Which torque wrench?

[hartcjhart]

How?

because if you set a torque wrench half in drive to X then adapt the drive up or down you are changing the setting, bit like a gearbox and engine, change from 4th to 3rd and the revs go up and viccy versyy

 

[Norman_E]

because if you set a torque wrench half in drive to X then adapt the drive up or down you are changing the setting, bit like a gearbox and engine, change from 4th to 3rd and the revs go up and viccy versyy

???????????

I just don't see how adding an adaptor, for example to use 3/8 inch sockets with a half inch drive torque wrench alters the torque in any way.

P.S. If the OP wants a small and cheap torque wrench there are plenty made for the US market that read in Inch Pounds Force rather than Newton Metres. Example here http://www.ebay.co.uk/itm/1-4-DRIVE...160?pt=LH_DefaultDomain_3&hash=item460edccd10

Conversion to Newton metres is easy. Multiply required torque in Newton Metres by 8.85 to get the required setting in Inch Pounds Force.

(1 newton metre = 8.85074579 inches pound force)

 

[JumbleDuck]

because if you set a torque wrench half in drive to X then adapt the drive up or down you are changing the setting, bit like a gearbox and engine, change from 4th to 3rd and the revs go up and viccy versyy

Here's a picture of "an adaptor 1/4" drive to screwdriver bit hex". Could you explain how the torque applied by the screwdriver end could be different from the torque applied to the 1/4" drive end?

 

[emandvee44]

Every year at work we connect up dozens of flanges and torque many hundreds of nuts and bolts, with torque applied of anything from 560 Nm to 1,600 Nm. We use hand torque wrenches and also hydraulic ones. We use 1" drive sockets of various sizes, (38mm AF, 41mm AF, 50 mm AF and 60mm AF). We have several sockets of each size so they are frequently interchaged.We often use 2 torque wrenches simultanously on one flange
We run cross checks with different torque wrenches on selected nuts/bolts which have been torqued. Never had a problem.
We know a bit about torque.
I cannot understand hartcjhart 's comment in relation to using an adaptor .

M.

 

[JumbleDuck]

I cannot understand hartcjhart 's comment in relation to using an adaptor .

Perhaps he was thinking of one of these?

 

[colind3782]

Using a crowsfoot would require an offset.

 

[emandvee44]

Which Torque Wrench

Here is a follow up to the thread - please excuse the drift.

I received a package today from UK containing among other things, 2 ‘O’ rings for the saildrive bottom plug.
I decided to go ahead with the oil change, and found that the drain plug was very tight. I had to use a large screwdriver and a wrench. (10Nm – I don’t think so)
On the plus side the oil was spotless and was lub oil (not ATF as I had thought). Probably could have left it, but it is a required item on the maintenance schedule and already overdue.

The ‘O’ ring appears to be in good condition, but is it the correct size? (10mm I.D.)
Also the ‘O’ rings which I received today appear too small (6mm I.D.), although the part number is 3855081-R (on the Keyparts invoice, but the o rings were in an unmarked pack) which appears correct for my drive.
The plug shaft is 7.2mm diameter at the base.
Any comments?

Thanks,

Michael.