Atom Freewheel Disassembly
#26
Senior Member

Joined: Nov 2009
Posts: 555
Likes: 11
The trim function is incorporated into the top jockey wheel on derailleurs designed for index shifting. That may make it easier for shifting with a friction lever. It should eliminate the need for overshoot/trim shifting. However, my 40 year old derailleur still shifts almost like new. I see no reason to change, so long as I can still get freewheels without those twisted teeth.






