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  #1  
Old 11-19-2020, 03:37 PM
WingnutWick's Avatar
WingnutWick WingnutWick is offline
 
Join Date: Jun 2013
Location: Lemoore
Posts: 205
Default Servo / Actuator use

Hello all,

I was pondering playing around with small electric servos/actuators to control things like cabin heat, carb heat, and oil cooling doors. I am curious if anyone has any experience with this and if there are any 12V servos out there that people know of or recommend?

Thank you!

Charles
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  #2  
Old 11-19-2020, 03:52 PM
krwalsh krwalsh is offline
 
Join Date: Nov 2009
Location: San Francisco, CA
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Default Ray Allen & Firgelli

You can use the Ray Allen Servos, which are used for trim, but can do other things as well: http://www.rayallencompany.com/products/servos.html

Another option is to use Firgelli Automations linear actuators: https://www.firgelliauto.com/

I have used both for similar applications. The Firgelli actuators are nice because some of them can be disassembled and have the limit switches moved to limit travel without any other feedback. That is a nice feature if you want to simply flip a switch one way or the other to open or close something.
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  #3  
Old 11-19-2020, 04:02 PM
andrewtac andrewtac is offline
 
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Default

I haven't installed them yet but bought some from ACS for the heater.https://www.aircraftspruce.com/catal...?clickkey=4543
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  #4  
Old 11-19-2020, 05:10 PM
agent4573 agent4573 is offline
 
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Default

https://www.tcwtech.com/product/cont...v=7516fd43adaa

Little more info about the TCW actuator kit.
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  #5  
Old 11-19-2020, 05:30 PM
rocketman1988 rocketman1988 is offline
 
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Default acuators

I have used the linear actuators from Actuonix.com (firgelli). They are awesome.

Do yourself a favor and get the LAC control board when you order MUCH cheaper.

The LAC board is awesome, I used it with potentiometers to control the 12v actuators...and some of the actuators have built in position sensing...I used one of the for my rudder trim.
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  #6  
Old 11-19-2020, 05:34 PM
PhatRV PhatRV is offline
 
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Location: Buena Park, California
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Default

When I was flying a lot of RC airplanes, I shop for servos from https://www.servocity.com/servos/

They have a huge range of servos, actuators, controllers, and mounting options. Most of the economical servos are in the 6V range so you may have to have a voltage down converter to use these servos. 12V servos are more expensive but you probably don't need that kind of torque
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  #7  
Old 11-19-2020, 06:29 PM
rocketman1988 rocketman1988 is offline
 
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Default servos

One issue you will have if you choose to use RC servos, is that, well, they are RC servos...

Typically 6V so you will need a regulator, and an RC PWM controller.

In contrast, the linear actuators can be ordered for 12V, switch operated, limit switches, computer controlled or potentiometer controlled. The LAC board from actuonix will allow these functions easily...and yes, the actuators can be had in a 6V RC version, too.
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  #8  
Old 11-19-2020, 08:19 PM
lr172 lr172 is offline
 
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I used futaba RC servos for heat control and airflow. They work v ry nicely with bowden cables and are light. Panel mounted controlers with knobd are available for $50.
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  #9  
Old 11-20-2020, 06:31 AM
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gmcjetpilot gmcjetpilot is offline
 
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Default

Quote:
Originally Posted by WingnutWick View Post
Hello all,

I was pondering playing around with small electric servos/actuators to control things like.....
I don't have links but have seen a ton of builder site's, manufactures of actuators and web store site's that sell to kit plane builders have tons of actuators and applications to do everything you mention. You are limiting yourself. There are linear actuators, RC model servos, and many other electrically controlled actuators...

My opinion (worth every penny you are paying for it) is KISS.... Keep It Simple and follow the plans. Push-Pull teleflex cables (mechanical) work well, simple, cheap and super reliable. You'll expend a lot of time researching, buying, designing, fabricating, re-designing, re-fabricating your electrical actuation when a teleflex cable would have been done. tried and true. I enjoy and encourage learning and experimentation however. If you want to learn about actuators look into robotics or RC modeling. You can do amazing things with actuators and micro controllers, learn a lot. However to open or close your cabin or carb heat I recommend a mechanical cable.
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Last edited by gmcjetpilot : 11-20-2020 at 06:41 AM.
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  #10  
Old 11-20-2020, 08:16 AM
rocketman1988 rocketman1988 is offline
 
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Default oops

I am guessing that in the world of experimental aviation, a true stock, follow the plans to the letter aircraft is a rare bird...
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