Date: Mon, 28 Apr 1997 13:12:13 -0400
Sender: Vanagon Mailing List <vanagon@vanagon.com>
From: "Richard Alexander Palmer" <rapalmer@eos.ncsu.edu>
Subject: Pop-top transplant report/procedural
Howdy all. This is for everyone who owns a bus, and has at some time wished
for the extra sleeping space of the luxurious double bed pop-top, available on
Westfalias starting in 1974. I myself have long craved such a top, but never
desired the mechanical complexities of those later campers. So, the only course
for me, and everyone else out there with no pop-top is surgery. Having done the
operation last weekend, I am pleased to announce that the necessary transplant
is not painful, and the results are definately worth it.
Now this is not to take the process lightly, as it is a VERY involved task.
You'll need to chop the rear 2/3 of your roof off (although I hear vanagons may
not need this, due to their flat rooves), and then do some serious welding.
But, given a weekend, and the necessary equipment, you'll find it definately
will not be a super-difficult task, and certainly rewarding.
As background, I have a '67 camper, which is IMNSHO almost the parfect camper
arrangement. The only thing it was lacking was the upstairs bed. So, after much
ponderance, I decided that the transplant was in order. When a fellow listee
mentioned a willing donor for the top, a '75 Westy, I knew that the time was
right. I cut off the entire roof of the bus, just to have everything as a
pattern, and brought it home, which was an adventure in itself. Anyway, I then
took the entire assembly apart, just to see how it fit together, and to measure
and inspect the metal framework as factory fabricated for the top.
The next step was to take EVERYTHING out of the rear of my bus. I do mean
everything, because it's going to get really messy back there, and any seats or
carpets will be ruined by sparks and welding scraps and such.
After a careful comparison of the two rooves, we confirmed that the
split-window roof definately has a higher degree of curvature than the late
model, but it doesn't make the project un-doable.
Of course, as with any modification, measure twice, cut once. Actually,
measure about 5 or six times. Once that roof is cut, it's gone. We used the
sides of the bus frame as reference marks, and measured in towards the center.
We cut from the front roof brace, behind the front doors, to the rear brace,
just inside the rear hatch, and cut at a horizontal distance of 5 inches in
from the sides of the bus. Now, this removed one of the major frame members, so
that has to be replaced. You'll also need to run two rails the length of the
bus inside the hole to firm up the edges, and rest the bed on.
Having seen fellow listee Stefan's just completed transplant, I had a good
idea of how to do this, although his is a late model, so dimensions are
different. We ran a piece of 1" square 14g steel tubing between the front and
rear roof braces on each side of the bus. We then welded a piece of 2" square
14g steel tubing across these, in place of the cross brace we had to remove. We
also welded an additional 1" brace across the rear to support the rear of the
bed.
Once the frame was in, we bent/beat the roof sheet metal as flat as possible
across the rails, and tack welded it down. At this point, paint is a good idea,
to prevent nasty rust.
After that, it was time to mount the top. Now, before mounting the top, it's
a good idea to fit the bed in, and drill all the holes necessary to mount it.
Once it's all in, TAKE IT BACK OUT. Yep, that's right. It'll only be in the way
now, but you want to get all the holes drilled before you put the top on, since
it's a lot easier that way.
Now, set the top on the bus. Line it up all the way around, then carefully
pop it up, and have someone mark the mounting holes for the hinges. Remove the
top, and drill ONE hole for each hinge. Put the top back on, and bolt that one
spot down. Now make sure the other holes line up, and everything is cool. If it
doesn't line up, you've only made one hole, instead of 3.
After getting the hinges bolted down, it's time to mount the front brace. This
one requires a lot of patience, as you have to make sure everything lines up
with the top both up AND down. Check those holes very carefully, as it has to
be perfect for the top to work right.
Next mount the hold-down latch bracket for the front. Just make sure it lines
up well, and mount it- that's pretty straight forward.
After that, you're home free if you have a late model. Just fasten the canvas
down, and attach the fiberglass luggage rack to the roof, and away you go.
If you have a split, you still have a bit more to go. The front of a late
model is WAY different from the front of a split, so you can't use the
fiberglass luggage rack, or at least all of it. So, you have to get creative in
finding a way to stop water from blowing up under the top. I cut the rear part
off the luggage rack and used it as a base. I'm getting some aluminum flashing
to round out the air dam to smooth it out a bit. Basically you want to keep
things dry, and smooth out the lines for airflow as much as possible.
Another important note for splitties is that the hinges for the bed might not
fit. Mine didn't, so we welded corner brackets to keep the front bed section
from sliding off.
Anyway, all told, this makes for a good weekend project for 2 or 3 people,
assuming you can weld, and aren't afraid to cut a hole in your roof.
You need:
donor roof section with ALL the hardware
reciprocating saw
welder (we used a MIG set-up)
grinder
various screwdrivers and ratchets
patience
It can make all the difference between sleeping 3 people uncomfortable, and 4
people in the lap of luxury. Go for it!
If anyone has any questions, feel free to ask, while it's all fresh in my mind.
Happy camping!
--
____________________________ Poor Richard is rapalmer@unity.ncsu.edu
`/""""/""""/|""|'|""||""| '\ http://www4.ncsu.edu/eos/users/r/rapalmer/www/
/____/____/ |__| |__||__| | '68 VW Crew Cab
| \ /V\ /====================| '67 VW Camper-Nellie, the Wild Goose
|()\ \W/ /()| _ _ |"I spend half my life explaining to Christians
| \ / | / \ / \ | _-( ) why I'm a Deadhead, and the other
=C========C==_| ) |--------| ) |=] _-{_}_) half explaining to Deadheads why
\_\_/__.. \_\_/_ \_\_/ \_\_/__.__. I'm a Christian."
|