Originally Posted by
linberl
I'm reading that with something like the Bafang BBSxx I can set 9 levels of PAS (cadence) and input the exact amount of assist for each level with their programming cable. I'm beginning to think this might be the better choice for me. I don't spin fast. I also use the throttle
for a quick blip to start off from stops (bad knee - i am old) and don't really want to have to down shift and upshift riding on city streets. 90% of my riding is on flats, city streets and the occasional pathway, and i used to ride a single speed just fine when I could ride 2 wheelers
and loved the simplicity. i do very little shifting with my hub motor, just one cog up or down, period. With a torque system it sounds like i would need to shift a lot? I think the torque systems sound great for folks who ride varying terrain.
Respectfully, you are overthinking this. Go re-read the Dead Grandpa's post again. I think it is a succinct summation of what you can expect from a torque sensing system. The only people they don't work for are folks who need pavement ripping power from 1000W systems that are very hard on the plastic final drive gears of the stock TSDZ2. I had the option of getting a metal final drive but if that breaks ... $$$$. Shifting should not be that much of a chore that you avoid it. You may not have to do any shifting at all with a TSDZ2, I don't know where you ride. I do know that the TSDZ2 is available with a very neat torque arm that the Bafang Systems do not have. If you specify that your kit is for a recumbent the torque arm will be supplied and it grabs the boom in such a way that the motor cannot rotate to the top of the bottom bracket.