"If you don't have a vise... well, I don't know, go buy a vise. Come on, you need a vise. Everybody needs a vise" - Classic. LMAO.

@mrtechpat

6 жыл бұрын

Skyler Hitz reminds you of Back to the Future 2 “Buy a safe”

@Litehamer

6 жыл бұрын

Skyler Hitz it's also so true.... I off to buy a vice

@alfanydiaz8095

5 жыл бұрын

Skyler Hitz When I heard that, I said this vid is going to be good and "accurate"!!! 😂😂😂 But I hit the like button when he said store your t.w. at the lower settings to keep them nice and accurate. I like when pple know what the heeck they talking about!!

@Jim-ie6uf

5 жыл бұрын

Skyler Hitz how about a couple of vices?

@Patrick94GSR

5 жыл бұрын

lol came here to see if "safe" was mentioned. lol "got a safe? nah nah you don't have a safe. GET A SAFE! Keep it locked up!"

I never had what I thought was a need for a torque wrench, but recently I've been adding tools to my supplies. I've also been trying to pay attention to the proper way of rebuilding or assembling things on my vehicles and equipment. I really appreciate how simple you explained how to properly use and calibrate a torque wrench. Thank You!🤠

Up next how to calibrate a luggage scale using a torque wrench. Thank you for posting!

@leehaelters6182

5 жыл бұрын

EXCELLENT!

@mobeydick37

5 жыл бұрын

Use 4 milk/water jugs filled, should weight 33.36 pounds.

@johngreene6783

4 жыл бұрын

LOL - Awesome

@tksf

4 жыл бұрын

It’s like calibrating a force gauge, you need at least Class F weights 😜

@jaypuck6912

4 жыл бұрын

And that's a darn good point. Which is more accurate? The $5 scale or the $40 torque wrench? Good video, but he didn't mention that he verified the operation of the scale with something of known weight, like an exercise weight or jug of water.

Great video! Ive never use a torque wrench when tighten my bolts but was advised to start. I started with this to understand the maintenance first. You broke it down and made calibrating easier and simple to understand. Thanks!

This is the BEST torque wrench calibration video ever! I just confirmed that my 1/2" Harbor Freight wrench was spot on with the rating and my 3/4" was 3-4lbs high. I adjusted the wrench and now it is spot on too. A few tips: 1. Might need a grip of some sort on the handle when undoing the large nut. I used a locking plier with a towel to avoid marring the handle. 2. If you dont have a place to test this, you can use your lug nuts. They are normally 80-90ft/lbs so testing at 30-40 on these you will never be able to overtorque. I used two scale to ensure accuracy.

@waltp3373

2 жыл бұрын

I used lugs nuts but I didn't take into account the weight of the handle.

@BikerGirlTraveler

2 жыл бұрын

Best? Funny! It’s so flawed it’s comical!

@absingh916

2 жыл бұрын

@@BikerGirlTraveler How would you have made it better?

@shanzhu8888

Жыл бұрын

@@waltp3373 keep the handle vertical to avoid the effect of the weight.

@videomaniac108

7 ай бұрын

You only need to do that if you orient the handle horizontally. If you orient it vertically you don't have to worry about the handle weight, as its contribution to the torque is zero. If you want to know how to calculate the torque contribution for a horizontally oriented wrench is let me know.@@waltp3373

A great video that combines a simple method with solid math and just enough depth into the subject to leave everyone walking away understanding rather than knowing.

Awesome job! Super informative but not boring. Nice pace. Easy instructions. Good work!!

I watched several torque wrench calibration videos but I found this to be the most informative and easy to follow.

Very useful video, just did this today! Just one note: keep in mind that every time you adjust the torque, the wrench itself shortens or lengthens. This will affect your final readings. As in your videos, both my torque wrenches have that groove on the handle 0:45 and I always pulled from there BUT every time I adjusted the values, I measured the distance from the top to the groove. From high values of torque to lowest setting you could have 1cm difference or even more in length which is enough to off-put your readings . Other that this, the video is very informative! My big torque wrench of 210nm was off by more than 20% and with your help now it is within the spec of +-4%. The 25nm little wrench was within spec, it did not require calibration, but it is way less used compared to the big one. Also a big must, test the scale first. If the scale is not good, then everything will be wrong. I used my dumbbell weights and it was spot on. Considering it was an old 60kg spring loaded scale; was a bit hard to read but it did the job perfectly. As you said in the video, start with a medium setting; if it goes to 200nm, start with 100nm and go from there, and do at least 3 measurements low-med-high torque. Cheers!

