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Over voltage module mounting failure - Plane Powere Alternat

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Dick Sipp

Joined: 11 Jan 2006
Posts: 215
Location: Hope, MI

Posted: Fri Feb 25, 2011 8:36 pm Post subject: Over voltage module mounting failure - Plane Powere Alternat

I  believe this issue may have been reported before.



I have an early model  PlanePower 60A internally regulated alternator on my RV-10. The last time the  cowl was removed for an oil change I noticed that the externally mounted  overvoltage module mounting had failed and the module was hanging loose by it's  single wire. The single small screw attaching the module was attached very close  to the edge of another opening in the rear sheet metal cover on the alternator.  The module is an integral part of a tab extending from the bottom of the module.  In my opinion this invoked a "tuning fork" effect amplifying vibration and  cracking the sheet metal cover. (Later versions of this alternator have the  overvoltage protection mounted internally) 



After consulting PlanePower,  the module was remounted to an area with more edge distance and also bedded in  RTV to prevent vibration.



Dick Sipp

RV-10 330  hours

   [quote][b]

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