M
Michael
Guest
I didn't remember when I last replaced the front bearings on one of my bikes,
and when I looked in the maint. notebook I discovered that the last entry for
that axle on that bike was dated January 2004. Could it really have been so
long ago? I didn't think so. Decided to have a look at the bearings under
magnification, just for grins. I was surprised to see that the surface of every
bearing was ... mottled, for want of a better word. Not pitted or burned, just
not homogeneously shiny and smooth-looking as I thought it should be. Try to
imagine what continents and oceans of a steel Earth might look like from the
moon: mirror-like oceans; light gray continents with ripple-like borders.
Are these bearings corroded? Worn? Heat damaged? Typical of high quality
bearings in good condition? Typical of low quality bearings in good condition?
--
Michael
and when I looked in the maint. notebook I discovered that the last entry for
that axle on that bike was dated January 2004. Could it really have been so
long ago? I didn't think so. Decided to have a look at the bearings under
magnification, just for grins. I was surprised to see that the surface of every
bearing was ... mottled, for want of a better word. Not pitted or burned, just
not homogeneously shiny and smooth-looking as I thought it should be. Try to
imagine what continents and oceans of a steel Earth might look like from the
moon: mirror-like oceans; light gray continents with ripple-like borders.
Are these bearings corroded? Worn? Heat damaged? Typical of high quality
bearings in good condition? Typical of low quality bearings in good condition?
--
Michael