Replies to This Discussion

Permalink Reply by ward on August 6, 2012 at 7:26am

I am getting the same situation on my octo.  Each time I calibrate my ESC's I get a different motor stalling out or running slow.  I have tried the APM2 ESC calibration and the direct-to-receiver calibration. Both seem to calibrate properly.  As soon as I reboot the APM2 and Arm I get the same strange slow ESC's.  Not always the same motors running slow either.  Very strange...

• ▶ Reply

Permalink Reply by Palmer Eldritch on August 6, 2012 at 7:51am

In my case it's the same motor every time. I don't think ESCs have anything to do with this. I just need to know for sure if the the motor's fault.

• ▶ Reply

Permalink Reply by ward on August 6, 2012 at 10:17am

Not sure what it is.  I think I have two bad ESC's.  The troubled ones are running very hot.  A blast of canned air (upside down) causes them to run MUCH better.  Eight new ones with SimonK code on order.

• ▶ Reply

Permalink Reply by m00se on August 6, 2012 at 12:08pm

are they cheap motors? i had 2 out of six motors dead out of the box, well not dead but running slow and stalling,

if the problem follows the motor when you move it around then it must be the motor

• ▶ Reply

Permalink Reply by Palmer Eldritch on August 7, 2012 at 2:00am

http://store.jdrones.com/product_p/ac2836358.htm 

Can't say they're cheap.

• ▶ Reply

Permalink Reply by m00se on August 7, 2012 at 11:54pm

yes they are,

anything under 100 dollars is cheap

• ▶ Reply

Permalink Reply by Geir Engebakken on August 8, 2012 at 1:02pm

I have had the same issue with stottering motor, and it stottered on 2 different ESCs so I  examined the leads going into the motor and discovered that one lead was broken. Managed to open the motor and get the lead soldered back on, and it worked again. Good luck!

Geir

• ▶ Reply

Permalink Reply by Emmpunkt on August 8, 2012 at 2:11pm

Looks like one Phase is missing.

Could be bad soldering at the plugs or at the motorconnection.

Try to pull at the cables (not to hard!!) and watch the shrink hose. If it stretches, then there is the fault.

An Ohm-Meter would be helpful

Dont try to give full throttle with this fault, it will burn your ESC.

• ▶ Reply