Castle - Make A Special Edition Monster

Originally Posted by Pdelcast

And lower efficiency, lower reliability, inferior locked rotor detection, no automatic timing...

Who's hype have you been listening to?

What about a hybrid system like the Speed Passion GT ESC? That takes advantage of the sensored starts, but can still do the automatic timing. I never heard of a sensored motor having lower efficiency; if anything, I've noticed that they run cooler for the revs they have to spin (I know they don't put out THAT much power, but they're no slouches- especially once you get into the lower turns).

If someone could put out a sensored system that can deal out the amount of power your guys' system puts out, I think it'd be a hit (screw ROAR... I could care less if it's ROAR legal). I'm pretty happy with my Mamba Max and Medusa setup though.

Methinks I need a CC BEC so I can run 3s happily all day.

[Pdelcast]

Originally Posted by Five-oh-joe

What about a hybrid system like the Speed Passion GT ESC? That takes advantage of the sensored starts, but can still do the automatic timing. I never heard of a sensored motor having lower efficiency; if anything, I've noticed that they run cooler for the revs they have to spin (I know they don't put out THAT much power, but they're no slouches- especially once you get into the lower turns).

If someone could put out a sensored system that can deal out the amount of power your guys' system puts out, I think it'd be a hit (screw ROAR... I could care less if it's ROAR legal). I'm pretty happy with my Mamba Max and Medusa setup though.

Methinks I need a CC BEC so I can run 3s happily all day.

Yeah, sensorless systems are significantly more efficient. The reason is that the controller can vary timing based on RPM, load, etc. and uses the OPTIMUM timing at all loads and RPMs.

With the sensorless startup algorithm we have, there is no need for sensors unless you are doing something like rock crawling -- so why have the reliability issues of the additional wiring harness and PCB, AND the additional cost?

Don't fall for the BS Hype -- sensored is worse in almost every way.

Now for rock crawling, where the motor needs to have torque when not rotating, sensored has a slight advantage.

You missed my point about the Speed Passion GT ESC though. It combines both worlds. Apparently, if you run something like a Novak on this ESC, it runs far better due to the variations in timing that the ESC can select, like you say.

I don't understand how having sensors creates reliability issues? I have an original SS5800 motor that's still going strong. It's been run on anything from 6 cell Nimh to 2s lipo to 12 cell Nimh. No problems yet and the motor has to be a few years old. I've read of the odd problem with a Novak motor here and there, but in comparison to some other motor issues, it's not NEAR as prevalent. Sure, more parts means a higher chance of failure, but for the sheer amount of motors they have out, I've only heard of a few reports where the motor was messed up due to sensors.

[Pdelcast]

Originally Posted by Five-oh-joe

You missed my point about the Speed Passion GT ESC though. It combines both worlds. Apparently, if you run something like a Novak on this ESC, it runs far better due to the variations in timing that the ESC can select, like you say.

I don't understand how having sensors creates reliability issues? I have an original SS5800 motor that's still going strong. It's been run on anything from 6 cell Nimh to 2s lipo to 12 cell Nimh. No problems yet and the motor has to be a few years old. I've read of the odd problem with a Novak motor here and there, but in comparison to some other motor issues, it's not NEAR as prevalent. Sure, more parts means a higher chance of failure, but for the sheer amount of motors they have out, I've only heard of a few reports where the motor was messed up due to sensors.

I'm sorry, I didn't miss your point. I'm saying there is no reason to run sensors AT ALL. Adding sensors to a motor / speed control has no benefit, and proven drawbacks, so why do it?

Reliability issues are because of additional small wires that can get pinched, broken, fatigued, etc, as well as an additional PCB in the motor that can get damaged or fail. More failure points in the system, lower reliability.