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Re: Chain Drive Efficiency

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  • astronut1001
    An interesting article. Lab results indicate that worst case a derailleur chain drive system can be in the 81% efficiency range. This is lower than I
    Message 1 of 2 , Aug 31, 2009
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      An interesting article. Lab results indicate that worst case a derailleur chain drive system can be in the 81% efficiency range. This is lower than I expected. This is at low torque and power input levels, probably below real world levels for most enthusiast bicyclists.

      Rich Wood


      --- In Geared_hub_bikes@yahoogroups.com, "astronut1001" <astronut1001@...> wrote:
      >
      > I just ran across the link to this IHPVA article on chain drive efficiency. I have not yet read it but it looks interesting, if mathematical in content. The article is a collaboration between Shimano and John Hopkins University people.
      >
      > http://www.ihpva.org/HParchive/PDF/hp50-2000.pdf
      >
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