There is no doubt about it. Torque sensing is best and preferable over PAS (pedal assist sensor)(cadence sensing). That being said, not all e-motor system kits have torque sensing as part of their offering. I wish this were not so but alas it is what it is. My current e-motor came with both a hand throttle and a PAS sensor. I hooked up the hand throttle but I never messed with the PAS sensor. Just now I got it out of the box looking at it to see what would be involved in installing it. Of course, winter weather is upon us now so I don’t know if I will be messing with it before Spring when it warms up. I do need to get it installed for sure so that I will have “pedal assist”.
I paid big bucks for a torque sensor years ago.I had to buy a new crankset as the one from Catrike would not work with the torque sensor. I paid big bucks to install it. It didn’t work. A few months later I was having my trike worked on so I cautioned the mechanic that he needed to be very careful not to allow the torque sensor spindle in the bottom bracket to rotate as it has very delicate wires which will readily break.
He didn’t listen to me and he broke every one of the wires. It didn’t work before so it would not have mattered but I was getting ready to return it for a different type. I was very concerned about all the broken wires so my late brother in law who was a senior electronics technician repaired all of them for me. He did an excellent job on it but, of course, it was all for nothing since it didn’t work. Anyway, I got the other bottom bracket torque sensor but never installed it. It would have required me to purchase another crankset as the one I had bought for the first torque sensor would not work with the newest torque sensor. And the local bike shop could not locate a crankset that would work so I never installed it. Now I don’t have that e-motor installed anymore so it doesn’t look like I will ever use the new torque sensor. I don’t think much of that type of sensor. They are just too delicate and too difficult to install and set up properly. Now they have a different type which is not mounted in the bottom bracket. I like that concept much better.
Here is a DIY hack some might want to consider.
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