UMAX Ultimate RV Conversions

U M A X - ULTIMATE RV  Conversions

NEW! VIDEOS (Keep checking back as we add more)

NEW! Cabin access photo

Updated August 2018 - New "Spice-Sink Tidy

Electrical System | Fuel | Climate | Water & Bathroom |  Features | Parts List | Recovery | Entertainment |
Cooking | Storage | Sleeping | 4 X 4 Features | Preventative Maintenance | Parts List |

UMAX Ultimate RV Project

UMAX Ultimate RV Project

UMAX Ultimate RV Project

UMAX Ultimate RV Project

UMAX Ultimate RV Project

UMAX Ultimate RV Project

UMAX Ultimate RV Project

We don't stop making small improvements!
One switch turns on the Mirror mounted GPS and Accident cam. (DONE)
Add tyre pressure monitoring, DONE see video #4 on this page.

(Top / Above) Testing some extra table configurations..
We like this one because the mount is not on the floor where you'd be tripping on it.
You can remove the table easily when not in use, it could stay were it is even when the bed is deployed if you wanted. Boat quality stainless steel mount/poll.

Also added 2 fruit cages.

Raymond Island
Raymond Island

The Vision

Do you envy people with a 4x4 that could go places you couldn't go? 

Some tow a small 4WD behind their RV for this very reason, seems a bit of a waste. 

You'd see people take their cruiser onto the beach for a day then have to return to their van or 2WD motor-home. 

What if you could stay as long as you like in luxury? We've done it, read on..

Q. What is the cost of a good 4WD and off road caravan? Now add you all we've added to this RV.

You simply won't find features like a separate 5KW alternator or toilet that stores away to double the room use/size.

i.e. 5KW engine driven 48V alternator means you don't need to book a van park simply because the weather is overcast and solar is almost useless. In 20 min you can heat the HWS water for both showers, boil the jug and make the toast using under 1L of fuel.

A rare combination of Luxury & Serious 4x4 Capabilities.

Attention to detail too, we fixed one thing that really annoyed us, the pip squeak horn.

See Parts List Page for information on the new 300Hz Air Horn.

This page is more like a blog so we remember all the work done & write a manual.? 

Colour Coded Siding Protection

UMAX ultimate RV

Ignore signs like this!

Seep my ass

This is a private project by a company director and will be sold privately.

Electrical System | Fuel | Climate | Water & Bathroom |  Features | Parts List | Recovery | Entertainment |
Cooking | Storage | Sleeping | 4 X 4 Features | Preventative Maintenance | Parts List |


Electrical System

Has its own Page.



Centre is main inverter, you can see the 12V house battery (48V bank is to the left out of view).

Lighting Options

Lights up

Fridge front panel changed from Black to White.

Cinema Mode dimmable lighting

Dimmer can adjust Cinema lighting - 100% Shown below is around 20%


Water & Bathroom & Toilet

Two rooms in one

A full sized marine toilet slides completely out of the shower area, the toilet resides under the kitchen sink when not in use. This is why the storage area under the sink is a sealed compartment as per marine use. Toilet slides on a drop down plastic running plank, once stored (pushed back) and locked the toilet can't move from its storage area. Even after a shower the running board is dry and you can step directly onto it.

There is a concealed switch to turn on toilet pump that's accessible once the toilet as been engaged.

Sliding Toilet effectively doubles the bathroom space.

Shower & Toilet

Note slider retaining lock above toilet. The slider bed was custom made from very strong plastic (same as cutting boards use).

Fresh Water Tanks

There are two fresh water tanks, 100L & 65L, valve selectable (near pump) or choose both (main and reserve, both fill via single keyed inlet cap).

Tanks have a cross feed valve (underneath near rear tank) that can be turned off in the case of trying to extract the very last of the water or one tank has been damaged. 

3 tanks

Custom made sink/bench/spice tidy.

Interchangeable (various sizes) item holders that have a variety of uses.
The area behind sink was not going to get must use, the holder makes effective use of the space.

