Hi there
Despite no longer being under guarantee, Specialized very kindly recently sent me a replacement motor for my 2014 Turbo S. The old motor (SBC-M01 0,25kW nominal) had started to run as soon as the wheel turned, regardless of whether one was pedalling or not - not great when this happened whenever I carried the bike up the flight of stairs from the street to my house. However I'm having some problems with the new motor they sent (SBC-M03 0,5kW nominal). The main "problem" is that the motor doesn't seem to stop providing support when I cross the 45 km/h mark. With the old motor I could feel the motor cut out quite clearly when I hit 45 km/h: With the new one there is no noticeable difference when cycling faster than 45km/h (maybe this shouldn't be termed a problem).
I took the bike to my dealer who suggested that perhaps the wheel diameter had been entered incorrectly and that I wasn't actually riding faster than 45 km/h with support - the display was just telling me that I was going faster than I actually was. I was a bit sceptical about this explanation since the wheel/tire size hadn't changed, but I nevertheless asked the dealer to "correct" the wheel diameter.
I picked the bike up a few days ago and I still have the same "problem". I wondered whether any software/firmware updates that my dealer might have made when he installed the new motor might mean that the motor cut-out is no longer so sudden and thus less easy to perceive. This doesn't seem to be the case. I tested this by riding fast and seeing whether there was a difference between continuing to ride in turbo mode (at a speeds between 45 and 50km/h) and riding this fast after having switched to the unsupported mode. There is a BIG difference. So my suspicions seem to be confirmed: my new motor doesn't seem to be cutting out at 45 km/h.
My question: Has anybody else experience such a "problem" and/or does anybody have a plausible explanation for what might be the cause?
Any tips gratefully received,
Matthew
Despite no longer being under guarantee, Specialized very kindly recently sent me a replacement motor for my 2014 Turbo S. The old motor (SBC-M01 0,25kW nominal) had started to run as soon as the wheel turned, regardless of whether one was pedalling or not - not great when this happened whenever I carried the bike up the flight of stairs from the street to my house. However I'm having some problems with the new motor they sent (SBC-M03 0,5kW nominal). The main "problem" is that the motor doesn't seem to stop providing support when I cross the 45 km/h mark. With the old motor I could feel the motor cut out quite clearly when I hit 45 km/h: With the new one there is no noticeable difference when cycling faster than 45km/h (maybe this shouldn't be termed a problem).
I took the bike to my dealer who suggested that perhaps the wheel diameter had been entered incorrectly and that I wasn't actually riding faster than 45 km/h with support - the display was just telling me that I was going faster than I actually was. I was a bit sceptical about this explanation since the wheel/tire size hadn't changed, but I nevertheless asked the dealer to "correct" the wheel diameter.
I picked the bike up a few days ago and I still have the same "problem". I wondered whether any software/firmware updates that my dealer might have made when he installed the new motor might mean that the motor cut-out is no longer so sudden and thus less easy to perceive. This doesn't seem to be the case. I tested this by riding fast and seeing whether there was a difference between continuing to ride in turbo mode (at a speeds between 45 and 50km/h) and riding this fast after having switched to the unsupported mode. There is a BIG difference. So my suspicions seem to be confirmed: my new motor doesn't seem to be cutting out at 45 km/h.
My question: Has anybody else experience such a "problem" and/or does anybody have a plausible explanation for what might be the cause?
Any tips gratefully received,
Matthew
