Originally Posted by
Dan Burkhart
More than once, I have disassembled Ashtabula cranks that have been in use for a while to find the entire bearing assembly bright and sparkling with no sign there was ever a drop of grease anywhere near them. The most recent was a trike I serviced last year for a 92 year old man.
Those Ashtabula assemblies are the antithesis of sealed bearings, with gaps between the cups and the shell no matter how well you adjust it. I was not surprised to see how much dirt had collected in my customer’s BB shell.
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Keeping Seattle’s bike shops in business since 1978