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Old 03-24-2018, 12:45 AM
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longranger longranger is offline
Join Date: Mar 2007
Location: 45G, Brighton, MI
Posts: 1,829
Default F-704 Conduit Holes

The last job I wanted to do before removing the wings is to determine a good place to add holes for additional conduit through the F-704 bulkhead. My main objective is to clear the W-716 stick to aileron push tubes and the control column. The two locations Vans deems “best hole location for straight routing through both FWD and AFT bulkhead” are in the same bay with the fuel valve, and right where the fuel lines pass by, and only allow 5/8 holes. Depending on how much forward stick travel there will be, there may also be interference with the F-665 control column pushrod.

To more easily route wires through both bulkhead webs, and to preclude the necessity of removing the seat pans to route wires, I would like to use 3/4” corrugated conduit, so I’m thinking that a good spot will be in the bays between the inboard end of the wing spar stubs and the control sticks. It looks to me like centering 3/4” holes 2-3/8” below the top of the bulkhead (red crosses in photos) will allow 3/4” holes, will clear the top of the fuel lines, and will come out well above the W-716 push tubes. I will use Adel clamps to secure the conduit just above the large hole in the seat rib on the outboard side of that bay.

Is there any reason I SHOULDN'T put conduit holes at this location?

Miles (VAF# 1238, Paid up as of 2018)
RV-7 TU 904KM (reserved)
Wings Fitted and Finish Kit on site

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Picasa: Empennage Album, Wings Album, Fuselage Album

1955 Cessna 170B flying since 1982

'To get something you never had, you have to do something you never did.' -Unk.
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