Originally Posted by
estasnyc
...What I didn't consider was another mod on the panasonic that I'd done by stretching out the frame spacing to 135mm ...Now, when the chain is on each of the two outermost cogs of the cassette, it will rub against the next cog in as it goes to the crankset...My measurement for the current chainline is 42mm.
...Well, what do you think folks?
I think you didn't get the rear triangle aligned correctly when you spread the dropouts. The right stay moves much more easily due to the crimping for chainrings. If it started at 120mm and you spread it to 135mm with paying attention to alignment is almost certain to be mis-algned. That and/or a 42mm chainline for 135mm OLD is your issue. The outer rings CL should be ~50mm.
- Take a perfectly dished wheel, install it in the frame and look closely, if it's off by more than ~5mm you'll be able to see it by sighting down the head tube, seat tube and rim.