Ford Transit USA Forum banner
1 - 16 of 16 Posts

· Registered
Joined
·
309 Posts
Discussion Starter · #1 · (Edited)
PJ's Camper Van: DIY Window

I often take 3 or more people along on my adventures, so a comfortable, safe back seat seemed like something that would be nice to have. I sourced and installed a sweet black leather Toyota Sienna 2nd row, complete with seat belts. Problem solved, right? Wrong. My climbing buddies didn't mind the lack of windows, but my wife and adult kids refused to ride in the back without a window. As many of you know, at this time, there aren't any Transit specific aftermarket windows available. I considered installing one of the expensive and ill fitting RV windows I've seen around. I also considered buying the OEM glass and trying to install it. But neither of these options would provide a window that could open all the way. After a lot of scheming, and after suffering a fair amount of heckling from friends and family, I built and installed a custom window.

The "glass" is 1/8" abrasion resistant polycarbonate. I made a paper template and my neighborhood Tap Plastics cut it for me from the template. Just in case things go wrong, the window and the cutout are slightly undersized. The top of the window is held by a full length, stainless steel piano hinge mounted into the hollow door with nutserts. The bottom is held with latches mounted onto custom fabricated aluminum angles that are, in turn, mounted to the door with more nutserts. The rim of the cutout is edged with bulb seal. According to the bulb seal manufacture, the ideal is to compress the bulb seal 50%. I was able to do that at the hinge and I was hoping I could get 50% around most of the rest of the rim by adjusting the latch tension. Finally, to make it look a little more factory, I masked and painted a black border on the inside of the polycarbonate.

First the good news: The window looks pretty nice from inside and not so bad from outside (particularly from a distance). It doesn't vibrate/flap at high speeds and it doesn't leak - at least not when the van is sitting still - I tested it with some pretty good blasts from my garden hose.

Now the bad news: The latches don't pull the glass onto the curve of the door in the way I'd hoped. Actually, they do (enough to prevent leaks), but they also cause the front and bottom edge to pop out in an somewhat unsightly way. I have some magnets I could glue on to fix this. Using auto paint for the border was a bad idea. It turns out that there are special paints for polycarbonate. Finally, I'm getting small cracks in the polycarbonate where the hinge and latch hardware was mounted - I guess you can't put this exact type of stress onto 1/8" polycarbonate. I'm thinking I'll try 1/4" polycarbonate and going a little easier with the mounting hardware (don't try to tap threads, use rubber washers, etc.).
 

Attachments

· Registered
Joined
·
19 Posts
Love the window and your braveness. A company i used to work for used some good polycarbonate (Lexan) for stuff that took a beating. The only time it started to crack was when it got in contact with oils. It breaks down and gets brittle. Not sure if this is your issue or not.
 

· Registered
Joined
·
309 Posts
Discussion Starter · #3 ·
Love the window and your braveness. A company i used to work for used some good polycarbonate (Lexan) for stuff that took a beating. The only time it started to crack was when it got in contact with oils. It breaks down and gets brittle. Not sure if this is your issue or not.
Thanks @Ottoj. I don't think there was any oil, but I painted all the hardware with auto primer and paint, so that could be the source of a chemical reaction. I drilled the holes slightly undersized and self threaded all the SS bolts through the holes. I thought this would make it stronger and avoid water leaks, but now that I see the results, I'm wondering if this just introduced additional stress. It probably didn't help that I ran the acorn nuts directly onto the polycarbonate. I used thread lock so I wouldn't have to tighten them down a lot, but again, now that I see the results, I'm thinking a rubber washer or something similar would be worthwhile. Now I have to decide is if I should use 3/16" or 1/4" for version 2. 1/4" seems so stiff that I'm worried that it won't bend enough to fit the curve.
 

· Registered
Joined
·
5,748 Posts

· Registered
Joined
·
931 Posts
Looks good! Any detail on how you mounted the seats? I know a lot of people are reluctant to use the second row Siennas because of the lack of an integrated seat belt.
 

· Registered
Joined
·
2,894 Posts
Pretty interesting effort. I'll keep an eye out for the update.

You seem like a candidate for having a single build thread, where you accumulate all of your mods... easier for you, and good for readers that want to keep an eye on the entire project. You'll see that most of us have build threads for our own projects. You might consider making your pop-top into a master thread. If so, it may be possible to edit the title -- I'm not sure.
 

· Registered
Joined
·
309 Posts
Discussion Starter · #7 · (Edited)
Looks good! Any detail on how you mounted the seats? I know a lot of people are reluctant to use the second row Siennas because of the lack of an integrated seat belt.
I bought 4 point racing seatbelts. I discovered that I could get away with using 3 mounting points - 2 on the sides and 1 behind the seat. For each seatbelt, I used 2 of the biggest bed bolts I could find and one of the original seatbelt mounting points for the 3 mounts. My 2 bed bolt mounting points probably wouldn't pass the 4000 pound NHTSA requirement, but I'm confident they are much, much stronger than what was in the rear seats of my Tioga RV. I mounted the row to the floor of the van with 2" structural aluminum angle and more bed bolts and bolts to attach the seats to the aluminum angle. The seat attachments are probably good for 4,000 pounds.
 

· Banned
Joined
·
214 Posts
I've played around with Lexan, and the 1/8" really isn't as wonderful as we're led to believe. You'll have no problem with the 1/4" except it's not as flexible, and may bend the sheetmetal before it bends around it for the contour.
 

· Registered
Joined
·
309 Posts
Discussion Starter · #10 ·
Maybe you could heat the 1/4" plexiglass with a heat gun and pre-form it to fit the curve of the door. You'd probably have to make a jig to assist with the bending.

???
The metal I cut out could be used as a jig. I was thinking that trying to heat either polycarbonate or acrylic over a jig would cause optical distortion. It is not a lot of bend, though. Maybe I'll try heating my current polycarbonate and see what happens to it since it eventually will be replaced.
 

· Registered
Joined
·
931 Posts
I would like to know more too and see some pics of the seat belt setup. I am not a self installed seat hater - I have some in my own van. Just curious to see what you did - it's a very creative solution.

Jburde the seats are readily available on Ebay and are not that much $ - maybe 3-400. Shipping is the killer. I have a pair of brown mid rows but no center seat if you are interested. I bought them for my van but installed other seats instead.
 

· Registered
Joined
·
309 Posts
Discussion Starter · #13 ·
I'm interested in more info on the 2nd row seats. Where did you get them? How much (if you don't mind)? Close up pics of the mounting system?

Thanks much
I bought them off Craigslist. I paid $250. This probably represents close to the lower bound on pricing. The van is out getting leather put on the front seats for a few days, so this picture is the best I can do until then. You can see the aluminum angles, the bolts the seats attach to on the angles and the bolts used for seat belt attachment points if you look closely.
 

Attachments

· Registered
Joined
·
309 Posts
Discussion Starter · #15 ·
Maybe just double the 1/8" to make a 1/4" strip at the location of the holes, using the correct adhesive.
Or maybe I could do something similar with 1" x 1/8" architectural aluminum bar. I've had good luck self taping screws into 1/8" aluminum and cutting the bolts off flush in the interior. Painted black, that bar might not look bad.
 

· Registered
Joined
·
309 Posts
Discussion Starter · #16 ·
1 - 16 of 16 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top