That spot by the dial looks like a PMEL calibration decal was there. I wonder if it was enlisted in the USAF in a former life.
Anyone know this torque wrench?
- Thread starter maverickfhs
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Call the company and ask them how old it is and if they can re-calibrate it.
http://www.apcomossberg.com/
PS I bet its from the late 60's or early 70's.
http://www.apcomossberg.com/
PS I bet its from the late 60's or early 70's.
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Originally Posted By: tom slick
That spot by the dial looks like a PMEL calibration decal was there. I wonder if it was enlisted in the USAF in a former life.
I've read somewhere that US forces often specify the beam type.
Better be cautious. It might be AWOL.
That spot by the dial looks like a PMEL calibration decal was there. I wonder if it was enlisted in the USAF in a former life.
I've read somewhere that US forces often specify the beam type.
Better be cautious. It might be AWOL.
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Originally Posted By: George Bynum
Problem with weight and length is where the weight is applied; in concept that is the best way I know.
Don't really see why that's a problem. You can more precisely define the point of application with a bit of cordage than you can using your hand.
I'd guess (though I don't know this for a fact and may be corrected) they assume the force is applied at the mid point of the handle in normal use.
Problem with weight and length is where the weight is applied; in concept that is the best way I know.
Don't really see why that's a problem. You can more precisely define the point of application with a bit of cordage than you can using your hand.
I'd guess (though I don't know this for a fact and may be corrected) they assume the force is applied at the mid point of the handle in normal use.
Originally Posted By: maverickfhs
Originally Posted By: CR94
Originally Posted By: maverickfhs
What's the best and cheap way to calibrate it? Thanks.
1)Put it on the head of, or nut on, a horizontal bolt that won't turn easily, with the torque wrench extending horizontally (in the perpendicular direction).
2) Hang a known weight from the handle.
3) Measure distance from bolt axis to handle.
4) Reading should equal that distance times the weight.
Can I just use car lug nuts and hang weight with torque wrench and then measure the distance ?Would it make any sense or no?
Yes, but it doesn't give you much height to play with if you're hanging weights and such. Maybe with ramps?
(Re "extending horizontally (in the perpendicular direction)". Probably less confusing to forget the perpendicular bit.)
Originally Posted By: CR94
Originally Posted By: maverickfhs
What's the best and cheap way to calibrate it? Thanks.
1)Put it on the head of, or nut on, a horizontal bolt that won't turn easily, with the torque wrench extending horizontally (in the perpendicular direction).
2) Hang a known weight from the handle.
3) Measure distance from bolt axis to handle.
4) Reading should equal that distance times the weight.
Can I just use car lug nuts and hang weight with torque wrench and then measure the distance ?Would it make any sense or no?
Yes, but it doesn't give you much height to play with if you're hanging weights and such. Maybe with ramps?
(Re "extending horizontally (in the perpendicular direction)". Probably less confusing to forget the perpendicular bit.)
Originally Posted By: maverickfhs
Can I just use car lug nuts and hang weight with torque wrench and then measure the distance ?Would it make any sense or no?
A(n other) snag with that approach might be that, if you use it to calibrate the wrench at the upper end of its range, you'll over-torque the stud you use for the calibration.
People often tell me that lubricating studs (which I do) will cause my wheel nuts to be over-torqued and the studs to fail (which they don't, so far).
I don't pay much attention, but in the case above it might be a risk, depending on the range of the wrench.
If you can get a suitable bolt with a couple of nuts locked together that you can put in a bench vice, you might be able to use the bolt head for a calibration mounting for the wrench.
Using the breakout torque of a previously torqued-to-spec. nut, as seems to be suggested above, would be inaccurate, since breakout torque is different, and also varies with time.
Can I just use car lug nuts and hang weight with torque wrench and then measure the distance ?Would it make any sense or no?
A(n other) snag with that approach might be that, if you use it to calibrate the wrench at the upper end of its range, you'll over-torque the stud you use for the calibration.
People often tell me that lubricating studs (which I do) will cause my wheel nuts to be over-torqued and the studs to fail (which they don't, so far).
