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Conference noted::bicycle

Title: Bicycling
Notice:Bicycling for Fun
Moderator:JAMIN::WASSER
Created:Mon Apr 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3214
Total number of notes:31946

1196.0. "Elliptical vs. Round?" by PMRV70::SHAUGHNESSY () Tue Jun 06 1989 15:16

    I am in the market for a new bike in the $500-$600 range.  One of
    the many subjects about which I am ignorant are the relative
    advantages and disadvantages of elliptical and round chainrings.
    I'm told that the elliptical rings provide greater acceleration
    because they provide mechanical advantage through leverage.  They
    also tend to be more expensive, however.  Although I notice a 
    difference between elliptical and round, I haven't been able to
    develop a preference in my limited test riding.  Are the elliptical
    rings worth the extra money?  Holding all other factors constant,
    what sort of time advantage would they offer a reasonably competent
    rider (my objective) in a 25 mile time trial?
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1196.1This has been discussed -- here's a summaryCESARE::JOHNSONMe? Opinionated?Tue Jun 06 1989 15:3414
    Check out notes 441 and 685.  I think I can summarize what's been
    said so far:
    
    MTB riders -- Most if not all consider these de rigeur.
    
    Road Racers -- Mixed opinions
    
    o Some concerned that it hurts their spin (100 rpm plus)
    o Some convinced that the small ring helps in climbs.
    o Some complained that the elliptical rings can cause a dropped
      chain under race conditions.

    I think an honest answer to your question about time advantage in
    a TT is ZERO.  The choice is simply a matter of style/personal preference.