Log in

View Full Version : Old-school torque wrench?



sparkles
9th November 2009, 20:18
so turns out i cant find my torque wrench only his old one

just wanted how do you use it?

well i know you turn it till it points to the right setting
BUT the units are difference?


this is what i need to go to

tighten torque 23-27 N.m
................ (2.3-2.7 kg-m)

riffer
9th November 2009, 20:28
Use an online converter.

Like this one (http://www.mr2ownersclub.com/converter.htm).

17 nm = 12.5 ft/lb
23nm = 17 ft/lb

BASS-TREBLE
9th November 2009, 20:29
Use the ft-lb, lots of converters on google.

You have a typo there too, your kg-m and N.m don't match.

You mean 23-27N/m?

sparkles
9th November 2009, 20:40
this is what it say

Motu
9th November 2009, 20:46
Beam torque wrenches are good,just make sure your needle is zeroed.Best thing is you can see the theroy right before your eyes...no mystery clicky thing.

smoky
9th November 2009, 20:49
...no mystery clicky thing.

Bloody technology

gatch
9th November 2009, 21:00
With the rust on it I would get it calibrated if you want to be really fussy..

riffer
9th November 2009, 21:54
Bloody technology


My FACOM doesn't go click, it sort of goes loose. My Warren and Brown goes click but...

LBD
9th November 2009, 22:12
Use the ft-lb, lots of converters on google.

You have a typo there too, your kg-m and N.m don't match.

You mean 23-27N/m?

He does have a typo although....

They shouldn't match exactly because 1 Kg/m = 9.80665 Nm...(Its not 10 x)

However....25 N.m = 18 Foot/ Lbs

Motu
9th November 2009, 22:57
My Warren and Brown goes click but...

W&B is the best torque wrench ever made,simple and accurate,and last a lifetime.Torque beam of course.

smoky
10th November 2009, 15:18
Torque's cheap

Ixion
10th November 2009, 17:55
w&b is the best torque wrench ever made,simple and accurate,and last a lifetime.torque beam of course.

+1 .

paturoa
10th November 2009, 18:57
I've got one similar to that myself. As a helpful hint - I grap a bit of masking tape and stick it on the face at the desired torque setting MUCH easier than reading it as you go.

taff1954
10th November 2009, 20:55
BUT the units are difference?


mkp = Kilopond Meter = 9.806 Nm - haven't seen that used for years.

For those that need it, I use to get HTC to calibrate our torque wrenches - from a tiny 10 oz-in to a double-barrelled 2000 lb-ft - we had to get them checked every 3 months. Good job they did too.

SARGE
10th November 2009, 20:59
i can calibrate them at the Sulco HQ in Manukau also for the dorklanders

Motu
10th November 2009, 21:14
We used to test 2 W&B's against each other - single click in stereo.I hate clickers - the only thing they have going for them is speed.And since when did speed become more important than a quality job?

SARGE
10th November 2009, 21:15
We used to test 2 W&B's against each other - single click in stereo.I hate clickers - the only thing they have going for them is speed.And since when did speed become more important than a quality job?

1983 i think....

Motu
10th November 2009, 21:28
About then - bonus systems to get productivity up.It worked....but customers got less for their money when less was done to pump the jobs out quickly.

More speed,less haste my boss used to tell me.Now I am seeing the young guys doing just that.Old dogs learned their tricks when they were young.....

Pedrostt500
10th November 2009, 21:32
I've got a W&B 3/4" drive torque wrench, not sure how accurate it is.
the best Ive seen was a company in taranaki, that put small hydraulic jacks on the studs, stretched the studs with the jacks then wound the nuts down hand tight, then released the jacks, they used this on Petrochemical pipe work.

Motu
10th November 2009, 21:57
These days the angle method is used more than an ultimate torque figure - a low initial torque,then 90 deg,plus 90 is common.

LBD
11th November 2009, 04:18
I've got a W&B 3/4" drive torque wrench, not sure how accurate it is.
the best Ive seen was a company in taranaki, that put small hydraulic jacks on the studs, stretched the studs with the jacks then wound the nuts down hand tight, then released the jacks, they used this on Petrochemical pipe work.

Great system, common also on very large engines, I used this system regularly on the head studs of a 4400kw 9cyl pielstick engine...essentually bolt stretch, and all the studs are tensioned at the same time to the same load. Perfect.


These days the angle method is used more than an ultimate torque figure - a low initial torque,then 90 deg,plus 90 is common.
Torque turn method it called, used on medium size gear. But bolt stretch is still best. ie con rod bolts. mike the length then tension them until they stretch a pre determined length.

Then there is the most common method known as the "Kiwi back yard bike mechanic method"...Tighten intill bolt thread strips then back 1/4 turn.