Sink Tidy

Waste Water and Recycling

Two waste water tanks, 55L Grey plus 55L black water = 110L Total.

Gray water can be pumped to flush the black water tank (separate pump and filter). Suggest doing this after emptying, re-flush then leave some gray water in the black water tank to slosh around thus cleaning it. As gray water is used to flush toilet, this means stored used water G+B is round 100L.

The AC can produce water (dehumidify mode is best) which may be handy if you're in the middle of nowhere running out of drinking water, assuming you filter it.

Access AC hose & tap above driver side rear mudguard. You should leave the tap open when driving or in the case the system is holding too much water and shows that error. You close the tap if you're going to use the AC feature that pumps water internally to increase the cooling capacity.

Dual Speed Exhaust Fan

Bathroom Fan 2 Speed

On high the fan draws 35W, Low 10W either way it moves a lot of air out of the bathroom / toilet.

The fan is powered via the 240V system via a transformer so there is no voltage drop.

High can also be used for "privacy" noise :)


Water temperature and black water level Shower cold water mixing (left) and Black water level..

By setting the storage HWS to the desired temperature you may avoid adjusting the max temperature valve once you have it how you like it.

For maximum shower time you'd adjust the HWS to max temp then adjust the mixer above.

Keeping it all Clean

It's fine to have a shower with the bathroom as you see it in the image below, however for the sake of 10 seconds work to hang a protective shower curtain (supplied) you save a lot of cleaning and the area always looks its best.

Shower HWS 



  • Waterproof toilet roll holder under sink.
  • Gray water used to flush Full Sized marine toilet.
  • Spare main water pump supplied (and hose etc.) as this is the most lightly component in the water supply system to fail.
  • Outside shower, just in case you want to wash off some sand etc.
    -- Also handy for say coffee plunger so you don't put the ground coffee beans down the sink (Sink and shower water is used to flush toilet)

    Outside Shower RV
    Outside Shower next to cabin door  Shower is near entry steps.


 89665_tmc_electric_luxury_marine_toilet_24v_open   Handy Hints on the use of Marine Toilet

Use flush pump in say 5-10 sec bursts (with say 5 sec between) when appropriate lay paper down first.

-- You can turn off the water supply (tap in-line near bowl) if bowl is filling up too far because there is a blockage.

Water flush on-off valve

-- Use this tap to adjust maximum flush water volume as well as cutting off the flush water supply. 
You don't normally get to this this view it's with the Main Panel removed.

Powerful Pump out System


RV Dump Point

Black water (Toilet) tank emptied via electric pump. 

Just put the hose into the dump point and turn on pump switch while holding hose.
-- Never use the pump without holding or some how securing the hose so that it does not do what you've seen garden hoses do, there is a lot of pressure!
-- The whole tank can be emptied in about a minute. 
-- You can then pump some gray water into the tank and repeat to rinse if required. (Much slower pump).
Tip: If the port pump seems not be working, check that you have water in the gray tank and try flushing the toilet, they use the same filtered feed point and there may be an air lock.
There is a gray water filter in the upper left hand corner that could need cleaning too, especially if you emptied tea leaves down the sink.
Worth nothing that whatever you put down the sink is used to flush the toilet so keep it to dish washing (try cleaning off most of the muck with a paper towel, saves water too).

HWS and Black Water pump White tank is storage HWS. Black water pump is above to the left.

-- Suggest pump some Gray water into tank then empty that out to flush the black water tank.
    (There is a separate "port" switch and pump for this function)
-- Gray water can be part emptied emptied by porting to black water tank (as above), or high flow dump valve below main fuel tank.
-- Bulk drain tap for grey water is fitted in case you have more than you can use in the toilet.

Storage HWS (Shown in above image)

  • 10L Storage heater HWS (1KW) 240V or 12V @ 25A. This can run at max temp if using 240V we recommend setting temp to shower temp so no adjustment of the cold mixing is necessary, there is a valve for this and it should be "set and forget".