As a DIY'er, I feel confident that a method such as this is sufficient for my needs. Thank you for the well thought-out demonstration and explanation!

Thank you for keeping things simple and very easy to understand!

This was a great video. It gave me the EXACT information I was looking for with no questions. That’s why I liked this video. My Torque Wrench was set 50 foot pounds out of spec straight from factory. I mean would did the quality check. Thanks for the help. 👍👍👍

How do we know the luggage scale is properly calibrated?

@NidaleeisBAws

7 жыл бұрын

Yes, if your going to do this you'd better make sure that you have an accurate scale.

@RossDuClair

7 жыл бұрын

use the luggage scale to measure a known weight: a bag of flower, or something heaver. Then that that known weight to a UPS or other store that ships things. Put on that scale and compare. Easy.

@ivanboesky1520

7 жыл бұрын

Easy, weigh a known quantity on it. A weight, a product from the supermarket, etc...

@ivanboesky1520

7 жыл бұрын

The FDA requires that food goods be reported with accurate weights on the package. Take a couple of products from different makers and weigh them. This stuff is pretty simple kids. LOL

@jwgmail

6 жыл бұрын

How do you know the tape measure is calibrated? maybe it says 23 inches but it's actually like 9 feet? i hate when that happens

Thanks for sharing this video. I would like to recommend to verify calibration at least at three different points of the scale: 25%, 50%, and 75%. I have a torque wrench that can be calibrated at one point, but the rest of the scale is out of calibration by more than 45%. This happens when the spring K value does not match the scale. It is a manufacturing problem that can not be detected by one point calibration.

@rickprice5143

Жыл бұрын

I no longer fear the torque wrench, or long for a digital torque wrench. That part is not true but thanks for lifting the fog.

Totally Logical, Very well articulated, Very clear presentations!!! Well Done!!! Great work!

Best easy to understand video for simple torque wrench calibration! THANKS!!

Thorough explanation. You made it easy. I don't have my vise bolted down so I tried this using a lug nut on my car and that worked. It was a bit harder to read the numbers but I think that was because of the angle and the numbers weren't high contrast. Also, liked that you showed how to adjust the instrument if out of calibration.

@JordyValentine

7 жыл бұрын

Just curious, how do you use a vice that's not bolted down? Doesn't it move around/fall over when you try to use it?

@pighater951

7 жыл бұрын

TacticalBBQSauce its bolted down😞😞

@antman5474

6 жыл бұрын

tjzekes ....excellent idea

I am a calibration technician first off you should be warming up the mechanism on the inside of the torque wrench 5 times at 100% then do your 20% 50% 100% for a linearity check. Because if you require adjustment lets say your top end high and your bottom end is low but your mid point is fine you have a span error which is what the adjustment screw is on torque wrenches its like a see saw raise the top and the bottom lowers. Lower the bottom raise the top. And let's say your entire range is out by the same amount. Then you do a scale adjustment buy either adding washer on the side on the wrench to apply more torque or if your device has a scale you move the scale to correct your error.

@Dave-pu9zs

5 жыл бұрын

I'm also a calibration technician and you are spot on. I have to laugh when I see these videos. But dickheads like this keep me in a job.

@jlmealer2091

5 жыл бұрын

@@deseremere A torque wrench in the anus? That's a new one.... Makes me worry about the spatula at a restauant now and where it's been in the after hours of the day.

@mooglemy3813

5 жыл бұрын

Kieran. I get calibrating precision instruments and electrical meters and so on. That is required for testing and continuity of standards and so on. But please answer me this. This is a DIY calibration on a HF torque wrench that sells for $10 or so. It's made in Taiwan and generally they make good tools and stuff comparable to Japan and over here. That's why not make it in China. It had a + - 4% accuracy that is OK for a home owner use in general. By not using the procedure you mention and perform for precision instruments how inaccurate would this be? Say on the 12" torque wrench it's out by 5 lb ft. And its corrected as shown. Would a ball park figure suffice for this scenario. Precision tool calibration is essential to confirming and keeping to standards as well as repairs and testing. But if it gets corrected to close to the 4% variance then for home owner DIY use should be acceptable. Thanx for explaining it. I have had to use the methodology you explain and its essential for AC Generator certification and testing. An out of date certified tool or meter or whatever can't be used for standards or testing due to it not being deemed accurate and over the 1 year calibration limit.

