Senior Member
Join Date: Jan 2009
Location: Colorado Springs, CO
Posts: 5,972
Bikes: 2015 Charge Plug, 2007 Dahon Boardwalk, 1997 Nishiki Blazer, 1984 Nishiki International, 2006 Felt F65, 1989 Dahon Getaway V
Mentioned: 54 Post(s)
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My 1984 Nishiki International Ole's large front cog is oval (I replace the smaller one with a smaller circular one for our Colorado hills). I never think about it until threads like this. Perhaps it is not oval enough, but I can't feel any difference between it and my other round-cogged bikes.