Thanks, Len. I had to first look up "cogent" in my dictionary ("forcibly convincing"), but I also read a few other's posts after I posted, so I must at least credit Carl Gonzalez and "Berkeley" Brian for being on to the same cure. In Brian's case, the increased chain tension helps force the roller past the reverse-shark-finned tooth's corner. This should work for milder cases, and I once even had this work for me when my touring bike's worn granny ring would often slip during impact loading over severely rough ground. Carl grinds off the driven-side corners, as I do. Again, these solutions address sprocket wear at the base of the tooth. Well-"roached" drivetrains need not apply!
David Snyder (rainy) Auburn, CA ----- Original Message ----- From: lennys_email@juno.com Subject: skipping chain
david,
that was a remarkably cogent discourse on the chain/sprocket interface. my compliments. you must be a very fine mechanic.
best regards,
len