@EagleKeeper86

5 жыл бұрын

Where I work we are required to “break” the torque wrench we checkout of the tool crib using sockets welded to the wall. You set the torque wrench to its max setting and break it 3 times. Someone told me it lubricated the inside of the torque wrench, who knows. But if you are having a task evaluation by QA and forget this step it fails you from the start so I guess it’s pretty important.

@kieranbrunker8779

5 жыл бұрын

@@EagleKeeper86 hey man when u break the torque wrench all you are doing is warming up the mechanism on the inside thats part of the calibration winding said wrench to 100% and cracking it five times because the first couple of times it breaks the reading can actually be to high and out of spec. Also never leave the torque wrench wound up anymore then 10% of its range you can damage the tension spring. Some times u can unwind let them rest for 24hrs and they will be fine.

Awesome video. Concise clear and easy to understand. Thanks for this.

Thank you very much Garage Geek. Incredibly simple, yet very good method for home calibrating torque wrenches.

thanks alot! more than enough for my hobby :) one thing, you can clamp the wrench directly in the vise, no need for a socket

@liveliife999

5 жыл бұрын

Stephan Martin yeah but I don’t wanna damage my tools unnecessarily..Thad why you put the damn socket on

@jonpram1737

3 жыл бұрын

I wouldn’t clamp the wrench, sockets are cheaper & it’s unlikely you don’t have a socket if you have a wrench. Tbh I don’t want to scuff up my sockets, so I just did it by screwing a bolt into a piece of wood, but you could also just tighten absolutely anything you don’t care about stripping the thread on. The vice isn’t really needed at all, but I guess it’s easier if you have one about

00:31 You can use wheel lug nuts to hook up you wrench and you don't need a vice!

@cecewd405

2 жыл бұрын

That's what I intend to do.

@richardsirois6975

2 жыл бұрын

If the wheel is horizontal, yes. If it is not, you have to compensate for the action of gravity. Gooood luck.

Very good vid I will definitely use this knowledge in order to keep my torque wrenchs calibration correct when needed. Thanks for sharing

I like the way you go into detail. You explained it very well, just the way I prefer it.

This is awesome, I just given a new-old stock torque wrench and while I don't need super accuracy for my basic DIY car repairs, being able to see if it has deteriorated over time would be really useful.

Click wrenches are generally accurate to 4% of the scale. So 35 ft lbs *4% = 1.4 ft lbs. Okay. You need to calibrate. But, because it is a multi-point torque wrench, you need to calibrate multiple points. The standard is 10% to 100% of the range, with 3 equal points in between. That way you can know if the spring is warped in one section compared to others. Also, make sure the scale you're using is accurate before you measure something else with it.

@jesusherrera2749

5 жыл бұрын

Herbert Wingfield post made sense to me

Outstanding instruction! Keep it going, it's pure moto. I appreciate your time and the humor. Semper Fi

Great video. Clear detailed explanation that addressed all questions and issues for this weekend mechanic anyways!

Awesome video brother

Brilliant, low cost, effective way to measure and calibrate a torque wrench! Kudos on a simple yet effective method of doing what would otherwise cost a significant amount more from a calibration house. The fact is that most people probably don't realize that a torque device can deviate over time and not provide the intended value. Most people buy a torque tool and never have it calibrated and over time this could lead to over-tightening or under-tightening of a fastener, either of which can be an issue depending on the application. I think the only thing I would do differently is measure from three areas of the tool's range, low/mid/high, to confirm that the torque value is consistent throughout the range of the tool. Now i'm gonna go buy a luggage scale haha!

Nice presentation. Have a couple of torque wrenches that I’ve inherited and knew nothing about how to use / maintain. Thanx for the help! Keep ‘em coming! 👍🏼👍🏼

Great Video Well explained - and the bit out the errors introduced when off square is very practical in that it says with a good line of sight right angle force applied, the %error is small. Also the valid point below regarding the luggage scale calibration can be easily checked by weighing a known volume of water. Thanks

That was a very ingenious way to check and calibrate my torque wrenches. I had mine checked by the calibration van when it came to my facility shortly after I purchased it at Harbor Freight. The tech was amazed that it was spot on, especially when I told him what I paid for it. :-) I use mine because I do all my own work on my motorcycles and cars and I am diligent about torque values. Since so many fasteners are into aluminum on today's motorcycles, it is easy to strip the treads if you are too bold when tightening things up, not to mention warping the covers and heads. Thanks again.

@thefreedomguyuk

4 жыл бұрын

Perhaps. But is the HF within calibration over the entire scale ? And how long time does it remain so ?