You can also run the HWS in 12V mode (70 deg is the auto max) by turning on the 12V breaker located near the heater.
HWS uses say 1,000W for 10min (240V) of every hour to stay full hot. This adds up so it's better to turn on say 1HR before you need it, then off when done. Even off, some hot water will last for hours for dishes. Suggest on while driving so water is hot when you get there and overnight.

12V heating has about 1/3 of the wattage so it takes at least 3 times as long to heat up. Because the 12V house system has plenty of solar (260W), if you're going to see some direct sun that day you could choose to use 12V alone and let the solar recharge the 12V house battery.

The 48V batteries (using 240V to heat) can heat up the storage HWS water next morning with or without the engine (thus 48V alternator) running, this will take around 1/2 hour so you can set a timer if want the water hot as soon as you wake up.

Tip: Better for battery life to start the engine and run in idle up mode for a few min in the morning before/as you power heavy 240V loads, including the HWS. 240V seems to be best option for the HWS unless the conditions are clear sky.

A lot depends on your way of doing things, there is no right or wrong, it's all about balancing loads.
  • Idle-up charging uses <3L/hr so it's not expensive to save 48V battery bank for the coffee maker or microwave or HWS.


Getting it just right.

An easy and economical way is to adjust the HWS temp to your acceptable shower temp then you don't have to adjust anything else.

For 240V operation, there is a switch behind the microwave so you don't need to go outside, you can put the timer on there also. 

Washing Machine

Washing Machine

Washing Machine resides beside the shower.
Tip: Run the normally wasted water while the shower hoses heat up into the washer.

Empty washing machine hose via shower drain, if this position is ideal for you then easily fit a drain direct into the Gray water tank. 

Cold Normal or Filtered Water via Switch

Pump switch

10L HWS - 240V or 12V Storage Heater

Normal or Filtered water via sink tap is (electric) switch selectable (no need for 2 taps)
-- Red indicator to remind you that pump should be off while traveling in case a pipe or fitting fails.

Sink area

Above shown with black Splash Back in down position.

Main panel (below sink) can be easily removed for maintenance items.

  • Toilet slides into shower area when required.
  • 1.95m H x 800mm D x 900mm W (Aprox.)
  • Suction fitting tea towel holder can be moved as required.

See also Climate System for emergency water source. 



Climate System

The Truck cab has its own very effective cooling and heating systems.

The cab AC has the condenser mounted above the cab roof so it doesn't increase heat load on the engine and works more efficiently.

Because there is airflow between the cab and the body it's possible to use the cab's systems to heat or cool the RV while the engine is running. Normally however you'd use the systems as outlined below.

The living area is cooled by a 21,000 BTU Air Conditioner (6.05KW) and adjustable cooling fan in front of rear window.
Pictures may show the "Bio" model this has been replaced with a similar model that's a better fit, up from 16,000 BTU to 21,000 the control panel is mounted on the front.

Air flows via the rear window (sliding with fly screen) to the roof vent and/or cabin door when open (fly-wire with magnetic close in place).

You can via a special installed hook also have the main cabin door held partly opened with a safety chain for security.

Tip: It's best to park with the rear (or front if fitting the shades) of the RV facing full sun.
(Side on if using Awning is OK too)
-- Less surface area that can heat up the cabin, side on to full sun (unless using Awning) is a big heating load to try and dissipate.
-- Leave AC on in fan mode while driving in very hot conditions.
-- If parking side on to sun deploy the awning and park that side into sun.
-- AC filters can be cleaned (in place or removed for washing) without removing unit.
-- AC uses the water it produces (you can add more in very hot conditions via hose in under sink storage unit, use funnel NOT direct pressure from tap) to cool the condenser coil for more cooling efficiency.  Adding water is not necessary for the AC to work but will tend to stop it overheating in very hot conditions, water vapor & heat is exhausted outside. 

