On 4/23/2018 2:00 AM, John B. wrote:
On Sun, 22 Apr 2018 06:53:29 -0700, Joerg
wrote:

Pressure gauge? A seasoned cyclist should be able to gauge the tire
pressure with a thunb.

That sounds like an old experienced cyclist, but can you tell the
difference between 65 psi and, say 70 psi?

Years ago, our club used to run a family oriented picnic and bike tour
of the local metropark. The picnic featured several bike-oriented games.
One was to deflate your tire, then pump it up to the target pressure you
chose, without the use of a gage. As I recall, there were guys who got
within a couple percent of their target.

--
- Frank Krygowski