Hello All,

Time for a new rear derailleur design https://en.wikipedia.org/wiki/Derailleur_gears ...... after more than 100 years ....

I started to admire my new rear derailleur ….. good news …… it is an eTap wireless …. Very cool ….. even comes with ceramic bearings in the derailleur cage …. Cool ….. BUT


(stock photo)

I was looking at the basic overall Rube Goldberg design of bicycle rear derailleurs …. They suck ….. Large aero profile and exposed to damage.

Rear bicycle derailleurs look like something the alien Klingons foisted upon us ...... as punishment .................

How about a rear derailleur that is mounted on the inside of the rear seat stay and works like the front chain ring derailleur (no tension cage) with tension pulley(s) mid chain attached to the chain stay?

Way more aero ….. simpler …..and location protected from damage …… and ........ would obsolete all existing rear derailleurs ..........


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Cheers, Neal

+1 mph Faster