@paulalbares643

4 жыл бұрын

@@thefreedomguyuk It was checked over the entire range and as far as how long does it remain so....that I am sure is dependent upon how much it is used. For a diy home mechanic it probably remains so for as long as I will be using it. A professional shop may be a different story but unless that shop has a yearly or semi-yearly calibration interval how does he know his "name brand" wrench is holding up to spec?

i liked this video because its informative yet entertaining to watch, good job dude

Really helpful video. Clearly a lot of effort was put into making this and it paid off. Thanks

Thank you for the clear explanation and all the necessary details.

Great video. Contrary to the complaints I see posted here, this torque wrench is not going to be used to tighten bolts on a nuclear reactor. The end result will be more than accurate enough for general auto applications. Those electronic luggage scales are surprisingly accurate.

Love this video... I need a torque wrench, and this has given me the confidence to buy and calibrate second hand one, of quality. Rather than a new cheap nasty one

Awesome video. Great information and explanation. Please keep posting more vids!

Thank you for publishing this video. You did a fine job at explaining.

Thanks! I didn't know there was such a thing as a luggage scale. I need to get out more.

Thanks for this video, I actually had everything already so it cost me $0. Always wondered how on/off my HF Torque Wrench was after having for 5+year and dropping it here and there. Surprisingly it was still within 2 to 3 ft.lbs +/-!!! I did a low end scaled of 30 ft/lbs and higher end 90 ft/lbs.

@peterd4487

Жыл бұрын

It's actually ft*lbs not ft/lbs, not really sure what ft/lbs is.

Crystal clear, brilliant presentation, thanks.

Thanks for making it so simple to understand on the calculations

What a great video! Very easy and creative, but I never would have thought of this. Thanks for the vid.

@jessstuart7495

5 жыл бұрын

therealnightwriter, You'd be surprised. I suggested building a little rig that worked on the same principle to to verify torque settings of small hand-held torque wrenches at the Electronics assembler I worked for. It could be used to do a quick verification (or adjustment) after the torque wrenches were set to a new torque value before they were used on the production batch. When I suggested making something like this, our QA people shot the idea down pretty quick. They didn't like the idea of having a home-brewed piece of test equipment that would allow you to do a quick verification to make sure the tool was within a few percent of where it should be. Instead, our QA people (in their "infinite wisdom") decided to go buy a $10,000 torque calibrator and force our maintenance guys to adjust torque wrench settings to 0.5% accuracy at the mid-range value, once per week. The cheap torque wrenches we were using were not very linear. They had about 35% error at the extremes of their torque range, and they were being used near their extremes on some production builds. This baffled our QA people. They lived in a black and white world where stuff was either "In calibration" (good) or "Out of calibration" (bad). They couldn't get management approval to buy better quality torque wrenches, and they really didn't care about the actual accuracy of the tool, or the suitability of the calibration process; They just wanted something they could sign-off on, and tell customers, "yeah, we calibrate our torque wrenches". That place was a nightmare to work for; I'm glad that is behind me now.

@Keoh083

5 жыл бұрын

That must have been a real pain. I'm sorry you had to deal with such a fiasco. The reality is that most serious companies are like this.. although the extreme of your tale is a bit much. I understand why the QA people wouldn't want a house-engineered contraption, but not because they wouldn't believe it wouldn't work, just that it would take away traceability (legal term all in its own. if you aren't sure, please research the term). Also, all standardized documents wouldn't match process. To revise all of the paperwork may have been a larger investment than to implement your genius idea. Sadly, these are one of the hurdles mankind has to stopping breakthroughs of great proportions. Best of luck to you and your ventures. Perhaps you will find a company that has less constraints on ingenuity.

@chanakyasinha8046

5 жыл бұрын

I thought

@travmanwilliams

5 жыл бұрын

@therealnightwriter You are here too, aren't you? If so obvious, why did you click the vid?

Might want to mark the known length measurement after setting the torque as that measurement changes when the handle spins in or out.

@michaelamick8295

5 жыл бұрын

RRMakeitlabs, excellent observation!

Nice video, one of the few that actually made sense and could be followed. Thank you!

I really understood you clearly. Thanks for sharing

Still can't stop laughing. man you're hilarious. Good vid though.

just remember "the angle of the dangle is directly proportionate to the heat of the meat"

@flbartlett

4 жыл бұрын

".. and the mass of the ass."

@kkampy4052

4 жыл бұрын

As long as the mass of the ass and the spread of the leg remain the same...

