>Although there aren't any PICs on-board yet, after
>studying the gear ratios maybe there's a place for
>automatic selection. On a 3-front 7-back set of
>sprockets there's so much overlap between the ratios
>it makes it tricky doing a smooth transition from
>low to high manually without a lot of lever flicking

Apparently there is a french company called Mavic Mektronic that makes an
electronic gear change system for bikes with Derailleur type gears. Uses a
push button on each handle bar, one for up, one for down shift - F1 paddle
change style.

see http://www.bikyle.com/mavic.asp Apparently uses the energy in the drive
train to do the shift so they don't need large batteries and actuators. Not
sure I would want one at that price though. A search gives lots of sites
with reviews, which all seem to be glowing brightly :))

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