[time-nuts] Opera coordinator has resigned

[J. Forster]

If you think about it, tightening torque only relates very roughly to
axial mating pressure.

Torque is essentially the force requires to push an object up an inclined
plane.

That is the sum of two components, the normal component of the mating
force plus the in plane component of (mating force)*(coefficient of
friction).

The latter is a guesstimate at best.

-John

===============






> On 4/1/12 3:01 AM, Dr. David Kirkby wrote:

>> I one tried a quick experiment tightening them up by hand as tight as
>> possible, then seeing how many extra turns it required to torque them to
>> whatever the torque wrench was set to (not all SMA torque wrenches are
>> set to the same figure). As far as I can tell, there is no way of even
>> roughly estimating how tight they should be by saying "hand tight + x
>> turns".
>
> Yes.. if you're talking about finger tight, there's a lot of
> variability.  With an inexpensive open end wrench, though you can get
> pretty consistent.. perhaps it's the "Calibrated thumb" on the little
> wrench?
>
> Not anywhere as good as the "click" on the real torque wrench.
>
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