I don't pay much attention, but in the case above it might be a risk, depending on the range of the wrench.
If you can get a suitable bolt with a couple of nuts locked together that you can put in a bench vice, you might be able to use the bolt head for a calibration mounting for the wrench.
Using the breakout torque of a previously torqued-to-spec. nut, as seems to be suggested above, would be inaccurate, since breakout torque is different, and also varies with time.
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Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
Originally Posted By: Vikas
Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
I bought one of those.. it worked one time then died.. and HF wont replace it without the receipt
oh well it was
It I have 3 torque wrenches and an additional beam style at the shop. so its pretty easy to tell if one gets flaky.
Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
I bought one of those.. it worked one time then died.. and HF wont replace it without the receipt
oh well it was
It I have 3 torque wrenches and an additional beam style at the shop. so its pretty easy to tell if one gets flaky.
Originally Posted By: Rand
Originally Posted By: Vikas
Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
I bought one of those.. it worked one time then died.. and HF wont replace it without the receipt
oh well it was
It I have 3 torque wrenches and an additional beam style at the shop. so its pretty easy to tell if one gets flaky.
Saw one of those in Japan and was tempted for a moment, then I thought...STOP! It's a cheap electronic gadget that does something you can already do...put the demon behind thee.
Consumer resistance is easier when you have catch a plane to Japan for a refund.
Originally Posted By: Vikas
Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
I bought one of those.. it worked one time then died.. and HF wont replace it without the receipt
oh well it was
It I have 3 torque wrenches and an additional beam style at the shop. so its pretty easy to tell if one gets flaky.
Saw one of those in Japan and was tempted for a moment, then I thought...STOP! It's a cheap electronic gadget that does something you can already do...put the demon behind thee.
Consumer resistance is easier when you have catch a plane to Japan for a refund.
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$25 calibration cost for dial and click type at Angle Repair.
http://anglerepair.com/repair-calibration-charges/
Or you could just buy a 3/8 or 1/2 Craftsman beam style torque wrench for cheap, and compare it to the dial.
http://anglerepair.com/repair-calibration-charges/
Or you could just buy a 3/8 or 1/2 Craftsman beam style torque wrench for cheap, and compare it to the dial.
Originally Posted By: Vikas
Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
Not sure the wrench in question... but I send mine to Angle Repair. $50 to clean, inspect, calibrate and ship. Just sent them my SO clickers a few months back (1 mid-80s other 90s). I wouldn't send them every year, unless used professionally. However once in a while gives me peace of mind.
Personally I wouldn't trust the HF device, just like their torque wrenches... maybe only as far as torqueing lug nuts. Too many people relying on torque wrenches because they have no "feel" or experience.
Buy the electronic torque block from HF for peanuts and either calibrate this or use the electronic block for torquing. Anybody else who tells you to get it professionally calibrated has a screw loose. That will cost 4X the price of the similar new wrench. Sometime I do wonder if some people in this forum are doing nothing but trolling.
Not sure the wrench in question... but I send mine to Angle Repair. $50 to clean, inspect, calibrate and ship. Just sent them my SO clickers a few months back (1 mid-80s other 90s). I wouldn't send them every year, unless used professionally. However once in a while gives me peace of mind.
Personally I wouldn't trust the HF device, just like their torque wrenches... maybe only as far as torqueing lug nuts. Too many people relying on torque wrenches because they have no "feel" or experience.
Originally Posted By: Vikas
And why do you trust Angle Repair? Did you verify it afterwards? How?
Why? Because their business is calibrating wrenches (a lot of them)... Do you trust your doctor? Why?
I could have paid $20 to have a cert printed. I can check the wrench at work with our comparator. Angle, Team Torque, the wrench manufacturer... a lot of sources for calibration.
And why do you trust Angle Repair? Did you verify it afterwards? How?
Why? Because their business is calibrating wrenches (a lot of them)... Do you trust your doctor? Why?
I could have paid $20 to have a cert printed. I can check the wrench at work with our comparator. Angle, Team Torque, the wrench manufacturer... a lot of sources for calibration.
Originally Posted By: bmwpowere36m3
Do you trust your doctor?
