Passing wires through the baffles

Discussion of aircraft electrical system design, construction, and problems.

Passing wires through the baffles

Postby Bryan Cotton » Sun Feb 04, 2024 1:08 pm

When I wired up my aircraft, several wires were passed through small holes/grommets and then terminated. Very neat, until you have to pull the engine or baffle and have the soul-crushing realization that you need to unterminate all the wires and then do it over. So when I was pulling my engine the last time, for the sake of reshimming the engine up & replacing the rear main seal, I went a little nuts and cut some passages to the breather hole. This allowed me to snake the wires over to that hole and then pull them out. I didn't have to remove my type K connectors or anything. It was great, but then I had to figure out how to put it back together. Here is my solution.
baffle penetration thing apart.png
baffle penetration thing apart.png (603.29 KiB) Viewed 1850 times


I have not decided if the clecoes will become nutplates, screws and nuts, or if I will just use aluminum pops and drill them out when required.
baffle penetration thing clecoed.png
baffle penetration thing clecoed.png (557.5 KiB) Viewed 1850 times


If you have not done your baffles yet, you may want to consider something similar. It would actually be much easier if you drilled the holes in the baffle and the cover plate at the same time, rather than try and match them up after.

Also for some of my wires I had to cut the grommet to put it back in. With this setup that would not have been required.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Passing wires through the baffles

Postby Bryan Cotton » Sun Feb 04, 2024 8:49 pm

I've decided on aluminum rivets when it's time to reinstall. Trial fit:
front side baffle penetration.png
front side baffle penetration.png (690.79 KiB) Viewed 1802 times


The other side:
back side baffle penetration.png
back side baffle penetration.png (718.47 KiB) Viewed 1802 times


One of my buddies sent me his solution:
Rob's baffle penetration.png
Rob's baffle penetration.png (315.92 KiB) Viewed 1802 times
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
User avatar
Bryan Cotton
 
Posts: 5496
Joined: Mon Jul 01, 2013 9:54 pm
Location: C77

Re: Passing wires through the baffles

Postby Bryan Cotton » Tue Feb 20, 2024 11:36 am

Finished:
Screenshot_20240220-093118-679.png
Screenshot_20240220-093118-679.png (733.18 KiB) Viewed 1395 times
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
User avatar
Bryan Cotton
 
Posts: 5496
Joined: Mon Jul 01, 2013 9:54 pm
Location: C77

Re: Passing wires through the baffles

Postby Weatherpilot » Wed Feb 21, 2024 2:24 am

Nice Bryan.
Greg Hubert
Sonex A #972 TD
Aerovee Prince P-Tip / Dual stick
Third Owner
Eastern Panhandle of West Virginia
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Posts: 78
Joined: Tue Sep 27, 2022 9:23 pm
Location: Eastern Panhandle - West Virginia


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