Very informative. Quick, easy info. About to start wrenching on an old suv, this video was very helpful.

Thanks makes sense and was easy to follow. I appreciate your effort!

So, All I need is a breaker bar and a luggage scale and do some math of distances from fulcrum, like your excel sheet, Done. Super cheap, and super accurate torque wrench alternative

@Johnrod213

4 жыл бұрын

Haha

@ummagumma5415

3 жыл бұрын

Generally, it is sufficient. Especially if you need a torque wrench a couple of times a year. But sometimes you need it for really nasty jobs like replacing diesel glow plugs, which are difficult to access. You simply don't have the space needed for a bar and a scale at 90 degrees.

This is brilliant! All I'd seen online previously was people getting out body building weights and hanging them from their torque wrenches and I was considering doing that but not anymore. This is a WAY better idea.

@jamiepaterson2369

7 жыл бұрын

I like this guys approach but you have to be very careful. You are assuming that the luggage scale is perfectly accurate and transferring that to the torque wrench. It is always safer to go back to real physical weights as they will not be grossly off. In this case, use the luggage scale to lift 25 or 35 lbs of weights to make sure it was reading properly, then proceed with his method.

@woooweee

7 жыл бұрын

Gets worse, I've heard that gym weights are also kind of variable in their weight, so you'd have to double check that as well.

@voodoo_chicken1

7 жыл бұрын

Gym weights are horrible. My 35lb weight weighs 30lbs. It's a Gold's Gym weight.

@csmith8503

Жыл бұрын

One gallon of water weighs about 8 pounds 6 ounces. So it's simple to use that to check your scale. Two plastic jugs with one gallon in each = 16 pounds 12 ounces, etc.

Awesome! Great advice all around. In particular the sketch attempt then the computer drawing. Thank you very much for shortening my time; I'm sure you did the math and were only being a Jokester. I shared it with my stepson, as that is one of the few things he respects of me. I got him the 3 Harbor Freight torque wrenches and we'll give this a shot this weekend.

Liked this video because the info was accurate and went into detail while still easy to understand. Great video, thanks.

In the service, we had to set the wrench on a low setting, and cycle it or click it several times prior to each use.

@Keoh083

5 жыл бұрын

And the reason for this was to exercise the spring and pivot block on the type 2 click type torque wrenches. Not sure which branch you were in but if you were in the navy, then you probably followed 17-20mu-07 which specified exercising 3 times at 100% scale which conforms to ASME B107. While airforce followed their 33k procedure which conforms to ISO 6789-1, which says to exercise 3 times at 60%. This guy doesn't do any of that in this video, nor does he check it at more than 1 torque setting. There could be so many problems (spring warped, pivot block maligned, cam assembly has rusted bearings) if this wrench is not checked throughout the span.

Great video. At the current cost to have a torque wrench calibrated, this could save a multi torque wrench owner a ton of money. Even if it's accuratei 1 to 3% it's still okay for most applications. Thanks.

@videomaniac108

7 ай бұрын

If it's done carefully, the result should be as accurate as the accuracy of the scale. If the scale has been calibrated with an accurately known reference weight then it should be dead on.

This is amazing! So simple I wish I'd have thought of it. You have just explained why I don't need to even buy a torque wrench for a single task I have. Thank you!

Excellent demonstration!

Cool, I didn't know of other folks who calibrate that way also. This works because torque is defined as a force applied perpendicularly to a lever arm. So when pulling on the wrench handle with the scale you have to be sure to pull at an angle as close to 90 degrees with the wrench as possible otherwise the force applied to the wrench will be less than what reads on the scale. Great video. Thanks!

@rsporsche

Жыл бұрын

If you're pulling at a distance of 50cm from the handle then a 5cm offset from 90 degrees will only be ~0.5% error in this example whereas being 0.5kg off in the 'weight' or 1cm off in the handle length will be ~3%.

Make sure when you buy your Chinese luggage scale the dollar-store provides you with an NIST-traceable calibration certificate. Just kidding. This is a great video, and if you have any doubts about your luggage scale, just remember a litre of water weighs 1 kg @ 4 degrees C, and close enough at room temperature. You can figure it out from there.

@mukundthorat5672

5 жыл бұрын

And how do you measure 1 litre..( there always a instrument error either way)

@Stefan_Kawalec

4 жыл бұрын

Cheap scales may have non-linear error. I.e. it may show 1 litre of water as 1 kg, but 2 litres as 2,1 or 1,9 kg.

