I have a centurion ironman 1986, I wonder what was the gear ratio for that model bike it has freewheel gear, and I may need to replace the freewheel do to excessive hopping and wear to chain and cogs.
I ve had the axle cleaned and degreased derailer, lubed cables, and it stil dosent like the larger gears works best in the smallest or 6th gear.
I ordered a NAshbar 6 spd gear for it, but I am alitttle worried about gear size changes with such a small number of gears. My LBS said get the lowest ratio I can, avoid the MTB gears their not needed on a bike that will be ridden mostly on flat land.
her's the ratio I ordered. Quote:
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