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-   -   Fuselage cable routing question (https://vansairforce.net/community/showthread.php?t=140383)

Bill Boyd 08-02-2016 10:21 AM

Thanks, Mike.
 
Quote:

Originally Posted by WrightsRV7 (Post 1099638)
Bill,
One last comment, I followed some advice on the forum about installing inspection panels (std vans used on stall warning indicator access) in the baggage floor just over the step attachment bolt, saves needing to drill through the bottom skin, allows for step adjustment and/or replacement, and gives great access to this area that is prime for running wires/conduit . Provides easy inspection in that covered area which I really like to have as well for many years to come.
Cheers, Mike

Pretty sure that my previous builder (shall I call him my ghost-partner) installed said inspection plates. I will look again to be sure. Haven't gotten that far yet except to catalog where the parts are now stored in my shop. I plan to use the anti-crush bushings in the step tubes, but access would still be nice.

Mike S 08-02-2016 10:40 AM

Quote:

Originally Posted by Bill Boyd (Post 1099754)
So, it's okay to drill holes in those side formers that attach to the spar web below the door opening

As I recall, they were already there, except one. I checked with the factory before drilling that one, and got the OK on it.

Pretty sure the plans show at least the pitot/static lines, and the main battery cable going through these holes.

Been 6+ years, so my memory may be a bit fuzzy......

Bill Boyd 08-03-2016 08:03 AM

Looks like only one hole to start with
 
I didn't even notice the hole was there, complete with bushing, until I took the pics last night to post here, but there is one predrilled factory hole at the top of the F-1004 C and D's. It's visible in the pics. Curiously, the plans I have (Rev. 0) show two holes per piece on pp. 28-1, 28-9 Fig 1, for example.

Good to know the factory approves additional holes here.


Mike, your pics show the F-1042's primarily, but I can see there must be some extra penetrations of the F-1004-C's and D's as well for the cables I see. Am I right?

Kyle Boatright 08-03-2016 08:32 AM

Bill,

I think you'll find another set of fore and aft holes in those bulkheads, up higher and hidden by the structure under the door opening.

Bill Boyd 08-03-2016 09:30 AM

...and
 
I'd be willing to bet you're right, Kyle. Will eat crow here tonight after I poke around up there with a fingertip to verify.

Looks like Mike's B+ fat wire goes through lower down, through his additional hole. It's all coming into focus now. I'm one with the Force...

Bill Boyd 08-04-2016 07:02 AM

Yep
 
Two factory holes in each piece. Upper ones hidden under the "gunwhale" just as predicted. And here I thought I had done a pretty thorough inspection of the previous workmanship that had brought this slow build kit to the QB-stage.

Bill Boyd 10-11-2016 11:59 AM

Quote:

Originally Posted by Mike S (Post 1099232)
Yep, what he said.

Conduit under baggage.



Side over spar/under door.



You can get a lot of wiring through this area if you take your time and plan the routing.

Mike, what size conduit did you go with, here?

bill@fusion4.net 10-11-2016 04:40 PM

None on the sides, just the bushings. Can access it later with side panels off, so no need of conduate

paul330 10-12-2016 07:46 AM

I don't know what you guys are putting back there!

I have ELT, strobe pack, twin ADAHRS, AP servo, OAT probe, VHF antenna, electric trim and tail lights and I managed to get everything through the two conduits on each side recommended in the plans.

As far as I am concerned, any other holes compromise the structure.


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