COBRARACING

Sensor issue could be your sensor cable or the sensor board on the motor.I know of someone else that had the same issue and the motor was new and it was a sp motor

sgp-chris

I tried changing the sensor cable, it didn't help. I also tried another SP motor with the same results....

hyujmn

iTrader: (27)

I had a similar problem. Tried two different motors. Turns out both motors had bad sensor boards. Once I changed them everything was fine.

sgp-chris

I just tried a third SP motor. Brand new out of the box, and I had the same issues. 3 different sensor cables, and nothing helped.

Tried connecting the esc with my lcd program box, and it wouldn't connect. Tried to connect thru my laptop, and still nothing...

Then I tried connecting my Justock esc with the lcd box, and also the laptop. And it worked perfectly...

Something must be wrong inside the V3.1 esc...

COBRARACING

Are you using the programming port to connect ? Or the rx cable .Also remember you will need to have your radio on and no signal input or the rx cable removed because the rx takes precedant over the programming port

peter.

thank you very much COBRA RACING (ANGELO ECONOMOU)

for your suport for me hw v.3.1 with setups i've had a lot esc but the suport was never as good as hw thank you very much for that

King regards peter

sgp-chris

I was using the RX cable to connect both esc's. It work ed on the JUstock, but not the V3.1

TryHard

iTrader: (4)

On the v3 you need to connect via the programming port. Connecting via the rx cable does nothing.

COBRARACING

Your welcome anytime

sgp-chris

Well that explains ALOT! Thank you, I will try that when I get home. I uset the RX cable because it was show in the program box manual...

I am hoping that a firmware upgrade is the solution...

Monsta

iTrader: (4)

I was that person.
I bought the SP 13.5 as a stopgap due to my Mach2 letting the smoke out. the SP now only has about 20min run time on it - if that. running 3.7fdr and only temping at 65deg.

I would get maybe 2 laps before the motor would cog down low and behave as if in a boosted profile (half power for 2sec then normal - in blinky profile). Easy looking as if it was a ESC issue. Ended up trying another reedy and the problem went away.

I just wanted to say thank you to Angelo again. Fantastic and quick support for an issue that had nothing to do with the ESC (v3.1)

COBRARACING

Its my job so your welcomeNow go out there and have fun lots of it.

sgp-chris

My current firmware is V3.1_121129_Beta

Is that okay, or should I upgrade to something else???


EDIT: Next piece to the puzzle. I've again tried 2 different SP motors, and 3 sensor wires. When I give it full throttle and let go again, the motor will only stop working when it stops at a certain point. I watched the set screw on the pinion, and it would only refuse to rev again when it stopped at the exact same angle of rotation. I switched motor, and it was the same result with both. But the rotation angle was different between the motors.

If it stopped at any otner point of rotation, I could rev it again with no issues.

Does this mean I have a sensor problem inside the esc? Changing wires didn't help the issue.

It also sounds abit rough when it runs. Not like when it runs completely withpout a sensor, but something in between. It's not a nice smooth sound. It goes for both motors.

COBRARACING

The software is correct.

It sounds more like a batch of faulty motors from sp .It is a sensor board issue the other issue could be that one of the phases on the esc is damaged but i dout it .

Please run a simple test for me pull out the sensor cable and let me know if it runs properly without the cable attached

sgp-chris

I don't think it's a bad batch of motors. There are aproximately 6 months between the 2, I just havent used one of them before now. They are also not the same turn (13.5 and 17.5) But I hope youre right, it would be a easier fix for sure

It can't be something to do with the esc getting too hot while soldering New wires on it? I removed all the coloured ones, and wired it up again with all black wires. The coloured ones where a pain in the butt to get off... :/

I will do the test when I get home

EDIT: I did the test you afsked me 2, and the motor runs fine without the sensor cable. A little rough, but no stops.

I first attached the sensor to the motor, gave it some throttle to verify where the motor stops. I did that a handfull of times, and it was the same spot each time. I then removed the sensor cable while the motor was in the "stuck" position, and it wasn't stuck any more. I did that a bunch of times aswell, and there where no issue when the sensor was out of the equation...

ESC sensor problem???