@philipbyrnes7501

4 жыл бұрын

Easy, plastic milk container

@jaypuck6912

4 жыл бұрын

I calibrate my $5 luggage scales to the nearest grain.

Thank you so much! This was the perfect video!

wow lot of information but good information thank you very much for your video I appreciate it I never knew how to Seth torque wrench thank you for the knowledge

Thank you for this video. I just bought a two-foot torque wrench which i want to calibrate. Can you share your calibration conversion table excel file that you mentioned in your video? Thanks

Great video - very well and clearly explained. I guess if you were worried about it, you could check the accuracy of the luggage scale by weighing something of known weight - like a sac of potatoes or sugar or something.

Very good video. I like you made the estimation for the error introduced by the pull not being perfectly 90 degrees. That is excellent. Thanks 👍

Thank you! This helped me. A nice and clear explanation of how to calibrate a torque wrench.

This can work without needing to use a vice, just use a socket secured over a wheel lug nut.

@davidoickle1778

4 жыл бұрын

modeld80 why not!

Great information. Well explained and illustrated. Do you think you can put a link to this Excel file you made for the different length/distance to actual torque measurement or conversion? That would be helpful for those of us who are not Excel users. Thats a program that some get and some do not. Personally as a graphic artists and photographer I fall under the "not" classification. If you listed this information somewhere I must have missed it.

I watched several videos on calibrating a torque wrench and none was as simple as yours. Thank you. I need to replace the keeper set screw that holds the locking screw in the end of the wrench and not realizing that I was changing the calibration I took it apart. Dumb I know, but now I can recalibrate it. 👍🏻

Awesome DIY video! Thank you!

Geek I worked as engineeeing in a shop that calibrated all kinds of stuff . On a 100# torque wrench we had to test at 20# intervals with accuracy of 1.5%. this will give you a bell curve with decreasing accuracy towards low and high readins. We loaded with steel and brass weights they were applied not by hand, we had a device that would apply the weight slowly and a load cell bolted to the bench. This would generate a load graph and table in a 286 computer This is offered as to the test protocol s used in a real DOD government calibration shop in the 1980's this is to give you a insight to calibration.

@noexperiencecarguys5428

5 жыл бұрын

What's the name of your employer? Make sure they don't read your post.

@Keoh083

5 жыл бұрын

@@noexperiencecarguys5428 he talked about using a 286 computer. His method was used over 30 years ago. How would his current employer care today?

I am a mechanical engineer and I can confirm your method is perfectly adequate for the home DIY user. If only technitians / motor mechanics ever used a torque wrench regardless of its accuracy in their professional work

@noexperiencecarguys5428

5 жыл бұрын

I'm a long time chemical engineer with decades of experience in Silicon Valley. I agree with you. Perfectly adequate. Easy enough to reasonably calibrate that luggage scale. But if it were me, it would depend upon what I needed to torque down. For example if something needed to be torqued on the low end of that wrench, I'd use a wrench that measured in inch-pounds and calibrate that one. I prefer to be in midrange of the tool rather than at either the very low or very high end.

@Keoh083

5 жыл бұрын

NoExperienceCar Guys as a certified calibration tech I disagree with the adjustment premise, but I do agree it's adequate enough to see if you're in the ball park and only for home projects. If you're a professional in a regulated industry, this is NOT good.

@leonardpadin869

4 жыл бұрын

I am a drunk with over 2 decades of experience and I can confirm that if I needed a torque wrench I am not touching that nut without accurate testing equipment. Ever had to do a head gasket job or pay for one? That's right, if you can't afford calibration or a new wrench you can't afford a leaking head gasket cause of a stupid torque wrench out of specs. 🤷🏻‍♂️

@ericmills5683

4 жыл бұрын

I'm a four times torque wrench world champion 78,79,81,82 don't ask about 80. Bad year for me. But I'd just use a beam and never have to do any of this. Ever.

@VitoVeccia

4 жыл бұрын

Believe it or not, when it comes to torque-to-yeild head bolts, you torque then do your degrees. The problem is that at the factory, the machine does it in all one swoop. Out in the real world, every other headbolt winds up being loose. And then you have to redo the job for free in three thousand miles. So after the yield, I crank them down by hand with my " Armstrong" torque wrench. Haven't had any head gasket jobs come back in almost 20 years now.

Clear enough... useful and swift. Thanks a lot. For those who can't be sure about accuracy... nothing is able to avoid your fears. Try to send the tool to a calibrating workshop

thanks for posting this. using your procedure i was able to dial mine in to the exact pound.

