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  #1  
Unread 10-08-23, 09:11 AM
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YankeeClipper YankeeClipper is offline
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Cowl flap conversion

Anyone know if the conversions to manual operation are still made? Mine (on the front) has warn out and no longer can move the flap when in flight (works fine on the ground, even stilted with gear up).

Don't see the mod on any of the usual STC sites.
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  #2  
Unread 10-09-23, 07:03 PM
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There's nothing special about the cowl flap motor other than its oddball application. These DC motors can be rebuilt fairly reasonably if you use the resources on this site. Some owners report $300 or less rebuilds.

Last edited by mshac : 10-17-23 at 10:45 AM.
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  #3  
Unread 10-09-23, 11:39 PM
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Mine was already converted to a manual when I got it. But it no longer works, as described.

Anyone know if the conversion is still available so I don't have to convert back to original?
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  #4  
Unread 10-13-23, 08:59 PM
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Its owen bells (aviation enterprises) STC.

Don Nieser may still have parts for it as he provided owen with the parts to make his stc kit.

I have the manual cowl flaps and its a bitch to keep them closed, they keep wanting to pop open under load 👎
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  #5  
Unread 10-17-23, 08:34 AM
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I spoke to both Don and Skymaster Mods &Parts (formerly Aviation Enterprises). Don has rebuilt motors, and SMP has new (or perhaps reman) motors for front and rear at 2.5 and 3.1k respectively.

SMP will also rebuild the vernier part of the manual actuator (the bits that mount right up front on the instrument panel, with teeth inside that wear out ) for $500. You send it to them and they will send it back.

Last edited by YankeeClipper : 10-17-23 at 08:37 AM.
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  #6  
Unread 10-17-23, 10:45 AM
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The $300 option:

http://www.337skymaster.com/messages...p+motor+repair
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