It's essentially the same as the original Rally. It is a horizontal parallelogram, not a slant parallelogram, so it would not violate the SunTour patent. However, I think it was sold after the expiration of the SunTour patent in 1984 anyway.
Louis Schulman Tampa, FL
> I found this item interesting:
> Is this derailleur essentially the same as the original Rally? Or was it designed after the patent on the Suntour slant-parallelogram expired?
> Charles Andrews
> Los Angeles