Do to arthritis I am replacing my 53 large ring with a 50 chainring, both 130 mm Shimano D/A.
and leaving the 39 on.
My cassette is 12/25 and may replace that with a 11/25 have not decided yet.
Not to concerned with the gearing but I am curious on how many links I would take out of the new chain as well as the amount of drop to the front derr.
any information and suggestions would be greatly appreciated.