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  #1  
Old 04-24-2017, 10:30 AM
Jesse's Avatar
Jesse Jesse is offline
 
Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,636
Default RV-4 Garmin Roll Servo Install

I am installing an auto pilot in an RV-4, but there seems to be a great lack of documentation for the roll servo installation. Any pictures/processes from personal experience would be a great help.

Thanks.
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Jesse Saint (Saint Aviation, Inc. - VAF Advertiser)
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RV Hotel (hangar, room, car) at X35 in north FL

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Dynamic Prop Balancing, Prebuy Inspections, Condition Inspections, Repairs and Mods, Injector Tuning, Airframe, Engine, Panel Upgrades, Ferrying, etc.
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  #2  
Old 04-24-2017, 11:35 AM
Jaknjoan Jaknjoan is offline
 
Join Date: Jan 2005
Posts: 215
Default RV-4 roll servo installation

I don't want to remove the floor panel immediately behind the -4 spar for photos, but the long and short is that you attach a flange around the fore and aft control rod under the floor on the bottom side of the tube, with the equivalent of a hose clamp. The servo itself is secured to the floor and a very short actuating rod attaches the servo arm to the flange attached to control rod.

The installation is very tight, but it works fine if the geometry of the servo rod and flange are correct.

Jake Thiessen
Independence, OR
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  #3  
Old 04-24-2017, 11:37 AM
merlin3 merlin3 is offline
 
Join Date: Jul 2014
Location: ohio
Posts: 134
Default

Take pictures when you do it as i recently bought servos for my 4 and havent looked into where to mount the roll and pitch servos. I was thinking the pitch could go behind baggage door and tie into bellcrank there?
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  #4  
Old 04-24-2017, 11:58 AM
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RONSIM RONSIM is offline
 
Join Date: Feb 2008
Location: Largo, FL
Posts: 850
Default Just installed a Trutrak roll/pitch

in an RV-4 ---- Jesse, I just used the install kits and drawings/pics that Trutrak sent me ---- I had previously installed one in my -6A, so, although not the same airplane, not that much different as far as the technique -- I put the -4 roll servo on the rt. side --- of course you have to cut the notch in the floor member, but the Trutrak drawings showed it clearly.

Ron
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  #5  
Old 04-24-2017, 03:03 PM
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AX-O AX-O is offline
 
Join Date: Jun 2005
Location: SoCal
Posts: 2,257
Default

Quote:
Originally Posted by Jesse View Post
I am installing an auto pilot in an RV-4, but there seems to be a great lack of documentation for the roll servo installation. Any pictures/processes from personal experience would be a great help.

Thanks.
click on the "fuselage" section of my build. I have pics that show the aileron and pitch install.
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RV-4 fastback thread and Pics
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The information that I post is just that; information and my own personal experiences. You need to weight out the pros and cons and make up your own mind/decisions. The pictures posted may not show the final stage or configuration. Build at your own risk.
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  #6  
Old 04-24-2017, 05:41 PM
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Jesse Jesse is offline
 
Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,636
Default

Thanks all. I got it installed. Interesting how Garmin and Dynon have nothing for RV-4 roll. Only Trutrak does.
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Jesse Saint (Saint Aviation, Inc. - VAF Advertiser)
352-427-0285
jesse@saintaviation.com
RV Hotel (hangar, room, car) at X35 in north FL

Commercial ASEL/S A&P/IA EAA Technical Counselor

Dynamic Prop Balancing, Prebuy Inspections, Condition Inspections, Repairs and Mods, Injector Tuning, Airframe, Engine, Panel Upgrades, Ferrying, etc.
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