Motor Problem TESTING Procedure?  
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All Forums >> Electric Aircraft Universe >> Brushed/Brushless motors, speed controls, gear drives >> Motor Problem TESTING Procedure?
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Motor Problem TESTING Procedure? - 7/11/2008 10:20:53 PM   
darticus


 

Posts: 1075
Joined: 2/22/2007
From: sparta, NJ, USA
Status: offline
I had a problem with my brushless motor jumping back and forth when it should be running. It was the motor as another one runs fine. Is there a way to run a brushless motor without connecting to an ESC? Like right from a battery? I took the covering off the 3 wires where they join on the bad motor to see if they were connected and they are. Would the problem be further into the motor coils? Is there Any correct way to test the motor with a meter? Thanks Ron

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Thanks for your help Guys, FORGEDABOUTIT! Ron
       Post #: 1

RE: Motor Problem TESTING Procedure? - 7/11/2008 10:42:01 PM   
DaveFlynn


 

Posts: 170
Joined: 2/21/2007
From: Arcadia, CA, USA
Status: offline
Check from the motor case to the wires with an ohm meter, should be open. Rev up the motor in a drill press and check for ac volts, should be the same on each pair of wires R-S, S-T, T-R.

(in reply to darticus)
       Post #: 2

RE: Motor Problem TESTING Procedure? - 7/30/2008 1:56:29 AM   
ron_van_sommeren



Posts: 226
Joined: 9/24/2002
From: Nijmegen/the NetherlandsNetherlands, NETHERLANDS
Status: offline
Several simple test methods:
http://www.wattflyer.com/forums/showthread.php?t=35216
&
http://www.rcgroups.com/forums/showthread.php?t=240993

Vriendelijke groeten Ron

(in reply to DaveFlynn)
       Post #: 3

RE: Motor Problem TESTING Procedure? - 7/30/2008 4:15:57 AM   
whitecrest


 

Posts: 86
Joined: 8/8/2007
From: Orleans, MA, USA
Status: offline
Also, make sure the motor is turning freely by hand. Without forcing, the rotor should turn very smoothly with only the cogging noticeable. It is very easy for the magnets to attract a bit of magnetic material in through the ventilation holes, especially if you landed in a dusty or sandy area. You might just need to remove the rotor and the debris inside. It doesn't take much to bind the rotor as the spacing between the magnets and stators is very small. This happened to one of my motors and the result was oscillation instead of rotation.

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Some things that count can''t be counted, and some things that can be counted don''t count. << A.E.

(in reply to darticus)
       Post #: 4

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All Forums >> Electric Aircraft Universe >> Brushed/Brushless motors, speed controls, gear drives >> Motor Problem TESTING Procedure?
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