Hi,
I have a question about about Shimano DI2 Front Derailleur setup. I have some issues with cog -13
1) If I start in a slower gear and up-shift into this cog-13. The front derailleur doesn't engage trim. As a result, my chain is rubbing against my front derailleur. I have vision chainrings, and the front chainring is ever so slightly warped (barely a business card width of misalignment), resulting in a rhythmic grinding sound
2) If I shift further down into cog -12. Front trim engages and the noise goes away. I can then shift back down to cog-13 and keep pedaling without noise. FD won't down-trim until I shift back to cog-14.
3) As a result, if i want to shift from cog-14 to cog-13. I always have to overshift to cog-12, then downshift to cog-13.
I have taken the bike to my bike shop and they say the lower limit screw and upper limit screw are set correctly. The grinding noise is because my chainring is a bit warped. I will make the chain jump if i make any adjustments.
Is there anything I can do to fix this? Is this normal? Thanks in advance for looking at my issue. I am hoping there might be some off-the-path solution from the slowtwitch community.
I have a question about about Shimano DI2 Front Derailleur setup. I have some issues with cog -13
1) If I start in a slower gear and up-shift into this cog-13. The front derailleur doesn't engage trim. As a result, my chain is rubbing against my front derailleur. I have vision chainrings, and the front chainring is ever so slightly warped (barely a business card width of misalignment), resulting in a rhythmic grinding sound
2) If I shift further down into cog -12. Front trim engages and the noise goes away. I can then shift back down to cog-13 and keep pedaling without noise. FD won't down-trim until I shift back to cog-14.
3) As a result, if i want to shift from cog-14 to cog-13. I always have to overshift to cog-12, then downshift to cog-13.
I have taken the bike to my bike shop and they say the lower limit screw and upper limit screw are set correctly. The grinding noise is because my chainring is a bit warped. I will make the chain jump if i make any adjustments.
Is there anything I can do to fix this? Is this normal? Thanks in advance for looking at my issue. I am hoping there might be some off-the-path solution from the slowtwitch community.
Last edited by:
bloodyshogun: Apr 17, 17 13:39