Hey everyone, having a EP801 assist issue on my 2023 Orbea Rise and hoping someone can point me in the right direction. No error codes, already opened the motor (clean inside), but something is clearly wrong as it does not behave as it has the last 2 years. Here's the full picture:
Bike/setup:
Symptoms:
Already ruled out:
Possible contributing factors I've identified:
My gut says the axle play is corrupting the torque sensor signal intermittently but since there is no error log, I'm not sure. Anybody dealt with a similar situation?
Bike/setup:
- 2023 Orbea Rise, EP801, 360Wh battery
- Emax unlocked to 85Nm / 600W
- Stored over winter at 8-15°C and ~20% SOC
Symptoms:
- Preparing the bike after winter: needed way more pedal force than normal to engage assist, had to really build torque before the motor would kick in
- On all subsequent rides: assist is inconsistent, comes and goes, requires more effort than it should even at max assist level
- Never fully resolves, no ride has felt completely normal
Already ruled out:
- Error codes (none)
- Thermal derating (cold ambient temps)
Possible contributing factors I've identified:
- Significant lateral axle play, noticed this last year, still present
- winter, cold temp and or condensation inside motor??
My gut says the axle play is corrupting the torque sensor signal intermittently but since there is no error log, I'm not sure. Anybody dealt with a similar situation?