Absolutely not. A bit of laziness re torque wrench calibration is'nt likely to be a matter of life and death unless you bolt wings on aeroplanes.
OTOH, if I'd trusted the 4 or so neurologists I consulted a few years ago I'd be dead by now.
Do you trust your doctor?
Absolutely not. A bit of laziness re torque wrench calibration is'nt likely to be a matter of life and death unless you bolt wings on aeroplanes.
OTOH, if I'd trusted the 4 or so neurologists I consulted a few years ago I'd be dead by now.
Originally Posted By: Ducked
Originally Posted By: bmwpowere36m3
Do you trust your doctor?
Absolutely not. A bit of laziness re torque wrench calibration is'nt likely to be a matter of life and death unless you bolt wings on aeroplanes.
OTOH, if I'd trusted the 4 or so neurologists I consulted a few years ago I'd be dead by now.
It was rhetorical... if you don't trust anyone but yourself, you have bigger issues than properly torqued hardware.
Originally Posted By: bmwpowere36m3
Do you trust your doctor?
Absolutely not. A bit of laziness re torque wrench calibration is'nt likely to be a matter of life and death unless you bolt wings on aeroplanes.
OTOH, if I'd trusted the 4 or so neurologists I consulted a few years ago I'd be dead by now.
It was rhetorical... if you don't trust anyone but yourself, you have bigger issues than properly torqued hardware.
Originally Posted By: Vikas
And why do you trust Angle Repair? Did you verify it afterwards? How?
I trust them because they are a warranty repair center for the brands with asterisk. If all these top shelf brands can rely on them to make repairs, I am sure the calibration can be trusted to be accurate.
http://anglerepair.com/brands/
And why do you trust Angle Repair? Did you verify it afterwards? How?
I trust them because they are a warranty repair center for the brands with asterisk. If all these top shelf brands can rely on them to make repairs, I am sure the calibration can be trusted to be accurate.
http://anglerepair.com/brands/
Originally Posted By: bmwpowere36m3
Originally Posted By: Ducked
Originally Posted By: bmwpowere36m3
Do you trust your doctor?
Absolutely not. A bit of laziness re torque wrench calibration is'nt likely to be a matter of life and death unless you bolt wings on aeroplanes.
OTOH, if I'd trusted the 4 or so neurologists I consulted a few years ago I'd be dead by now.
It was rhetorical... if you don't trust anyone but yourself, you have bigger issues than properly torqued hardware.
Whereas if I was dead I'd have no issues at all. Win-win?
Originally Posted By: Ducked
Originally Posted By: bmwpowere36m3
Do you trust your doctor?
Absolutely not. A bit of laziness re torque wrench calibration is'nt likely to be a matter of life and death unless you bolt wings on aeroplanes.
OTOH, if I'd trusted the 4 or so neurologists I consulted a few years ago I'd be dead by now.
It was rhetorical... if you don't trust anyone but yourself, you have bigger issues than properly torqued hardware.
Whereas if I was dead I'd have no issues at all. Win-win?
and you wouldn't be posting... so that's a win
Originally Posted By: maverickfhs
Originally Posted By: dishdude
No way that has any degree of accuracy. It's a cool show piece though.
I actually used this one today to tighten up lug nuts on the Civic. Should I redo them?
I wouldn't be too concerned with accuracy when torquing lug nuts. Evenly torquing them is more important than a few foot pounds under or over a specific torque.
Originally Posted By: dishdude
No way that has any degree of accuracy. It's a cool show piece though.
I actually used this one today to tighten up lug nuts on the Civic. Should I redo them?
I wouldn't be too concerned with accuracy when torquing lug nuts. Evenly torquing them is more important than a few foot pounds under or over a specific torque.
Originally Posted By: Vikas
And why do you trust Angle Repair? Did you verify it afterwards? How?
Probably because their cert. sheets state that their calibration standards are traceable to the National Institute of Standards, which is part of the department of commerce.
And why do you trust Angle Repair? Did you verify it afterwards? How?
Probably because their cert. sheets state that their calibration standards are traceable to the National Institute of Standards, which is part of the department of commerce.
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