scrambler
10 kW
TorEddy said:This is when i notice that slow pedaling on a singletrack is not ideal on the LMX64.
The pas delivers power very unevenly and is far from the feeling you get on a Shimano steps system.
This might not be surprising due to the raw power of the 64, but it would be nice to enjoy a smoother pas ride. This i why i am seriously considering changing to the new Silixcon controller as i understand it has a much smoother pas riding.
But if i change controller, i would also like to switch to the new belt drive. Does anybody have any experience with the new high-end belt that is supposed to last longer than the original belt?
This sounds like the possible drawback of a torque sensor only pedal assist. When pedaling at constant speed, the pressure on the pedal is uneven as you are only applying pressure to maintain the speed and there is less needed then when climbing for example. As a result, because the torque sensor is proportional to your "uneven" effort on the pedal, you get an on/off feeling for the assist.
This is why drives like Bosch use a combination of Torque sensing and cadence sensing. The torque sensing take the beginning of the curve so you get an immediate proportional response when you put a lot of pressure on the pedals, but at sustain speed, it uses the signal from the cadence sensor to smooth out the oscillation of the torque sensor.
A while back, one guy ou built his own PAS with a BeamTS torque sensor and a cadence sensor describe the basis pretty well
https://endless-sphere.com/forums/viewtopic.php?f=3&t=67086&hilit=beamts#p1010327
If this is indeed the problem you are experiencing, I wonder if LMX has considered trying to add a cadence sensor to the Torque sensor and merge them for sustain high speed riding through the controller. It also depends if the Nucular controller has that functionality
EDIT: Rereading the thread, Adam did mention in post 1779 that they are looking in using cadence at higher sustained speed to improve the PAS, so we can keep our fingers crossed
Adam, Any News on this ?