Preferred method for Switch Anti-Rotation?

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Preferred method for Switch Anti-Rotation?

Postby NWade » Fri Sep 29, 2017 12:58 pm

Hi All,

As I wrap up my panel construction, I'm wondering about which method to use to ensure my switches don't rotate in the panel over time. Given the thin instrument panel material for the Sonex, I'm not happy about the prospect of drilling extra holes all the way through for anti-rotation tabs/washers.

Has anyone found success just using lock-washers in such a high-vibration environment? Is there another method you used?

Would love to hear about it (and document it on the forums for posterity)!

Thanks,

--Noel
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Re: Preferred method for Switch Anti-Rotation?

Postby Bryan Cotton » Fri Sep 29, 2017 1:34 pm

I like the anti-rotation washers. I do have some switches that I just torqued down good though. Not hard to retighten if needed.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX reserved
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dual sticks with sport trainer controls
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Re: Preferred method for Switch Anti-Rotation?

Postby lutorm » Fri Sep 29, 2017 3:04 pm

Use rectangular switches?
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Re: Preferred method for Switch Anti-Rotation?

Postby kevinh » Fri Sep 29, 2017 8:24 pm

lutorm wrote:Use rectangular switches?


That's what I did. It was about $30 to have a place on the web make this subpanel for me (including the aluminum, machining, black anodize and painted letters - they even have a free cad app that just makes these panels):

Image
Taildragger Waiex in progress, tail done, wings done, about to mate wings to fuse,
then cowl, canopy, paint (photos): flush rivets, turbo aerovee, acro ailerons
(I built my RV7A and happily flew it for about 500 hrs)
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Re: Preferred method for Switch Anti-Rotation?

Postby builderflyer » Sat Sep 30, 2017 9:34 am

No "on" and "off" markings? My inspector insisted on having them.

Art,,,,,,,,,,,,,,,,,,,,,Sonex taildragger #95,,,,,,,,,,,,,,,,,,,,,,,,Jab 3300 #261
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Re: Preferred method for Switch Anti-Rotation?

Postby kevinh » Sat Sep 30, 2017 10:47 pm

builderflyer wrote:No "on" and "off" markings? My inspector insisted on having them.

Art,,,,,,,,,,,,,,,,,,,,,Sonex taildragger #95,,,,,,,,,,,,,,,,,,,,,,,,Jab 3300 #261


They are on the switches ;-)
Taildragger Waiex in progress, tail done, wings done, about to mate wings to fuse,
then cowl, canopy, paint (photos): flush rivets, turbo aerovee, acro ailerons
(I built my RV7A and happily flew it for about 500 hrs)
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Re: Preferred method for Switch Anti-Rotation?

Postby builderflyer » Sun Oct 01, 2017 8:44 am

Excellent! That is a very "sanitary" looking subpanel you have there. Nice job.

Art
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Preferred method for Switch Anti-Rotation?

Postby drPete » Mon Oct 02, 2017 11:38 am

Nice work. Who ‘on the web’ did it for you?


Sent from my iPhone using Tapatalk Pro
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xenos.n25xb@gmail.com

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Re: Preferred method for Switch Anti-Rotation?

Postby kevinh » Tue Oct 03, 2017 10:50 am

drPete wrote:Nice work. Who ‘on the web’ did it for you?


https://www.frontpanelexpress.com/

It is pretty slick - you use their app and it will price it and ship it straight from the app. It showed up a week after I clicked buy. To keep the price low choose a thinish thickness on the aluminum and just have them drill the holes to #40 (then you updrill at home to the final size)
Taildragger Waiex in progress, tail done, wings done, about to mate wings to fuse,
then cowl, canopy, paint (photos): flush rivets, turbo aerovee, acro ailerons
(I built my RV7A and happily flew it for about 500 hrs)
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Re: Preferred method for Switch Anti-Rotation?

Postby drPete » Wed Oct 04, 2017 7:43 am

Very kool. Thanks for the great resource!
Pete
Xenos-B s/n XNB0010
xenos.n25xb@gmail.com

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