Is 13/16 hole better for wing wireing conduit than 3/4 hole

[Mike Balzer]

I have read that some builders are drilling the hole for the wing wireing to 13/16 instead of 3/4 or making the hole slightly larger than 3/4 to ease the pulling of the conduit. What would be the best way to go.

[Wicked Stick]

I used a hole size small enough for the inner ridges of the conduit.
Then I slit the conduit which made it easier to run.

The slit ends up on the bottom just incase any moisture or water ever gets in there, it can drip out the bottom.

Makes it easier to fix any snag's too since you can open it up with your fingers if needed, but stays pretty closed on it's own so no wiring will escape unless on purpose.

Of course, the conduit is also pro-sealed at each rib too.

Try to make sure you run the conduit between any rivet holes so you won't have to buck behind it when doing the bottom skins.

[bullojm1]

Mike-

My general theory on drilling any hole is to always make it as small as possible. I drilled 3/4" holes for the conduit and didn't have all that much trouble pulling it through. It maybe took 15-20 min per wing.

[jerryb]

I went with the 13/16" hole for the conduit. Alittle easier to pull the conduit through and I prosealed it to the ribs. I talked with the RV builders in my EAA chapter and they were split about 50/50 on 3/4 vs 13/16 holes for the conduit, so my guess is that either size will work.

Jerry B
RV-7
Still working on the wings.
Wheaton, IL

[Mike Balzer]

Thank you for your comments,

My uni-bit stopped at 3/4 and I located the hole per vans blue print that have been hard to find but I have seen it on other builders web sites. I like the idea about moisture being able to run out by slitting it on the bottom. Have any rv had problems with water in conduit?

Thank you,


Mike Balzer


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