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MGL EFIS and autopilot

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maxe59

Joined: 18 Jan 2019
Posts: 6

Posted: Sat Sep 05, 2020 2:17 pm Post subject: MGL EFIS and autopilot

I have a Trigear classic with 914 and Arplast prop. I am considering installing an MGL Challenger EFIS and possibly autopilot servos.

Has anyone out there installed a similar set up? If so, any tips, tricks or pitfalls to be aware of?

I look forward to hearing from someone.



Cheers

Max Earnshaw

ZK-VMC

Christchurch, New Zealand

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AirEupora

Joined: 01 Nov 2009
Posts: 186
Location: Dixon, CA

Posted: Sun Sep 06, 2020 5:39 am Post subject: Re: MGL EFIS and autopilot

I had the MGL Vogager EFIS  and used the Trio Servos.  I could not get them to work correctly.  MGL Torrance sold them to me, but they told me that Trio was the problem and Trio told me that the problem was with MGL.  



Before you buy an autopilot system for the Europa you need to determine if your plane flies straight  & level.  How much force is needed to bring the nose up or down once it leaves altitude.  For whatever reason by plane took more force to bring it back to lever than the Trio servo could deliver and would trip and shut down after a few minutes of trying.  If you go back into this Forum you find a lot of question on how to get them set up.  The roll axles worked and it was easy to install in the co-pilot seat area.  The big problem is the pitch servo and how it connects to the pitch torque tube.  I have to manufacture a clamp with a horn on it.  Europa now makes a pitch tube with the horn welded to it.



I know that the MGL servos worked very well with the later model of the MGL EFIS .  You might check out their forum.

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AirEupora

Joined: 01 Nov 2009
Posts: 186
Location: Dixon, CA

Posted: Sun Sep 06, 2020 5:41 am Post subject: Re: MGL EFIS and autopilot

I had the MGL Vogager EFIS  and used the Trio Servos.  I could not get them to work correctly.  MGL Torrance sold them to me, but they told me that Trio was the problem and Trio told me that the problem was with MGL.  



Before you buy an autopilot system for the Europa you need to determine if your plane flies straight  & level.  How much force is needed to bring the nose up or down once it leaves altitude.  For whatever reason by plane took more force to bring it back to level than the Trio servo could deliver and would trip and shut down after a few minutes of trying.  If you go back into this Forum you find a lot of question on how to get them set up.  The roll axles worked and it was easy to install in the co-pilot seat area.  The big problem is the pitch servo and how it connects to the pitch torque tube.  I had to manufacture a clamp with a horn on it.  Europa now makes a pitch tube with the horn welded to it.



I know that the MGL servos worked very well with the later models of the MGL EFIS .  You might check out their forum.

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pestar

Joined: 11 Apr 2007
Posts: 61
Location: Auckland, New Zealand

Posted: Sun Sep 06, 2020 1:01 pm Post subject: Re: MGL EFIS and autopilot

I have a DynAero MCR-4S based in Auckland NZ that has two Voyagers originally fitted with Trio servos which worked very well.   I replaced the Trios with MGL servos because I am going from a 2 to 3 axis auto pilot and can use the same CAN bus to control all 3.



Currently flying 2 axis, it took a little more tweaking to get the MGL's servos tuned and used the MGL forum to get help from an European colleague operating a MCR-4S (sad to see the old MGL forum disappear).



PM me if you require further information.



Cheers Peter

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_________________
Peter Armstrong
Auckland, New Zealand
DynAero MCR-4S (Do not shoot me Smile

maxe59

Joined: 18 Jan 2019
Posts: 6

Posted: Tue Sep 08, 2020 4:31 pm Post subject: MGL EFIS and autopilot

Thanks for the reply I will check out MGL forums. I was proposing to use MGL servos so maybe should work ok. My plane flies very true so hopefully that will be ok too.



Cheers

Max

On Mon, Sep 7, 2020 at 1:46 AM AirEupora <AirEupora(at)sbcglobal.net (AirEupora(at)sbcglobal.net)> wrote:



 	  Quote: 	
		  --> Europa-List message posted by: "AirEupora" <AirEupora(at)sbcglobal.net (AirEupora(at)sbcglobal.net)>

 

 I had the MGL Vogager EFIS  and used the Trio Servos.  I could not get them to work correctly.  MGL Torrance sold them to me, but they told me that Trio was the problem and Trio told me that the problem was with MGL.  

 

 Before you buy an autopilot system for the Europa you need to determine if your plane flies straight  & level.  How much force is needed to bring the nose up or down once it leaves altitude.  For whatever reason by plane took more force to bring it back to level than the Trio servo could deliver and would trip and shut down after a few minutes of trying.  If you go back into this Forum you find a lot of question on how to get them set up.  The roll axles worked and it was easy to install in the co-pilot seat area.  The big problem is the pitch servo and how it connects to the pitch torque tube.  I had to manufacture a clamp with a horn on it.  Europa now makes a pitch tube with the horn welded to it.

 

 I know that the MGL servos worked very well with the later models of the MGL EFIS .  You might check out their forum.

 

 

 

 

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 http://forums.matronics.com/viewtopic.php?p=498158#498158

 

 

 

 

 

 

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