itchyfoot42 wrote:I have been told that torque sensing is internal. The controller to motor, and speed sensor to motor cables and connectors came with the TSDZ2. They are HIGO and I have disconnected and reconnected - still no assist. I have adjusted the wheel size from 05 to 32 with no change. All settings on the controller respond to inputs.
My "walk mode" works, but at only about 2mph. I'm not getting any boost at any torque level. The only wire that is not part of the system is the power wire from the battery to the motor. Both connections were made with XT60 connectors. Obviously power gets to the motor as the walk mode functions. Just not getting any torque response. Both controller and charger show battery as fully charged.
Since the walk mode works it appears I may have a bad board in the motor, or a bad connection somewhere. Bummer as I'm starting summer travels in our motor home on Tuesday. My LBS is closed Monday, and this is the first torque sense motor he's ever installed. Very outside chance that when I get the HIGO extension cable for the speed sensor and move it to the rear wheel the torque sensor may activate. As I'm lying to the motor now with the speed sensor on the crank I should get a response, if perhaps an inaccurate one. I hear no sound from the motor, and the motor is cool to the touch.
Any suggestions on what to try.
What do you mean by not getting any boost? It is not like it will push you forward at warp speed the moment you push hard on the pedals. The torque sensor is very subtle. It somehow measures the flex in the tube surrounding the axle and adds a little less power or a little more power depending on how hard you push.
If you browse this thread back to the start I think you might find a picture of it. In my experience you should be able to feel the difference between moderate to light pedalling and very light pedaling. Try that in assist level 4 and keep your candence about the same every time. Is there a difference? There should be a slight difference.
On the other hand, for me there would be no difference between heavy pedaling and riding out of the saddle even though the torque I put in my self while standing up would be a lot higher than just sitting down.
Taking out the torque sensor is a simple job. After taking off the pedals and the chainring, you need a pair of circlip pliers and a rubber mallet to wack the crank-axle out from the left side. The axle and the torque sensor will then pop out. Three small springs pushing the cadence sensor against the torque sensor will also fall out, so be sure to grab those before they disappear. Its a little more tricky to put it back together again, but a dab of grease on each of those springs should hold them in place when you push everything back into place.
See those two screws in the picture below? I think they might allow some sort of adjustment of the torque sensor. Mine works fine, so I left them the way they where, but perhaps you could try and see if it makes any difference?