In rec.bicycles.misc Eric M wrote:

: I think bicycles are more like 98% efficient, if that's the
: case 90% would really suck.

AFAIK chain efficiency depends on whether you run it in laboratory
conditions (maybe a bottom fairing or casing it all in an oil bath
would do the trick too) or if the chain is dirty from all the
real-world stuff flying around on roads...

--
Risto Varanka | http://www.helsinki.fi/~rvaranka/hpv/hpv.html
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