Hi again!
So sorry to bother you with my vibration issue (big chainring / small cogs) again.
I know it sounds crazy, but could anyone with an Ultegra Di2 R8100 (2x12, 11-34) take a quick video of their bike on a stand spinning in that gear please 🙏 (using the smallest cog) ?
As this is my first bike, I'm just wondering if this vibration is normal and if it’s all in my head.
Thank you so much for your help… sorry again