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04-10-2014, 07:56 AM
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Join Date: Dec 2006
Location: New Orleans, LA
Posts: 474
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Rudder Trim
Has anyone thought of adding rudder trim to their -14? If so, do you have any pictures/details? I saw a -10 with an access plate cut into the rudder for the trim motor. Thanks.
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Stoney
First RV-14 Flight 04/17/2016
Serial #140087, N214SW - Sold
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04-10-2014, 08:03 AM
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Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 4,196
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Quote:
Originally Posted by jswareiv
Has anyone thought of adding rudder trim to their -14? If so, do you have any pictures/details? I saw a -10 with an access plate cut into the rudder for the trim motor. Thanks.
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That's one way of doing trim, but is a lot of work. Mike S and Geoff Combs both did this to their RV-10s.
The other variation is just to put a hinge on the rudder and control it via servo. Many folks have done this, see Tim Olson's and Vic Syracuse sites.
The option I went with is to use the Aerosport Product Rudder Trim. Takes less than thirty minutes and is easy to install.
There are others that will recommend just adhering a trim tab to the rudder.
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04-10-2014, 09:21 AM
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Join Date: Nov 2007
Location: Yarmouth, Nova Scotia
Posts: 2,408
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I built the servo trim you are referring to in our RV-10 by cutting the TE. With Tim Olson comment that he was thinking of leaving this feature on the RV-14 because of the aerobatic capabilities I did not install one in my RV-14 rudder. I plan on using one of Geoff's spring kits mentioned above.
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Thanks Ron
RV-10 SOLD
RV-14 Flying
AirCam flying
Last edited by Ron B. : 04-16-2014 at 04:14 PM.
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04-10-2014, 12:06 PM
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Join Date: Sep 2007
Location: pittsburgh pa
Posts: 533
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I also have a spring biased "trim" on the rudder of my -6. It is simple works well does not effect primary flight control structure. Highly recommended
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Gary Reed
RV-6 IO-360
WW 200 RV now an Al Hartzell for improved CG
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04-16-2014, 01:11 PM
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Join Date: Feb 2005
Location: Wisconsin
Posts: 612
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I did add the cutout access panel in the side of the rudder, and plan to add the same trim as my RV-10. I changed my mind after my last X/C flight. I just like having the trim too much and like the way it works. I haven't riveted on the hinge section yet, but will before I paint.
Tim
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04-16-2014, 03:45 PM
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Super Moderator
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,626
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Nice
I like it too. 
__________________
 Vic Syracuse
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
Kitplanes "Unairworthy" monthly feature
EAA Sport Aviation "Checkpoints" column
EAA Homebuilt Council Chair/member EAA BOD
Author "Pre-Buy Guide for Amateur-Built Aircraft"
www.Baselegaviation.com
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04-16-2014, 04:14 PM
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Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
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I put elec rudder trim on my Super 8 mainly due to the 2 cruise speeds I fly. 4 banger speeds with my buds, and Super 8 speeds alone. When I had my metal prop, I used this quite a bit. And only in the 2 cruise configurations. Since I have gone to the Hartzell composite, I dont use it at all, even though Im flying the 2 cruise speeds still.
My advice, Unless you intend to cruise at 2 different speeds that span >25kts, elec trim is of no use and a single fixed trim tab is all that is necessary. Elec trim is of even less use if you use a light weight prop.
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Kahuna
6A, S8 ,
Gold Hill, NC25
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04-16-2014, 05:28 PM
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Join Date: Feb 2007
Location: San Diego, CA
Posts: 1,670
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Just curious as to why/how the prop would make a difference in rudder trim? 
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