Torque to 80 lb-in how?

Posted by DD_BobK on October 14, 2009, 12:16 pm

> > put your torque wrench in a vice and drive the socket end to it with a
> > wrench or ratchet....."calibrate" your arm, hand, wrist to 60 in-lbs
> > and add 1/3 of oyur 80 in-lbs
> > cheers
> > Bob- Hide quoted text -
> > - Show quoted text -

> I've never seen anyone actually using a torque wrench on these
> couplings. =A0 You just tighten them up like most things, to be
> reasonably tight, but not risk stripping them.
> Ditto, its just a coupling, grab a tool and tighten it...

Although, for most (many?) of us on AHR, tightening a wide range of
things is second nature.....after YEARS of doing so.

For some, every new device or situation, is just that.....a new
situation. Without experience or a "reference", it is hard for these
folks to execute confidently on these new and unfamiliar tasks.

I had a 15+ year apprenticeship on all manner of mechancial devices &
situations (followed by another 30+ years of professional
practice) ..... not everyone has the luxury of such an experience.

That's why it is helpful to "know one's audience" and to attempt to
relate the real world of mechanical experience to something they can
"measure".

As they gain experience, they will eventually "just grab a wrench &
tighten it". :)

cheers
Bob

Posted by Bob F on October 14, 2009, 11:35 am

clare@snyder.on.ca wrote:

> On Tue, 13 Oct 2009 22:15:40 -0400, "MiamiCuse"

>> I am using no hub couplings to connect drain pipes and the couplings
>> are made of stainless steel clamps with a 3/8" hex head with
>> specifications called for tightening to 80 pound-in.
>> I have a torque wrench that will tighten to 60 pound-inch and then
>> releases but not 80, and I don't want to pay a lot of money to for a
>> 90 pound-in torque wrench just to tighten 2 couplings and will not
>> have a use for it ever. Is there any trick anyone can think of that
>> would allow me to tighen to that specification?
>> Thanks,
>> MC

> Use an extention to increase the leverage between the click mechanism
> and the screw head. Or use a pull scale on the end of a wrench and do
> the calculations for length. 8 lbs on a 10 inch wrench would do it.

That would be "two fingers" on a 10 inch wrench.

Posted by DerbyDad03 on October 14, 2009, 12:27 pm

> I am using no hub couplings to connect drain pipes and the couplings are
> made of stainless steel clamps with a 3/8" hex head with specifications
> called for tightening to 80 pound-in.
> I have a torque wrench that will tighten to 60 pound-inch and then releas=

> but not 80, and I don't want to pay a lot of money to for a 90 pound-in
> torque wrench just to tighten 2 couplings and will not have a use for it
> ever. =A0Is there any trick anyone can think of that would allow me to ti=

ghen

> to that specification?
> Thanks,
> MC

Wait till it releases at 60 in-lb and then tighten it a little more.

You'll be close enough to 80 for what you're connecting. Test it
before concealing it if you're concerned.

Posted by Stormin Mormon on October 14, 2009, 5:03 pm

Divide by 12 to get foot pounds, and then use your foot
pound wrench?

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

I am using no hub couplings to connect drain pipes and the
couplings are
made of stainless steel clamps with a 3/8" hex head with
specifications
called for tightening to 80 pound-in.

I have a torque wrench that will tighten to 60 pound-inch
and then releases
but not 80, and I don't want to pay a lot of money to for a
90 pound-in
torque wrench just to tighten 2 couplings and will not have
a use for it
ever. Is there any trick anyone can think of that would
allow me to tighen
to that specification?

Thanks,

MC

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Torque to 80 lb-in how? - Page 2