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  #1  
Old 11-19-2009, 07:52 AM
FLYIN9A FLYIN9A is offline
 
Join Date: Apr 2005
Posts: 109
Default Trim servo speed controller

JUST GOT MY 9A FLYIN AND AM IN TESTING PHASE. I HAVE A RAY ALLEN ELECTRIC ELEV TRIM SYSTEM. WAY TOO SENSITIVE. RAY ALLEN HAS A SPEED CONTROLLER TO, I ASSUME SLOW DOWN THE SYSTEM. DOES ANYONE HAVE EXPERIENCE WITH THE SPEED CONTROLLER. DOES IT WORK WELL? CAN YOU EMAIL ME AT JDMEDIC@COMCAST.NET WITH ANY INPUT.

JOE
N459RV
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  #2  
Old 11-19-2009, 08:07 AM
gpiney gpiney is offline
 
Join Date: Jan 2005
Location: The Beautiful NJ Shore
Posts: 409
Default

Suggest you look at TCW Tech's 'Safety Trim'. Speed controller with safety features. http://www.tcwtech.com/
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  #3  
Old 11-19-2009, 10:05 AM
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Vern Vern is offline
 
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Location: Peachtree City, Ga
Posts: 1,040
Default Speed control

I used the Matronics unit on my 6A.
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  #4  
Old 11-19-2009, 10:22 AM
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boom3 boom3 is offline
 
Join Date: Dec 2006
Location: Sumner, WA
Posts: 722
Default

I'm not done building but I'm interested in the same question.

An inflight adjustable speed control would be best. (maybe with a switch?) I've heard from others that a slow servo is great at cruise speeds but can be annoyingly slow in the pattern. Likewise regular servo speed in the pattern is great but too fast in cruise.
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  #5  
Old 11-19-2009, 10:57 AM
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kentb kentb is offline
 
Join Date: May 2005
Location: Canby, Oregon
Posts: 1,786
Default The Ray Allen system work fine.

The only problem that I have had with mine was I set it up backwards. It trimmed faster when flaps were up and slower when flaps were down.
After I switch the wires around and adjusted the slow speed voltage, it has work great since.

Kent
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  #6  
Old 11-19-2009, 11:04 PM
N91CZ N91CZ is offline
 
Join Date: May 2006
Location: Woodland, CA
Posts: 104
Default 5V voltage regulator to the rescue

I used a simple 5V voltage regulator in the wiring harness to slow the trim down for cruise. A switch on the panel selects either the 5V source or full bus voltage when high rate is needed.


http://www.n91cz.com/VideoClips/Trim...lRate_0001.wmv higher res
http://www.n91cz.com/VideoClips/Trim...lRate_0002.wmv
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  #7  
Old 11-20-2009, 06:51 AM
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L.Adamson L.Adamson is offline
 
Join Date: Apr 2005
Location: KSLC
Posts: 4,021
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I found that I never needed a speed controller. Just quick blips on the hat switch do a good job. I have both elevator & aileron trim.

L.Adamson --- RV6A
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  #8  
Old 11-20-2009, 08:01 AM
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db1yg db1yg is offline
 
Join Date: Mar 2006
Posts: 629
Default

Hi Joe,

Had the same issue with my 9a when I first flew it back in 2006. That big elevator trim tab makes for a very sensitive trim issue at cruise speeds. I bought the Ray Allen speed controller, got it set properly after a couple of flights, and it has worked great since. One suggestion, if you do go with the Ray Allen, mount it under the floor pan but drill a very small hole so you can access the speed control screw with a small screwdriver from the cockpit --makes for a much easier task of adjusting.

Cheers,

db
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  #9  
Old 11-23-2009, 08:34 PM
DENMACRES DENMACRES is offline
 
Join Date: Aug 2008
Location: MONTGOMERY, TX.
Posts: 89
Default TRIM SPEED

I set up my -6 with a speed controller, it has a swt. that changes it to fast when the flaps are not in full up. Works great. 700+ hrs.
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