The AC will stop if the water it collects is more than it can use in the above process, open the outside drain hose.

Rear view 4x4 RV Air flow via rear sliding window / fan / top vent and/or main door.

Heating is via the diesel heater, we tested reverse cycle AC but this is far easier on the batteries and generally a far better way to heat.

Diesel Heater

  • 4KW diesel heater with 7 day timer (not standard, extra), can be used as ventilation fan.
    (Down arrow all the way then press it again)
    -- This unit can also display diagnostic codes (Press Heat button while heat it on), Press < and > at same time to clear codes.
  • -- Using a fraction of L/HR very economical and extremely effective heating.
  • AC modified to provide emergency water supply via tap outlet above rear drivers side wheel. (up to 30L / Day using Dehumidifier mode).

Caframo Sirocco Fan, force air from rear window, fan has inbuilt timer also.

Fan forced

Electrical System | Fuel | Climate | Water & Bathroom |  Features | Parts List | Recovery | Entertainment |
Cooking | Storage | Sleeping | 4 X 4 Features | Preventative Maintenance | Parts List |



Recovery Systems

  • 17500 lb - 7938KG (24v) Winch - Rear Mounted, so you can pull yourself out of further trouble! Handy for rescuing "Baby" 4WDs too :)

    If there isn't another vehicle in convoy ahead of you (never go first!) that could winch/snatch you out then a rear mounted winch can be very handy.
    You may have misjudged or not seen the depth of a hole (/river crossing) and got stuck such that you can't go forward.
    There are many situations where pulling backwards would get you out of trouble rather than into more.
    Especially true if travelling alone. You can still winch forward, that's covered below..

    Fitting Winch Fitting he new Winch with custom mounting cradle..

  • -- After use suggest allow some time for 48V system to automatically re-balance before charging at high currents.
  • -- Using 3 pulleys you can winch forwards too if you have 3 trees or mount points (can be another RV).
  • Permanently mounted 4 X Treads and shovel (the easy way to get out of sand).

    Treads We got bogged on purpose just to try them and they work a treat!

  • Front winch point.
  • 2 X Spare wheels.
  • Remote controlled Search Light.
  • Rotating Beacon.
  • 2 X Reversing Flood Lights, next to reversing lights.
    They only come on in reverse provided you've switched on the master (high power lights, also enables driving lights..) switch on dash.

    -- NOTE Wheels on the right have RIGHT hand threads, on the left have LEFT hand (loosen the opposite way to normal)

  • Portable 240V air compressor that can actually get to the pressure you need (say 70 PSI front 80 PSI rear on the road, 30 PSI sand)
  • Various ropes, pulleys, snatch strap etc.

Q. What do I do if I really need to winch forward? A. Video

Not that we've done a river crossing in this RV but front mounted winches seem to get a soaking / beating.
If you wanted a more permanent solution (apart from fitting another winch) you could fit guide-rollers under the RV on the chassie
and run the winch cable underneath from back to front. You'd spool out the cable beforehand. The general idea is here.
Basically a bracket with a roller on it moves the cable down and away from the winch then you reverse cable direction and feed it under the RV.
When we get around to it just for the heck of it we'll make up a bracket (like this) to do the job.

Testing December 2017..

Winch out 2 test


Fuel System - Diesel

  • 220L total over 2 tanks

100L main tank is supplemented by a 120L** tank on the passenger side of vehicle = 220L Total. 

Range is approximately 1,100km / 1,400km depending on your driving. (80km/h speed is much closer to 1,500km range from our testing).

Tip: Best speed for highway cruising is 80-90 KMH = 15.5L / 100 km (Aprox or overall 14-16 MPG)  - 100-110 KMH is no problem, naturally uses more fuel.
Above assumes you're not being a led foot, if you pushed the RV hard (just like a car) then you could find consumption increases into the 20L range.

