Sensored vs Sensorless motors

[georgefromvt]

Good tutorial regarding Sensored vs Sensorless motors.
http://www.teamnovak.com/tech_info/brushless/sensor_vs_sensorless.html

 

[snellemin]

Novak is build for racing and the rules they have to abide by. When it comes to speed, sensorless with slotless 2 pole motors are still king. Check out RC dragracing.

 

[georgefromvt]

Novak is build for racing and the rules they have to abide by. When it comes to speed, sensorless with slotless 2 pole motors are still king. Check out RC dragracing.

But for those who live in very hilly areas, torque is favored over speed.

 

[snellemin]

I like torque as well, hence the Magic Pie that I'm running. But I also like to have some decent top speed, thus the high voltage setting for the increase in rpm. But I am running it in sensorless mode and no issues with hill climbing.

Sensored is nice to have if you drive at crawling speed or try to pull a bus.
You can increase your speed with some timing advance at the cost of amperage with sensored. With sensored I can go as high as 50 degrees of timing advance vs 30 degrees with sensorless with my toys. But my sensorless Hacker and Lehner motors are faster, smoother and more powerful than any Novak motor in the same motor class.

With my RC toys I can creep just as slow as sensored motors, by using quality motors, gear ratio's and ESC's.

 

[MadRhino]

I tried sensorless vs sensored DD hub motor in my mountain trails. It's a no contest: Sensorless is crap, in that particular situation at least. An RC setup might be different, especially if the motor is spinning already and engage traction with a slip clutch. That is at the cost of noise though. For silent power in the mountain, nothing can beat a sensored heavy hub motor and a big controller.

 

[snellemin]

I'll relocate my controller and run my bike on the cypresswood trails in Houston this weekend. I'm not sure if the Lyen controller will be up to the task though.