Does this look like a knackered esc ?

[johnrs]

Hi

Wasn't sure where to put this post so its in here.  Think I know why my first test flight ended in disaster and it looks like I have a faulty esc.  taken a short video so you can see what I mean

if I move the esc onto another motor it does the same.  when there are no props on the motor seems to spin up high while the other dont.

see what you think.

Thanks

http://youtu.be/P7-Orouh-U8

[Longnail]

Have you ever set each ESC and motor separately ?
Den

[johnrs]

have done that or I think I have done it right

I have done the on board method by putting the yaw pot to 0 and also putting the esc directly into the receiver throttle.

Just done the esc calibration again and also moved that esc to another motor and its still the same   

Thanks

[Longnail]

I had similar trouble and the only way was to plug ESC and motor straight into a rec and power up, one leg at a time. You must get the full "power on tune"
when all done it should work,

[johnrs]

when I do that should the motor be spinning ?

[teslahed]

The way the motor is jittering - I've had motors do that when there is a lose connection. There could be some dodgy soldering somewhere, a dodgy bullet connector, even a broken wire, or it could be that the esc itself is faulty somehow.

I would definitely recommend doing individual throttle calibration for each esc like longnail says - even twice. I've found odd bugs disappear sometimes when i do that, and sometimes on the second attempt - but you may be unlucky too and have a duff esc.

You bought the thing as part of a package didn't you? - I'd definitely be emailing the guy you bought it from asking for his opinion with a link to your video.

Whatever is causing the problem, you are right to think it's going to stop you flying.

[johnrs]

Will do the calibration again.  Just want to check - when I do that should the motor be spinning ??

Also so all esc have to be the same make or could I drop another 20A esc on there and it be all ok?

Thanks

[teslahed]

The motor should not spin when you calibrate it. If your throttle is set to maximum when you first connect the receiver and ESC the ESC should detect this and go into calibration mode and start beeping. When it stops beeping throttle down and it will beep some more.

The reason people recommend taking the props off before calibrating your ESCs is that if something does go slightly wrong and the motor doesn't go into calibration mode, if can throttle up to 100% instead and come flying at your face.

Electronic Speed Controller Calibration guide

[Gaza07]

Dont the esc's have to be calibrated through a KK board, maybe the motor that seems to be on the edge of starting is calibrated the same as the others,
It might be worth finding out what the KK calibration routine is for the firmware being used and try that it normally involves turning some of the pots to minimum,
but this may  vary from different firmware versions