  • Idle (using idle-up for charging) uses 4L/HR. Idle-up (825 RPM) is recommended for heavy power loads like full power microwave or water heating simply to save the batteries. So it makes sense to heat (shower) water while driving even if you're not going to be using it for a while as the HWS will stay hot for some time, heating to maximum will take less time.
  • Idle-up consumes <3L/hr.


Fuel Pump & Gage Selection Switches

  • The 100L (main) tank can be topped up on the fly from the reserve tank.

The electric pump (switch in up position) will move about 100L in 15 min. The Aux pump has a key safety interlock so you can remove this key so nobody can cross pump fuel (say you have children staying).

It would be possible to overflow the main tank (just as you could at a petrol station) which is the reason it's key protected.

Unless parked were you can re-check the gauge by turning off / on the ignition while fulling it's safer to fill 1/4 of a tank at a time allowing 4 min, this excludes the last 1/4 to full as the amount of fuel from the last marker to overflowing is only a few liters.

Fuel Cross Feeding

While the pump is operating there is a large RED light on the dashboard.

If using the petrol gauge to estimate how much fuel you've cross filled (switch in bottom position) note there is a lag (unless you turn ign off then on) so we suggest you don't fill to more than 3/4 without either turning ign off/on or allowing 10 min for the gauge to average its reading. The same switch that turns on the cross feed pump (BIG RED LIGHT ON DASH) also allows the main fuel gauge to read the reserve tank and turns on amber warning light. 

If the switch is in the show tank 2 on gauge position a yellow indicator will be on to remind you that your not looking at the tank that's running the engine, thus if left in that position you could run out of fuel and stall the engine.

To completely re-fill the main tank from the one on the passenger side  takes around 15 min. The 2nd tank is 20L larger than the main tank so this way you know you'll always have at least 20L for emergency use. If you run the 2nd tank dry you'll need to re-prime the pump via (squeezing once or twice) the in-line hand primer located above the tank, while running the pump.

Note: There is a fuel cut off valve before the pump, it opens when the pump is on. This stops any possibility of fuel syphoning from tank 2 to 1. 

When the fuel gauge is reading the reserve tank it's 1/4 of a tank pessimistic so you have a fuel margin.

Note the 2nd tank supplies the diesel heater and this should be taken into account in your calculations.
** This tank was purchased used (in perfect condition) as that's the only way we could source one. 



Kitchen - Cooking

Sound and Vision

PLUS + Full sized food preperation bench (same size as above without the sink etc.) on other side of cabin (behind you if looking at above)..


 smeg-30-litre-convection-microwave-oven  Engel_95L_Compressor_Refrigerator Dometic Sink

  • Smeg 30L Convection Microwave 
  • Engel 95L Compressor Refrigerator
  • Dometic Sink

      Compressor fridges work in very hot conditions unlike some others. (Aux thermo cooling fan fitted behind fridge area.)
    -- 240V or 12V operation. Force 12V by turning off mains, plug behind toilet storage area (so move toilet into operation position to get to it).
    You may choose to run on 12V to balance power use loads between the 12V and 240V systems, depending on your usage requirements.

  • Electric induction hotplate mounted on top of the microwave. The range hood below is mounted above it.
    If you haven't seen one working, they are amazing.
  • Ideal for boiling the kettle in the morning. Use the lowest power setting so you can boil it in about the same time it takes to heat up the HWS for your shower. 
    -- Strongly suggest running the engine in "Idle-up" mode so you greatly increase the 48V battery bank life. This will use less than 2L of fuel in the 20-30 min required.

    Induction Hot Plate

  • Pull down black splashback for when the above is being used.


  • Dometic Rangehood.  (Standard lamps replaced with LED).
    Dometic Rangehood RV
  • Kitchen drawers / Overhead Storage / Push to open draws and cupboards (excludes overhead they open upwards).
    -- 4 drawers can also be locked/key locked (from inside left hand cupboard beside them).
    -- They along with the 2 copboards on either side have magnetic locks that engage with the lights (including parking).
  • Soft close duel garbage containers (one or both can be used for storage).
  • Soft close Pan Rack.
  • Wine Glass Holders

 Slide out BBQ

External slide out BBQ

Note clip-on Splashback plate

Slide out BBQ - Gas bottle (Spare supplied) can be stored and used from above the spare wheel.



