member
Aug 16, 2009
716 posts
587 upvotes
Suthek wrote: I think you have that backwards.
A high precision low accuracy device can be overcome with a conversion in your head.
If there's no precision, you can't do a calculation to resolve that.
Chart:
Image

I can do a correction to resolve that "high precision, low accuracy" target.
Very well putt. Digging the shooting reference.
Sr. Member
Aug 16, 2009
716 posts
587 upvotes
Suthek wrote: I think you have that backwards.
A high precision low accuracy device can be overcome with a conversion in your head.
If there's no precision, you can't do a calculation to resolve that.
Chart:
Image

I can do a correction to resolve that "high precision, low accuracy" target.
Very well putt. Digging the shooting reference.
Deal Expert
Jun 24, 2006
15768 posts
11164 upvotes
Dandada wrote: Funny my 7 year old Princess Auto Power Fist torques are still in spec.
Moderate use.
How did it go from a non heavy use a few times a year in your first post, to moderate use in this one? Interesting inconsistencies.

I have had torque wrenches from Princess Auto and CT in my shops. Neither brand survived more than a couple weeks. Sorry to disappoint your purchase.

On that note, how do you know they are still in spec? I have had ones brand new from those places that could not meet industry standards.
Deal Addict
Sep 8, 2017
4695 posts
4968 upvotes
GTA
Dandada wrote: Agreed but what delicate work are most people doing with a 1/2" drive.
People need to add context.
This is more than adequate to change wheel and other things most people will use a 1/2" drive for.
You're right, I should have been more clear. I'm currently in the market for a 0-20 lb-ft torque wrench (either 1/4" or 3/8" drive, not sure yet), and I saw OP's link had also had those kind of offerings apart from the 1/2" in the title. So I suppose that was on my mind when I wrote that post.

So yes, I agree. As I said in my OP, a cheap wrench is probably fine for torquing wheel nuts, but I would not trust one to do precision work.

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