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Flap Motor repair attempt report

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vshimsl(at)live.com
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Posted: Mon Oct 19, 2009 6:12 pm Post subject: Flap Motor repair attempt report

Hello C



I attempted to repair my flap motor and this is my report.



Problem:

Wires broken frayed at entry to flap motor housing.



Solution:

Not touching the worm gear i marked case and dissassembled the motor. The only items removed from the airplane were the end C brush assembly and outside case (stator?) of motor.

Discovered that the wires entered the black plastic brush assembly.

My assembly snapped together and wasn't glued thus I was able to separate two halves with a Jeweler's screwdriver.

Soldered new wires to stubs inside housing. Cavities inside housing allowed me to reroute the wire without the solder joint causing an interference problem.



I cleaned the rotor and brushes. Rotor was clean and didn't have much oil on it. The brushes however had a kind of varnish coating. Burnishing the brushes fixed that. I didn't do the grease removal that is mentioned a lot on the list. Why?



I took the rotor in my hands and manually rotated it to determine the load the motor felt raising and lowering the flaps. The feedback force is essentially zero even with my leaning on the flaps to restrict their movement. I saw no evidence of grease working its way up the rotor. 



I reassembled the motor and tested. Works great and I didn't spend $300 plus bucks for a replacement.



Will let you know if motor goes south in future. But for now C I need to work on my 40 hours so as to make my RV-8 a  respectable airplane.



Vince H.

RV8 N8432 20 hrs. 

 		 	   		  Hotmail: PowerfuL/go/171222986/direct/01/' target='_new'>Get it now.  [quote][b]

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