To all those arguing about the calibration process and tools required shown here, do you trust more/better a HF torque wrench as it comes, or after it has been calibrated the way shown in this video?

@Keoh083

5 жыл бұрын

As it comes

@MattProductions2012

3 жыл бұрын

Sean M. Bro if you bought a hf torque wrench, it’s not better than a fucking breaker bar lmao.

I guess my question is just how certain are you of the luggage scale you are using to calibrate the wrenches with? One of the most common mistakes in any calibration project is the failure to make certain that the instrument being used to calibrate from is itself accurate..and that is much harder to,do than you might think.

@KrisH-bt5cm

Жыл бұрын

Take a five-pound gym plate and pick it up with the scale. If it weighs 5lbs that luggage scale is accurate.

@boatman222345

Жыл бұрын

@@KrisH-bt5cm Actual accuracy often varies throughout a scale's total range. It might be 100% accurate at 50% of its capacity and then be off 25% at 70% of its capacity.

@chrisplayz9739

Жыл бұрын

@@boatman222345 alright multiple weights it is!!!!

I've looked at approx 10 vids on calibrating torque wrenches - yours was the easiest to understand for the mechanically challenged like me. I need to get a vise now.

I had no idea that this needed to be done. Thank you so much for the information!

Next video, "How to calibrate a digital luggage scale using a house brick"

@Thomas-vj3jg

3 жыл бұрын

How to calibrate a house brick with a toothbrush

Don't let the picky naysayers discourage you, good enough for the DIY'er.

Great video. I found a .5" drive torque wrench a couple of years ago like the one you're calibrating, but have never used one like it. Now, attaching a trailer hitch to my truck, I need it, and had no idea how to even use it, much less check it for accuracy. Now, all is well on both counts. Thanks!

You amazing human!!! Haha, thank you so much for this post! You're saving me a lot of headache.

Beautiful. I remember that at hard times I oce had to sell my torque wrench... And put an engine together by feel lol... Funny enough every other time I did with the torque wrench it went bang Now its been years and still running great

Been twistin wrenches 46 or 47 years and always felt like tightening to torque specs was just like guessing to torque. How would you know what your wrench was actually pulling. Now it can be checked with some accuracy right there in your shop. Thank you very much for demysterifying;-) torque wrenches.

Very, very good. Very clear. Thank you so much !

Simple, easy, effective; short vid and to the point. Great stuff.

My question is why you're assuming that the $5 scale is better calibrated than the torque wrench.

@henryzr23

5 жыл бұрын

Usually they are, as most of its parts are electronic or electro-mechanics wich are very reliable. Besides, you can always use a well known mass to check their calibrations.

@thesisko4031

5 жыл бұрын

@@henryzr23 i had 25lb dumb bell laying around double checked on floor scale then tested on luggage scale. Shit its cheaper then paying for a new torque wrench or calibration. Bro tip - u can also use ur lug nuts on ur car instead of a vice, just make sure its less then would be to twist the lug nuts.

@kristupasantanavicius9093

5 жыл бұрын

Take a thin plastic bag and fill it with a liter of water. 1 liter of water = 1kg

@TheChilator

3 жыл бұрын

@@thesisko4031 great idea thank you 🙏 🔧

The accuracy of a scale can be checked by weighing a measured amount of water. 16 ounces of water weighs 1 lb.

@zamboana

5 жыл бұрын

You've just kicked the car down the road to another place where the situation is arguably even worse. To do what you're saying you need to know how accurate your volumetric measure is, and how accurate you are at reading it correctly, and... since both the density of water and the volume contained by your measuring device (at a given indicated volume) vary with temperature, now you've got to know what the temperature was when you made your measurement (and worry about how accurate your thermometer is). Long story short, this is why you use calibrated weights to measure the calibration of weighing apparatus-es.

@zamboana

5 жыл бұрын

Jack Poage no. Joseph C was referring to fluid ounces. 16 fluid ounces of mercury weighs more than 13&1/2 pounds, and 16 fluid ounces of air weighs one ten thousandth as much. Household fluid measures are nowhere near as accurate as even a cheap digital scale. Typical ones I’ve grabbed from the cupboard and checked via an accurate digital scale vary by 5% or more from their claimed markings, and it’s very difficult to be consistent when measuring with them. TLDR, the point that Raevenswood raised is a valid one. To correctly calibrate a measurement device, your reference quantity and procedures need be at least as accurate as the thing you’re calibrating, and preferably very much more so. The scale and procedure that the guy is using in this video doesn’t meet those criteria. Also... hate to point out the obvious but, water is a fluid so, to use a quantity of water to calibrate a force measurement, you have to hold it in a container of some sort. To know how much the container weighs you need a scale. If you already have a scale, then messing around with volumes of water is utterly superfluous, and is just adding additional sources of uncertainty.

