Hello, Im installing new parts in Merida Big Nine 300 2022 model.
Derailleur is Deore M5120 RD (46t compatible), Casette is M4100 Deore 11-46T
Shifter is Deore M4100.
Chain length measured according to Shimano manuals and Park Tool yt video.
Ive spent few hours and cant figure out what am Im doing wrong but the upper jockey is touching biggest casettes cog when Im on 9th gear, cant even try to go on 10th gear. I tried H, L and B screw adjustments but thats not it. My guess is that I mounted the derailleur wrong but dont know what must be changed..
Could you please take a look at whats wrong?
Video- https://youtu.be/rWkA_4kVDS4?si=6vfopU05eeX9OX0F
by vogga
3 Comments
You did the thing, that b-link bracket needs to be pointing more rearward.Â
Like this https://i.ebayimg.com/images/g/wSEAAOSwfzBjvRsz/s-l1200.webp
I know you said you measured out the chain but honestly it looks a couple links too short from here.
Derailleur is mounted incorrectly