On Thu, 12 Sep 2019 12:30:28 -0700 (PDT), incredulous
wrote:

I recall from this forum 10-15 ago that it wasn’t hard to demonstrate that the important dirt about chains is inside not on the chains; and the bad news is that it was difficult or futile to rinse or flush all the wear-causing abrasive grit from plain-bearing surfaces.

Harry Travis
Portland OREGON USA

Possibly true but abrasive damage is also a factor of quantity. A lot
of dirt undoubtedly causes more wear than a little dirt.
--
cheers,

John B.