@milonjano

5 жыл бұрын

16oz of distilled water @62F= 1.04lb.@@jackpoage5419

@FzudemB

5 жыл бұрын

Non-american laughing in SI measurements :D 1 litre of water = 1kg

@tullgutten

5 жыл бұрын

Or 1 liter at 1 kilo Metric for life

That's great! I have been using my torque wrench to check my luggage scale, now I can check them both at the same time, thanks!

I greatly appreciate videos with useful info.

Clever method. Worth mentioning the disclaimer that it's only as accurate as the luggage scale, which will inevitably have error in its measurement as well. EDIT: I just did this method to calibrate my Tekton 1/2" 10-150 ft-lbs torque wrench. I started with 30lbs of barbell weights @ 16" to get it close for the 40 ft-lbs torque spec, then flipped the wrench in the vise and used a luggage scale to calibrate again at 40, 60, and 80 ft-lbs on the torque wrench (so aiming for readings of 30, 45, and 60 lbs on the scale at 16", respectively). I can attest that testing at multiple torque specs is important. When I was getting a slightly over bang-on reading at 40 ft-lbs, it was considerably over-spec at 80 ft-lbs. In the end I got it calibrated reading slight under at 40 ft-lbs (29.1 lbs or so instead of 30 lbs), bang-on at 60 ft-lbs, and slight over at 80 ft-lbs. The torque wrench was definitely reading considerably under-spec when I started, which makes sense. It's a few years old and been put through its paces, never professionally calibrated since purchase. Not sure I'd ever calibrate my 1/4" drive torque wrench this way just given the sheer amount of uncertainty in this method, but I think it's good enough for my daily-driver 1/2" torque wrench.

@dntlss

Жыл бұрын

Question,on that smaller torque wrench he had first, it wasn't calibrated so he took that nut off and adjusted the spring,on that bigger wrench it was already calibrated properly but if he had to take it apart how does one go about that? just unscrew the handle until it comes apart? all my torque wrenches (CDI) are that way (without a locking nut), Thank you for your time and input.

Great video. One quibble, it's lb*ft not lb/ft. 42lb * 23" * 1 ft / 12" The inches cancel, leaving lb*ft.

@jjenson2006

5 жыл бұрын

Why complicate things? All you need to do is divide the inch measurement you marked on the handle by 12 inches and then multiply the answer you get by the lbs. reading you get on the scale.

@jackfrost1031

5 жыл бұрын

jjenson2006 that's precisely what he did.

@2averagenoobs108

5 жыл бұрын

If you got the idea, it don't matter bud.

@Stierguy1

5 жыл бұрын

@Bob Sacamano Any unit in dimension of Torque is fine.

@Stierguy1

5 жыл бұрын

@@jjenson2006 The concept of physical dimension is precisely the origin of the need to convert units. You keep track of what you're doing by getting the units right. If you are trying to convert from inches*pounds to newtons*meters, you know that you need to multiply by newtons and divide by pounds at some point, which is the exact opposite from what you would do to convert from inches/pounds to meters/newtons. You can't check your process if you are using units which are flat wrong.

Great info. I’ve been questioning my wrench’s accuracy and was going to buy a new one. Thanks

Dang! A few of the other torque calibration videos point to this video for the math part. Now I know why. Thank you !

My wrist is calibrated. Click.

@johnc8910

5 жыл бұрын

Know what happens to people with calibrated wrists? They strip threads especially when you screw small steel screws into aluminum castings.

@doublebulbing

5 жыл бұрын

@@johnc8910 I will be honest worked on all my cars for 20+ years now never had that happen but I did have that happen when a car was taken to a proper shop for a alignment they galled the threads on 5 wheel studs next time I went to rotate tires..... some time feel is best than being a professional

@blainemcdonald6972

5 жыл бұрын

Yeah but it only clicks once 🤔then what😂

I don't smoke, well only when I'm on fire but I do drink is that a good enough vise?

@mostlymoparih5682

7 жыл бұрын

Pretty cool vid, good info.

@michaelamick8295

5 жыл бұрын

Vice vs. vise, time for a bud wis er.

Fantastic video man. Thank you.

Awesome vid. Can't wait to start calibrating!