Other Features - Electric Awning with inbuilt LED lights

-- Note you can open the awning slightly then turn on light to illuminate the side, ideal for cooking at night etc.
  • Ranger Roof Hatch with LED lights & Switch so you can use just the Range Hood lights if you like.
  • 2 x Side skylights either side of Main Roof Hatch.
  • Full sized windows (4 x 800mm x 1.4m, Rear 600mm x 1.8m, Bathroom 700mm x 1.2m, Door 540mm x 750mm).

    Full Sized Windows

    Full Sized Windows

  • Rear Glass - Upgraded to incorporate a sliding window 1400 x 320mm.
    -- Lockable with fly screen for better ventilation flow through, can be fan forced.

  • Entry to Cab from Cabin (Great for starting engine, use in emergency to gain access) also handy to start the engine to run the generator, you can do this by stretching to reach the key without actually moving into the cab..
  • Aluminium blinds.
  • LED lights to number plate.
  • Auto Electric Steps into RV.
  • CB Radio.
  • CD / MP3 player in cab.
  • GPS in cab in place of rear view mirror.
  • Registered to seat 5 (Currently only 3 seat belts installed in cab, would require installing 2 to rear seat inside RV).
  • TV antenna (high gain with adjustable amplifier next to TV).
  • Yamaha Soundbar (Top of range very good sound) - Review
    Drivers: 2 x 19mm dome tweeters, 2 x 55mm midrange, 2 x 75mm woofers Quoted soundbar power: 30W x 2, 60W Subwoofer: 200W (no specs) Inputs/outputs: 1 x optical digital, 1 x coaxial digital, 1 x analogue (RCA phono pair), Ethernet, USB (service only), Bluetooth, AirPlay, MusicCast MusicCast file type support: MP3, WMA, AAC, FLAC, WAV, ALAC, AIFF Streaming services: Spotify Connect, Pandora, internet radio, others via AirPlay/Bluetooth Dimensions (bench): 950mm x 72mm x 131mm Dimensions (wallmount): 950 x 131 x 80mm Weight : 4.9kg.
  • Spotlight (Marine, remote controlled at front).

    Spotlight, Solar, TV, Vents

  • Emergency light (Yellow, flashing at rear of RV powered on with spotlight can be overridden to always off).
  • Driving lights (2 X high powered LED).
    NOTE: You need to switch on the master (high power) light switch (on dash in a group of 3 including camera/rotating beacon) if you want them on when you select normal high beam. 
  • Reversing flood lights 2 X operate only in reverse and only if you turn on the master (high power) light switch as noted above.

    LED Driving lights

  • Laptop Table (removable, magnetic & latch secured).
  • Magnetic locks on cupboards & draws (all that would open can be magnetically locked by simply turning on running running lights or main lights (i.e. you are driving).
  • Colour coded aluminium side protection to match powder coated wheels.

    Colour Coded Siding Protection
    Colour Coded Powder Coated

    Tire Pressure Suggestions

    • Highway @ 6500 Kgs. Front 70-75 PSI / Rear – 75-80 PSI • Dirt Roads @ 6500 Kgs. Front 60-65 PSI / Rear – 65-70 PSI • Off Road / Mud @ 6500 Kgs. Front 55-60 PSI / Rear – 60-65 PSI • Beach Sand @ 6500 Kgs. Front 50-40 PSI / Rear – 55-45 PSI* * Lower pressures may be needed in very soft sand. 20-25 PSI but speed must be kept very low and tyres re-inflated when conditions clear. A 285/70R19.5

    Source / background on tire / wheels

Weight Example (Plaque inside drivers door fitted by ATW)

You may find that fully loaded weights (KG/Front-Rear) pan out similar to below:
(Please do your own research/checks)

All up around 6060KG of 6500KG max. Inculdes full water, fuel and lots more.

