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Elevator trim cutout switch

 
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johnwigney(at)windstream.
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PostPosted: Thu Apr 11, 2019 11:32 am    Post subject: Elevator trim cutout switch Reply with quote
<![endif]--> Normal 0 false false false EN-US X-NONE X-NONE <![endif]--> <![endif]--> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Arial","sans-serif";} <![endif]-->
I have watched the thread regarding runaway elevator trim with interest. My panel was built by Aerotronics in Billings, Montana (http://www.aerotronics.com/) and I have flown for over 1,000 hours without any trim issues. However, the photo and sketch diagram below show a trim cutout switch which Aerotronics included in my panel and this may be of interest to Europa owners. The switch is 3 position :-
  • Up = NORMAL
  • Center = OFF
  • Down (momentary spring loaded) = EMERGENCY REVERSE


Aerotronics’ comments about this switch are shown here :-
…….we started doing this after a Glastar crashed when they experienced a trim runaway. This switch allows you to at least stop the trim if it were to start to run away and even “feather” it back to a neutral position using the momentary “reverse” position. It an easy thing to wire up. I don’t have a professionally drawn schematic but I quickly drew it up and scanned it here for you to look at. I drew it two different ways, they are the same exact wiring just one is drawn pictorially and one electrically………

If you have difficulty seeing the images on the Matronics link, please contact me direct. I will be happy to send them to you.
Cheers, John N262WF, mono XS, 912S
Mooresville, North Carolina

  [img]cid:part2.67C9380D.4F0756A2(at)windstream.net[/img]     [img]cid:part3.6AC72F77.0F0BB296(at)windstream.net[/img]

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kingsnjan(at)westnet.com.
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PostPosted: Thu Apr 11, 2019 2:50 pm    Post subject: Elevator trim cutout switch Reply with quote
Thank you for sharing this one John, an excellent solution IMHO.

Please don't go to any trouble but if you happen to know the Part No of the switch I would be interested to know thanks.

Kingsley

do not archive

On 12.04.19 5:32 am, John Wigney wrote:

Quote:

<![endif]--> Normal 0 false false false EN-US X-NONE X-NONE <![endif]--> <![endif]--> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Arial","sans-serif";} <![endif]-->
I have watched the thread regarding runaway elevator trim with interest. My panel was built by Aerotronics in Billings, Montana (http://www.aerotronics.com/) and I have flown for over 1,000 hours without any trim issues. However, the photo and sketch diagram below show a trim cutout switch which Aerotronics included in my panel and this may be of interest to Europa owners. The switch is 3 position :-
  • Up = NORMAL
  • Center = OFF
  • Down (momentary spring loaded) = EMERGENCY REVERSE




- The Matronics Europa-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Europa-List
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freddythek10(at)gmail.com
Guest
PostPosted: Thu Apr 11, 2019 3:29 pm    Post subject: Elevator trim cutout switch Reply with quote
Did you know John’s an ex-Rolls Royce engineer?
Quote:
On Apr 11, 2019, at 3:49 PM, Kingsley Hurst <kingsnjan(at)westnet.com.au (kingsnjan(at)westnet.com.au)> wrote:
Thank you for sharing this one John, an excellent solution IMHO. Please don't go to any trouble but if you happen to know the Part No of the switch I would be interested to know thanks. Kingsley do not archive On 12.04.19 5:32 am, John Wigney wrote:
Quote:

<![endif]--> Normal 0 false false false EN-US X-NONE X-NONE <![endif]--> <![endif]--> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Arial","sans-serif";} <![endif]-->
I have watched the thread regarding runaway elevator trim with interest. My panel was built by Aerotronics in Billings, Montana (http://www.aerotronics.com/) and I have flown for over 1,000 hours without any trim issues. However, the photo and sketch diagram below show a trim cutout switch which Aerotronics included in my panel and this may be of interest to Europa owners. The switch is 3 position :-
  • Up = NORMAL
  • Center = OFF
  • Down (momentary spring loaded) = EMERGENCY REVERSE





- The Matronics Europa-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Europa-List
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