ERG Mode Power Oscillations on Elite Justo with Shimano 12-Speed Di2
Posted: Tue Jun 30, 2026 9:19 am
Hi everyone,
I'm having an issue with my Elite Justo in ERG mode. At low cadence (65–75 RPM), the power fluctuates by around ±30–40W instead of staying stable. This mainly happens when using the middle gears of my Shimano Ultegra Di2 R8100 12-speed drivetrain.
Subway Surfers
I've already performed multiple spindown calibrations, checked the Di2 alignment, and tested both Bluetooth and ANT+, but the problem remains.
Has anyone experienced similar ERG instability with an Elite trainer and a 12-speed drivetrain? Any suggestions or firmware settings that might help would be greatly appreciated.
Thanks!
I'm having an issue with my Elite Justo in ERG mode. At low cadence (65–75 RPM), the power fluctuates by around ±30–40W instead of staying stable. This mainly happens when using the middle gears of my Shimano Ultegra Di2 R8100 12-speed drivetrain.
Subway Surfers
I've already performed multiple spindown calibrations, checked the Di2 alignment, and tested both Bluetooth and ANT+, but the problem remains.
Has anyone experienced similar ERG instability with an Elite trainer and a 12-speed drivetrain? Any suggestions or firmware settings that might help would be greatly appreciated.
Thanks!