I made a DIY derailleur that does not have a parallelogram. This isn’t practical enough, but I’m happy with the unique mechanism of the derailleur.
It looks like it’s moving.
When I first made this, it was the first mechanism in the world! I thought.
However, when I looked it up, I found that the mechanism of FSA K-FORCE WE was the same.
Another derailleur that does not use a parallelogram is the slide shaft type, but the world’s first electric derailleur, the MAVIC ZAP, is also a slide shaft type.
Do you know what other parallelogram derailleurs do not use?