The 520 is stock 1997, so has the 30-42-52 crank and the 11-32 8 in the rear. Rear shifter can move from indexed to friction. Front is friction. I hope it will be as easy as changing out the inner ring to a smaller or replacing with an MTB crank. LBS is on tap for the weekend.
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TroyM - bike riding, guitar playing, retired high school agriculture teacher and regular guy.