RC India

General Topics => Beginners Zone => Topic started by: jnsahil on August 16, 2016, 08:05:38 PM



Title: motor cut off at 50% throttle with continue beep
Post by: jnsahil on August 16, 2016, 08:05:38 PM
hello frnds
my plane got crashed last week, after that i checked  my all electronics evn motor with 10-20% throttle, every thing was ok. but today as i try to fly my plane motor stop rotating at 50 %, and its heating. my winding turned to black (little bit),

important

-battery is charged and ok
-winding resistance of motor is ok (1.3 ohm each)
-there is no vibration or jamming in motor
- its running well upto 50%                   

plz help me


Title: Re: motor cut off at 50% throttle with continue beep
Post by: avesh on August 16, 2016, 10:25:23 PM
Might be timing issues or issue with your esc. Try changing your esc and see if it happens again. There is a possibility your esc might have screwed up your motor. 

When the receiver has a brown-out the Electronic Speed Controller goes into "fail-safe" and stops the motor from running.  See if your servos still work when the motor cuts out.

Does your motor start smoothly or starts twitchy ?
what current is it drawing and what voltage ? 


Title: Re: motor cut off at 50% throttle with continue beep
Post by: jnsahil on August 16, 2016, 10:49:44 PM
i din't check the voltage or current but some important issues are remarkable as

- motor takes current more than normal bcos it start heahing
-before stopping motor an unusual sound(humming) produce from fuse lag just a couple of inch back from motor mounting
-as the motor stops it start a continues beep like peeeeeeeeeeeeeeeeeee til i pull back throttle to zero
-and last it happens at exact 50%
-motor works up to full trottle without props but produces humming sound at higher speed

i hv reprogrammed esc. is there any motor bearing or shaft issue


Title: Re: motor cut off at 50% throttle with continue beep
Post by: avesh on August 16, 2016, 11:05:00 PM
i would check the bearing and the shaft. The crash might have damaged them. The peee  :giggle: sound might be from the bearings. I have had same issues with my 3800 kv motor at high rpm's.

Please specify the make model of motor and the esc.


Title: Re: motor cut off at 50% throttle with continue beep
Post by: jnsahil on August 16, 2016, 11:15:34 PM
Hobbymate HB2806 brushless motor, 1450 Kv
Hobbywing 30A speed controller

but i think problem has solved bcos after 20-30 testing my motor start smoking (lol)


Title: Re: motor cut off at 50% throttle with continue beep
Post by: avesh on August 16, 2016, 11:19:03 PM
RIP  :salute: .

Just be careful with your hobbwing esc, it might have burned your motor. I faced the same issue with compass warp motor, i was lucky enough to land it.  :hatsoff:


Title: Re: motor cut off at 50% throttle with continue beep
Post by: jnsahil on August 16, 2016, 11:27:48 PM
it will also burn soon bcos motor windings got black