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  #1  
Old 05-02-2016, 03:52 PM
Dgamble's Avatar
Dgamble Dgamble is offline
 
Join Date: Aug 2005
Posts: 808
Default RV-12 Vernier throttle - what to do if the guts fall out

In an act of almost incomprehensible foolishness, I managed to violate the prime edict of MacFarlane: "Thou shalt not pull the cables too far out lest ye be smited with a plague of tiny little parts."

Six tiny little roller bearings, as it turns out.

Fortunately, you won't be the first to do it, and nor was I. An extremely helpful guy named Ben quickly replied to my desperate, plaintive plea for help (it was email, so tears would have been useless) to assure me that the repair is quite simple. He also shared with me that he had done exactly the same thing on his first day working there.

It is apparently so common that they created a how-to video and put it on YouTube a couple of weeks ago:

https://youtu.be/5RcjEd7lR4Q
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Dave Gamble
Grove City, OH

RV-6 N466PG Purchased already flying - SOLD!

Built RV-12
http://www.schmetterlingaviation.com

The above web blogs and any links provided thereto are not instructional or advisory in nature. They merely seek to share my experiences in building and flying Van's RV airplanes.
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Old 05-02-2016, 04:18 PM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 673
Default

Seemed a lot harder a year ago when I accidentally pulled mine out too far. Managed to get it back together after quite a bit of head scratching but wish I'd had the video ...
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Port Orange, Fl
RV-12 N121TK ELSA #120845
First flight 06/10/2015
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  #3  
Old 05-02-2016, 06:49 PM
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Dvalcik Dvalcik is offline
 
Join Date: Jul 2011
Location: Ellsworth, ME
Posts: 744
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I had a fellow RVr looking at mine 3 1/2 years ago, I won't mention his name, but he just flew the newest RV8 @ KPTW. He pulled it too far and you know the rest. I called McFarlane and they fixed it at no cost. I did buy it from McFarlane directly, at that time Van's was not selling them.

Dave give them a call;
866-920-2741 (U.S. and Canada)
785-594-2741 (Phone)
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David
EAA 1434 KBST
Belfast, ME
david@rv12pilot.com
2017 VAF Supporter


RV12 #568 EAB
* Started 9/30/2011
* 1st flight 8/30/12


http://www.rv12pilot.com
https://www.youtube.com/user/dvalcik

Last edited by Dvalcik : 05-02-2016 at 07:11 PM.
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Old 05-02-2016, 09:13 PM
smoothy58 smoothy58 is online now
 
Join Date: Feb 2008
Location: East Central Florida
Posts: 60
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Been there, done that......followed the you tube video and all is well.

A secondary benefit is you now have an understanding of how elegant the McFarlane vernier system is....:-)


Gerry Peterson
Merritt Island, Fl
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  #5  
Old 05-02-2016, 11:38 PM
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Tony_T Tony_T is offline
 
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Location: Seattle, WA
Posts: 1,172
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Me too. Was too mortified to admit it in the forum or even call McFarlane. Was able to find the parts that went flying and got it back together. The video would have been a godsend.
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RV-12 #202 -- Flying
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  #6  
Old 05-02-2016, 11:45 PM
rgmwa rgmwa is offline
 
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Location: Perth, Western Australia
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Count me in. Got it back together eventually.
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  #7  
Old 05-03-2016, 06:32 AM
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Bill Boyd Bill Boyd is offline
 
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Location: Landing field "12VA"
Posts: 937
Default Or, just leave the parts out that fell out

... and they'll let you fly in a formation clinic.
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  #8  
Old 02-14-2017, 10:45 PM
Gandalf Gandalf is offline
 
Join Date: Apr 2008
Location: Medford, OR
Posts: 267
Default ThumbsUpToMcFarlaneAviation

After kicking myself for loosing the bearings, I called McFarlane Aviation. A nice lady answered and sent me six new bearings at no charge. After watching the video, I was able to insert the six bearings.

Big Thumbs Up to McFarlane Aviation.

Jeff
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  #9  
Old 02-21-2017, 07:37 PM
AirHound AirHound is offline
 
Join Date: Oct 2006
Location: OFallon IL now, everywhere before
Posts: 158
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Quote:
Originally Posted by Tony_T View Post
Me too. Was too mortified to admit it in the forum or even call McFarlane. Was able to find the parts that went flying and got it back together. The video would have been a godsend.
I have one on a 12 I did not build. Please tell me what kind of situation causes the pieces to fly? So I can hopefully avoid a problem.

Thank you,
Doug in IL
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Old 02-21-2017, 07:44 PM
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Tony_T Tony_T is offline
 
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Location: Seattle, WA
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Quote:
Originally Posted by AirHound View Post
I have one on a 12 I did not build. Please tell me what kind of situation causes the pieces to fly? So I can hopefully avoid a problem.

Thank you,
Doug in IL
If the cables are not connected to the carbs it is possible to pull the knob out too far and that's when it comes apart. So, if you disconnect the throttle cables from the carbs just resist the impulse to pull out the knob Some of us were not able to resist even though the installation instructions specifically caution against doing so.
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RV-12 #202 -- Flying
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