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914 Servo Problem -- broken copper wiper -- is there a fix?

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budyerly@msn.com

Joined: 05 Oct 2019
Posts: 286
Location: Florida USA

Posted: Sat Mar 20, 2021 4:32 pm Post subject: 914 Servo Problem -- broken copper wiper -- is there a fix?

Paul,

No, not this specifically.

I had a wiper wear through and begin to hesitate.  $500 and I was flying again.

Check ebay as there are usually a few on there.  Typically about $150-$250 and good for parts or sometimes good for a replacement.  But check the part number.

The Skido Rotax 914 marine engine used the same servo but you don't normally see these for sale.



Best Regards,

Bud Yerly



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Gilles

Joined: 16 May 2020
Posts: 33

Posted: Tue Mar 23, 2021 2:43 pm Post subject: 914 Servo Problem -- broken copper wiper -- is there a fix?

Le 21/03/2021 à 00:00, PCahill a       écrit :

     

      	  Quote: 	
		          	  Quote: 	
		  --> Europa-List message posted by: "PCahill" <cahillpa(at)gmail.com> (cahillpa(at)gmail.com)

Has anyone else seen this?  Can I buy a gear with the copper wipers, or maybe just the wipers themselves?  This happened suddenly: 2 weekends ago everything was perfect, last weekend -- blinking light.  This weekend -- disassemble until problem found.  I can't imagine that I'm the only one with what amounts to a potentiometer with a bad wiper.  This is certainly not a $500 failure (cost of new servo).  Thanks.



	
     	
     



          N914TX,

       

       Interesting damage indeed ! Thanks for sharing.

       

       The good news is, the servo is a motorcycle unit which can be       bought new or second-hand for just a few bucks.

       

       We got the info from an autogyro forum expert and bought one just       to have a look. We may still have it somewhere.

       If you're interested I could research the exact brand and model of       motor bike.

       FWIW

     -- 

       Best regards,

       Gilles

       http://contrails.free.fr

       http://lapierre.skunkworks.free.fr

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_________________
Best regards,
Gilles
http://contrails.free.fr

PCahill

Joined: 05 Feb 2018
Posts: 6

Posted: Tue Mar 23, 2021 5:33 pm Post subject: Re: 914 Servo Problem -- broken copper wiper -- is there a

Gilles,



I think everyone on this list would benefit from knowing about an equivalent motorcycle servo for a lot less cash!  I looked myself for such a part... no joy!



More information... Ronnie at www.flysmla.com is checking his stock of used servos.  Perhaps he can provide me with a serviceable part.



I also understand now that there is a '912 914 buy sell trade' group on Facebook.  I have not confirmed this, yet FB may be another good source of used parts.



More details... when I wrote "copper" wipers in my original post, I should have written "copper-colored" wipers.  The wiper is likely a copper alloy, maybe Cu-Be, maybe Cu-Ni, maybe Cu-Ni-Sn, or maybe a thousand other possibilities.  Therefore I am shying away from repair of the metal wiper itself.



Thanks!



Paul

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N914TX

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