The method you propose would measure that directly by squeezing the tire with a "calibrated thumb."
Howdy,
You bring back a pleasant memory...
Many years ago (around 1964) I was in Amsterdam and bought my first bicycle with tubular tires.
The gentleman who made the frame was getting everything set up when I asked him about tire pressures.
His English was excellent. As he held the compressor hose to the valve he explained: "Just hold the tire like this, and press with your thumb. When the pressure is right... stop!"
The method you propose would measure that directly by squeezing the tire with a "calibrated thumb."
Howdy,
You bring back a pleasant memory...
Many years ago (around 1964) I was in Amsterdam and bought my first bicycle with tubular tires.
The gentleman who made the frame was getting everything set up when I asked him about tire pressures.
His English was excellent. As he held the compressor hose to the valve he explained: "Just hold the tire like this, and press with your thumb. When the pressure is right... stop!"
All the best,
Dear Kenneth,
It would be interesting to have a few people try to judge tire pressure by thumb test on their own road bikes after the pressures were changed randomly by someone else at 10-psi increments between 60 and 120 psi.
The experiment might amuse someone who works at a local bike shop with convenient access to a variety of riders.
The method you propose would measure that directly by squeezing the tire with a "calibrated thumb."
Quoted message said:
Quoted message said:
<[email hidden]> wrote: Many years ago (around 1964) I was in Amsterdam and bought my first bicycle with tubular tires.
The gentleman who made the frame was getting everything set up when I asked him about tire pressures.
His English was excellent. As he held the compressor hose to the valve he explained: "Just hold the tire like this, and press with your thumb. When the pressure is right... stop!"
Quoted message said:
It would be interesting to have a few people try to judge tire pressure by thumb test on their own road bikes after the pressures were changed randomly by someone else at 10-psi increments between 60 and 120 psi.
The experiment might amuse someone who works at a local bike shop with convenient access to a variety of riders.
We do that frequently. And guess bike weight before hanging it on a scale. And guess torque with a torque wrench in a vise, the scale visible to all but the operator.
-- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
>On Sun, 08 May 2005 02:12:28 GMT, "Leo Lichtman" <[email hidden]> wrote: >The method you propose would measure >that directly by squeezing the tire with a "calibrated thumb."
Quoted message said:
Quoted message said:
<[email hidden]> wrote: Many years ago (around 1964) I was in Amsterdam and bought my first bicycle with tubular tires.
The gentleman who made the frame was getting everything set up when I asked him about tire pressures.
His English was excellent. As he held the compressor hose to the valve he explained: "Just hold the tire like this, and press with your thumb. When the pressure is right... stop!"
Quoted message said:
It would be interesting to have a few people try to judge tire pressure by thumb test on their own road bikes after the pressures were changed randomly by someone else at 10-psi increments between 60 and 120 psi.
The experiment might amuse someone who works at a local bike shop with convenient access to a variety of riders.
We do that frequently. And guess bike weight before hanging it on a scale. And guess torque with a torque wrench in a vise, the scale visible to all but the operator.
>>On Sun, 08 May 2005 02:12:28 GMT, "Leo Lichtman" ><[email hidden]> wrote: >>The method you propose would measure >>that directly by squeezing the tire with a "calibrated thumb."
Quoted message said:
Quoted message said:
Quoted message said:
><[email hidden]> wrote: Many years ago (around 1964) I was in Amsterdam and bought >my first bicycle with tubular tires. >The gentleman who made the frame was getting everything set >up when I asked him about tire pressures. >His English was excellent. As he held the compressor hose to >the valve he explained: "Just hold the tire like this, and >press with your thumb. When the pressure is right... stop!"
Quoted message said:
Quoted message said:
Quoted message said:
It would be interesting to have a few people try to judge tire pressure by thumb test on their own road bikes after the pressures were changed randomly by someone else at 10-psi increments between 60 and 120 psi. The experiment might amuse someone who works at a local bike shop with convenient access to a variety of riders.
Quoted message said:
Quoted message said:
We do that frequently. And guess bike weight before hanging it on a scale. And guess torque with a torque wrench in a vise, the scale visible to all but the operator.
Quoted message said:
And the results?
Humiliating on the bike weights. Some are very good, some way off on torque. Experienced mechanics are almost s good as a stick gauge for tire pressure.
-- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
