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Old 08-22-2021, 01:01 PM
flightec flightec is offline
Join Date: Jul 2021
Location: Marshall, NC
Posts: 5
Default Wiring the RV 12UL

Hi, I asked this on a facebook RV site but didn't get an answer so thought I ask here.

I'm finishing an older RV-12 UL build and I'm just about done with the wire harnesses. I've noted some pictures posted of 12is wiring going straight down and not under the rudder tubes as my 31B drawings stipulate. Is there a change that give relief from running under the tubes? I would LOVE to not have to have all that crammed under the rudder tubes!


P.S. If anyone is interested, I will do a post on what to look for when buying a used in, how much I'm having to fix....and what will definitely not pass an inspection.
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Old 08-22-2021, 09:38 PM
12vaitor 12vaitor is offline
Join Date: Aug 2012
Location: Panama City, FL
Posts: 191

If you are building as an ELSA, you have to follow the KAI instructions. If you are building as an EAB you can run the wires however you please. The wires actually go over the rudder tubes. Some of us have added a second cross over (F-12125) on the other side of the rudder tube support block.

John Salak
RV-12 N89HS
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Old 08-22-2021, 11:48 PM
rv9builder rv9builder is offline
Join Date: Jan 2005
Location: Irvine, CA
Posts: 940

Hi Dave,
Check your private messages.
RV-12iS Fuselage
RV-9A Project: Sold

VAF donation made for 2021
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Old 08-23-2021, 02:50 AM
mike newall's Avatar
mike newall mike newall is offline
Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,177

We found that the kit has suffered from technology creep !

As originally designed, the number of cables going that route were less than a more modern version. We used a second passing and used common sense to group the cables in a less restricted manner.

I cannot believe that any inspector would disagree with that.
"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q

Donated in 2021
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Old 08-23-2021, 10:24 AM
flightec flightec is offline
Join Date: Jul 2021
Location: Marshall, NC
Posts: 5

Thank you for the replies, I kinda felt that might be the case as it is 10 pounds of stuff going into a 5 pound bag!

I'm trying to keep everything to ELSA standard up until I pick my engine, which will most likely make mine an EAB. I'm surprised Van's haven't written an E.O. (Engineering Order) to give some relief on the wire way call out.

Thanks again!
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