On 10/11/2018 6:03 PM, Frank Krygowski wrote:
On 10/11/2018 3:30 PM, AMuzi wrote:
On 10/11/2018 12:53 PM, Theodore Heise wrote:
On Thu, 11 Oct 2018 09:27:02 -0700 (PDT),
  Frank Krygowski wrote:
 On Thursday, October 11, 2018 at 5:00:33 AM UTC-4,
John B. Slocomb wrote:
On Thu, 11 Oct 2018 08:54:38 +0200, Emanuel Berg

wrote:

Just out of curiosity, is there a "torque wrench" pump or
compressor? I.e., you would screw on the presta valve,
set
the gizmo to e.g. 35psi, engage it, and instead of
watching
the indicator, automagically at the right level it would
stop?

Most of the gas stations here use an air station that
you can
set for your desired pressure and then just plug the
hose onto
the tire valve
- there is a little clamp to hold it there. When the
tire is
  inflated to the specified pressure the inflation
stops and a
  bell rings.

Since they aren't manufactured here I had assumed that the
rest of the world had them too.

 My experience from 50+ years ago says not to rely on
those
 things, although I suppose they may be different now.

 Back then I blew a tire off the rim with one. I
suspect the
 problem was the volume of each pumping stroke. In a
large sized
 car tire, the volume surge with each big stroke would be
 absorbed and barely raise the pressure. In a low
volume bike
 tire, it caused an explosion. That's my guess anyway.

 I usually inflate using a manual floor pump with a
gage. It's
 easy enough to stop pumping when the dial reads the
desired
 temperature.

Don't you mean, when the dial reads the desired foot-pounds?


funny. Pressure is mass/area usually. Except on RBT.

No, sorry, it's FORCE per unit area.

https://whatis.techtarget.com/definition/pressure

https://en.wikipedia.org/wiki/Pressure

Mass vs. weight vs. other forces is a big item of confusion
for physics and engineering students. Teachers work hard to
correct the confusion.


Thank you.

As a 10th grade dropout, I understand the limits of an
autodidact education.


--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971