Modifications of the Musso
The objectives
We wanted a
vehicle capable of long travels with 2 - 4 persons in reasonable comfort in any
accessible* terrain in
*Accessible
terrain is in
With the
Musso Sports 4x4 Pickup we had an
economical platform with the basic capabilities but more was needed:
Navigation and communication equipment
I wrote a comprehensive article in Icelandic covering our reflections on the
offroad modifications and made a lot of numerical analysis supporting those. I
tried to make the numeric model (Excel spreadsheet) as self explanatory as
possible. It is written using english for technical terms but comments are
currently in Icelandic only. I plan to
add English and German later. You find the spreadsheet
here. There may be alternative versions available on the download
page.
As open
terrain is ruled out we don’t need to deal with extreme rock crawling or mud
terrain. The main obstacles are thus the river crossings.
A snorkel
would be the optimum safety measure here, but unfortunately there are none
readily available in the market for this truck. I am aware of a website in
Other
safety measures are a thick aluminium skid pan replacing the original flimsy
sheet metal, strenghtened towing hooks at the front and a towing bar at the
rear.
We gave the
truck an OME suspension kit for 4cm lift and extended travel plus 2cm extra
lift (spacers) at the back to ensure ground clearance with heavy load.
The tires
are BF Goodrich AT 265 75/16 (31.7”) on the original rims. This is absolutely
the maximum you can squezze in without cutting metal. Any larger wheel options
mean a huge costs jump as bodywork and eventually a body lift will be needed.
We had
running boards fitted, as they are the most effective protection for the body
sides against gravel thrown up by the front wheels
Clearly we needed a hardtop and after some
studies we went for a combination of a hardtop with a folding roof tent (hard
case style). The bed of the Musso pick up is very short (which gives a generous
cabin in return) and we needed the longest possible base for the tent. The Musso pickup being a rare model, with few
vendors offering customised parts, left us with few options. The asian models
we discovered had all to be ruled out, because they were too streamlined
hatchback style with a short roof. This left us with a french model from a
company called Lachaup,
which had the right spec’s but unfortunately was not a good fit. Obviously
there was no incentive for the manufacturer to invest more in such a low
production volume. We got it through their German partner which sells them
under their own brand “Beltop”.
For the tent, we quickly narroved in
on the market leader Maggiolina. They have basically two hard case
designs, the inverted vee shape with a forward hinge (
We built a connecting frame between the hardtop
and tent instead of using a roof rack. This makes a cleaner, more compact,
stiffer and lighter connection and we don’t intend to remove the tent anyway.
The frame is built of plywood with reinforcements in the corners and on the
transverse sides and two extra aluminium cross bars, all glued together with
epoxy resin in typical boatbuilding fashion. While the bottom case of the tent
was a straight plate, the form of the hardtop was more complex and we used epoxy
filler to give the frame the exact form. The frame has soft rubber strips all
round on the top and bottom and six stainless steel bolts connect the tent and
hardtop through the longitudional sides of the frame.
The handling
of the roof tent is really easy and we are absolutely convinced of the concept.
Still the roof tent is practical only for
sleeping and we added another tent at the back of the vehicle, as a “living
room” when the weather is not so nice. This one is a “Drive Base” made by Vaude. It’s a lightweight dome type
with standing headroom and
made to attach to MPV’s, be it busses or 4x4
trucks. We built a custom connecting tunnel out of heavy duty canvas, which
wraps around the upper and lower hatches at the back and connects to the tent
and the car by velcro tapes. This replaces the flimsy universal connecting
flap, which is supposed to wrap around the vehicle and by doing so will
inevitably damage the paint. The tunnel also gives a windtight connection and
has a flap that closes the gap between the lower hatch and the ground, which
really helps when it’s windy and close to 0° Celcius. This tent is a bit more
of a job to handle than the roof tent, but we always park the truck into the
wind and start by hooking the tent onto it, so even a strong wind will not blow
it and you away.
We also
looked at other options, heavy canvas, some with patented quick folding
mechanisms. We found them all to be too bulky and heavy, but some of those will
surely handle heavyer storms than the DriveBase can. A concern with the DriveBase is the
vulnerability of the thin nylon, and we need to be very careful with open fire,
to avoid glowing bits of ash reaching the canvas.
The fitting out of the Truck bed, which had a
moulded plastic liner as standard, started with some aircraft style fastening
tracks. Two are on top of the attaching flange of the hardtop, bolted through
to reinforce the attachment. Another two are glued with Sikaflex to the bottom
liner. A
removable bulkhead is fastened to these four
tracks and can actually be moved back and forth as required. This splits the
bed into two parts. The front one takes jerrycans for fuel reserves and other
large items, while the after partition takes three stacks of euro size (40 x 60
cm.) modules. Two stacks are made of two boxes each and one has the fridge and
the toolbox. Everything for cooking or a quick repair can easily be reached and
we don’t have small items flying around and getting lost under the big stuff.
Lots of strapping points are available to secure things and the next project
will be a holding frame under the hardtop roof for the lightweight dining
table, to stop it blocking access to other items, when stowed on top of the
heap.
We opted
for gasoline as fuel and bought the classic and robust Coleman twin burner
stove and latern. While the stove served us well, the latern cocked up right
away and we could not get spares in Iceland. Possibly it is more vulnerable to
standard uncleaned fuel than the stove, or we simply got a bad example. Water is kept in a 10 l. bottle as it is
readily available everywhere in Iceland in good quality.
Navigation and communication equipment
We have a
Garmin pocket size GPS-plotter with topographic maps of Iceland. There is also
a PC connection but we have not used that much and have not invested in a mount
for our laptop. Communication is via mobile phone where possible but for safety
we also carry a FM handheld fitted with the private frequencies of the local
4x4 clubs, which have built relay stations covering large parts of the
highland. We intend to fit a fixed rooftop antenna, to enhance reception in the
truck. Finally we have a “wardriving” antenna which could help us to pick up
Internet connections at WLAN HotSpots.
You can also
watch the pictures of the Musso 4x4 truck in the galery.