It isn’t touching my frame but seems quite close. Worried if my bb flexes or seat tube flex when putting down a lot of power it might.
GRX 400 FD
by 15edwardz
It isn’t touching my frame but seems quite close. Worried if my bb flexes or seat tube flex when putting down a lot of power it might.
GRX 400 FD
by 15edwardz
4 Comments
Use this to support the Front derailleur against your frame that has a small metal plate pasted.
That’s the front derailleur stabilizer screw. It is supposed to butt up against that stick-on metal plate to stabilize the GRX front derailleur.
Looks like your bike might have had bigger chainrings in the past, and with smaller chainrings the front derailleur had to be moved lower so that stabilizer screw is no longer butted up against that stick-on metal plate.
It may the support screw/bolt which should contact the seat tube. You can look up your model derailleur to see https://si.shimano.com/en/pdfs/dm/GAFD001/DM-GAFD001-01-ENG.pdf
I think It helps align the derailleur properly:
https://youtu.be/Yth0Kmw3XOc?si=rxj5k9ZMMta8Nqt3
From 4:17 onwards