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Rack construction

51273 Views 67 Replies 23 Participants Last post by  Anchorless
I'm knee deep in "figgerin."

I got up and pulled out a plug over one of the roof rack attachment points.

It didn't end up looking like I thought. (Photos coming)

The threaded receiver is depressed into a small cavity. I'm going to ponder that a while.

Question: Are some of the other plugs in the roof covering access for wiring to the interior?

I'm going to run some wires for solar and LED lights inside the rack and want to make sure I get them to the right place. :) I'd hate to drill a hole if I don't need to.
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Not even the forum busybodies would have a problem if you used an extra mounting hole to run cable. Ok, they would get a little clenched, but it would pass.
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Question: Are some of the other plugs in the roof covering access for wiring to the interior?
I think they are, i plan to pop one open this week for my solar install. The roof is not reinforced at this point, so it's probably not intended for mounting anything.

I suspect it is designed to route power for an emergency vehicle light bar.
All of the plugs that are not the 8 for the roof racks simply pop out to reveal a round or rectangular/oval hole. Some are directly into a rib. Some are simply into the interior. I have only popped one, but it took a 1/2" snap in through connector. You can see the insides of many of these items from the inside, presuming you have not insulated the roof yet.
On a 148" WB high roof there are 8 plugs that have tapped holes that are centered on the roof ribs.
There are 8 holes with plastic plugs without tapped holes. The front two oval holes are located above the roof rib that is about centered above the sliding door opening. The other 6 are directly into the interior. There are two about 7 1/2" behind the rib that is centered above the sliding door about 8" from van side. The hole on left side is round and appears to be the correct size for a 1/2" NPT electrical fitting. I will use that one to bring the solar wiring into the van. The second hole on passenger side 7 1/2" behind rib is oval. The remaining four are oval and are located between last roof rib and rear door frame.
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Rack towers, almost done. Ran out of welding wire on #7 . In the morning.


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Insomnia induced ...

A few observations about racks -- racks on a medium height, medium length wagon. And use my thoughts only as my observations not the gospel.

I can't tell much about the anchors. I will note that you will probably need to get an 8mm tap to clean the overspray out of the threads. I'm going to tighten stainless bolts to 10 ftlbs. Interestingly, I found stainless fender washers but not of sufficient bore to allow the 8mm. My son and I found out how difficult it can be to drill 8 stainless fender washers. :) Anyway, we're going to use the fender washers, split washers, and locktite.

I built all the feet/uprights/towers out of 1 1/2" square tubing with 1/8" walls (The same material as the frame.) on 3/8" 3"x5" plates. The footprints have a 5 deg. rake. So the feet have a 5 deg tilt to achieve square. The feet sit on a 1/4" poly plate and a heavy nylon cloth impregnated with pvc (known to me as material from a whitewater raft), on silicon directly on the metal.

A special note and note to self -- think things through. Thinking I was smart, I got my wife to assist in determining how tall the feet should be. (Since we live on a hill with a sloping drive we drove to the car wash with two ladders for flat ground. LOL) Anyway we measured and put up a wooden model in the middle. We didn't think about the fact that the rear of the van has more bow. Fortunately, I have enough clearance. In fact, I wanted stealth and the rack fairly close to the top of the van. However, to be truthful, it ended up being closer to the top (in the rear) than I would have dared.

Yes the frame is heavy and I think very sturdy.

I'm going to wet blanket the top and get some friends to help put up the frame on the feet and tack em up there. We'll then take it all down and I'll weld up the feet, finish one more section, make mounts for the corner lights, some sort of deck plan, fold down kayak towers, then paint it and be done. (excepting the ladder...)

A blurry photo of the deck (almost done).

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Great photos and reporting Airedrifter! One small thought, do you want to drill small weep holes at the bottoms of your vertical tubes/towers, for water to escape? Maybe you intend to silicon the rack vertical connector legs when you insert them into the ones sticking up from the roof, but a weep hole in each tube at the roof can't hurt IMO.

The shot from above of the 8 tubes sticking up from the roof (on their own) gets me thinking that you could create alternative racks/platforms/shades/awnings/etc. which could use the tubes as support/connection points (without having to use the single large and heavy rack you have fabricated, although I understand that it too could be the basis for all these add-ons). Nice job!
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So let me get this straight....all of your "feet" are bolted into prethreaded holes....correct? And those pre threaded holes are over the cross members? I was trying to figure out which holes are used. I already installed a ceiling and screwed ply strips onto the cross members in order to have something for the slat cedar ceiling to attach. I left the sides unfinished to access the holes I could see that don't go into the cross members. Those obviously aren't threaded.

I have the 148" mid roof and want to mount an awning. I luckily installed my fan (before thinking/taking notice of the various holes in the roof) in a location that won't interfere with a cross bar. I've looked at vantech's roof racks and I'm considering, but I can weld and have access to a welder so I may do what you've done.
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So let me get this straight....all of your "feet" are bolted into prethreaded holes....correct? And those pre threaded holes are over the cross members? I was trying to figure out which holes are used. I already installed a ceiling and screwed ply strips onto the cross members in order to have something for the slat cedar ceiling to attach. I left the sides unfinished to access the holes I could see that don't go into the cross members. Those obviously aren't threaded.

I have the 148" mid roof and want to mount an awning. I luckily installed my fan (before thinking/taking notice of the various holes in the roof) in a location that won't interfere with a cross bar. I've looked at vantech's roof racks and I'm considering, but I can weld and have access to a welder so I may do what you've done.
Yes, prethreaded holes are over the cross members. The holes for the feet are in a recessed spots along the roof. My photos should show you what that looks like.

I'm going to put an awning on my racks as three of the rails that go across the van will have a telescoping steel rod that will support the awning.

Good luck.
More photos! Especially of the awning thingamajigger part!
Here it sits for its "fitting."

I'll get the feet in place and take it down for finish and painting.

It's getting there.

Oh, that's one awning support coming out of the rear rail. There will be three. I'm working on fashioning a rake adjustment for the awning. One thing at a time.


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Lookin' good Airedrifter! You have already posted some MPG results on the other thread, so it will be interesting to see what difference your rack/awning/ladders/etc. make.

Will you be able to remove the awning set up, and still leave the basic roof rack on?

When you have time, it would be interesting to see how much the front of the rack sticks out forward of your last vertical towers, relative to the slipstream of air coming up the windshield.

Thanks for detailing this rack build so well.


http://www.fordtransitusaforum.com/...mpgs/6065-mpg-3-5-ecoboost-3-31-rear-end.html
Not to be outdone, Ima bolt some angle iron to the roof holes, put some Quick Rail fake gutters on it, and move my gutter clamp racks over from the Sprinter. Reason being, it looks like it's going to take me another month to get a Prime Design rack sorted. Sheeesh.
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I am sad to report that I am at a standstill in my construction.

It appears that I got in too big of a hurry and fell off my ladder. :( I have an off the scale shoulder separation that will be a problem for a couple of months. :( And my van sits with a partial rack on it that isn't attached or otherwise ready for the road... I guess my buds will rescue me this coming weekend. It suxs.
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Sorry to hear, get well . . .
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