Front axle 2300KG of 2800KG Max (415 kpa recommended tire pressure) 

Rear axle 3760KG of 4650KG Max (650 kpa recommended tire pressure)

100Kmph recommended maximum speed at maximum weights.
While we were at it we fitted..

  • High power USB charger (next to bed).
  • Reading light and all lights can be controlled from the bed.
  • Reupholster drivers and passenger seats (plus matching seat covers) same pattern as couch/bed.
  • Fit new carpet (Genuine, you would not believe the price..) in place of vinyl. Fit extra second layer of sound proofing underneath carpet.

    Storage / Work Areas

  • 4 Cupboards (Push to open, 2 x 400mm x 540mm x 680mm H, 1 x 400mm x 200mm x 680mm H, 1 x 540mm x 170mm x 680mm H).
  • 4 Draws (Push to open, 400mm x 500mm x 100mm D).
    -- Drawers (4) can also be locked/key locked (from inside left hand cupbord beside them).
    -- They along with the 2 cupboards either side have magnetic locks that engage with the lights (including parking).
  • Removable (Magnetic) PC Shelf for Notebook etc.

Naturally you use the couch as your work chair.

Image on laptop shows power management software. You can change settings this way or via the panel on the main unit.

PC Table - Removable

Electrical System | Fuel | Climate | Water & Bathroom |  Features | Parts List | Recovery | Entertainment |
Cooking | Storage | Sleeping | 4 X 4 Features | Preventative Maintenance | Parts List |

Entertainment Systems

  • LCD TV with DVD player, media player (USB also)
  • Soundbar with Bluetooth (connect to Phone etc.)
  • Apple TV
  • Boosted TV Antenna
  • See parts list for more details.

    Large Kitchen Bench


    • 7 Overhead aircraft style storage lockers (150mm x 850mm x 300mm approx).
    • 1 Sealed "Coffee, Sugar" storage unit under sink (130mm x 270mm x 160mm).
    • 1 X Rear Shelf below rear window 2.2m x 160mm x 160mm (Can be subdivided).

      Rear Shelf and Armrests Shelf. Note: Armrests are custom cushions.

    • 1 X 3 Hook Coat Hanger (between cab and shower areaa).
    • Boot storage (850mm W x 350mm H x 1.5m W Approx. usable) The boot also contains the batteries etc.

      Kettle shown for scale.

    • Long item Storage Area 1.4m x 60mm x 350mm (Polls etc., Under main cupboards).


    Beds / Living Area

    • Full width couch with movable arm rests turns into bed 1.1 W x 2.3m L.
      Bed can be altered to 1.4 wide x 2.3m (Double+ see notes below bed image).
      -- Option of higher / wider bed allows the area underneath to be used as storage if required.
    • Front seats can be used as bed via insert that fits between driver and passenger seats.
    • Headroom for 6' 2" (Approx 1.9m).
    • Full sized shower / Toilet (1.95m H x 800mm D x 900mm W).

    Couch in bed position

    If the bed set-up is changed so it's at the same height as the bench then it can be 300mm wider. This requires a folding mechanism and would also use the rear shelf area.
    Shown with PC work island in place, remove for sleeping 2 (via magnetic mounts). Note the front seat can be used as single bed.

    • Cabin internal area approx 18 m2 volume (4m L x 1.9m H x 2.4m W).

      Cabin area


    Toilet Slide Out

    Shower and Toilet

    Access to Cab from Cabin

    Handy for stating engine for battery charging or emergency cab access.
    (Get out of here! Without going outside..)

    Access (under TV) is not throughway but you'll get through easily if you really need to (easier with passenger seat in down position which you can change from the cabin).
    The opening also allows for air flow from cab climate systems if wanted.
    If you were idling the engine to charge batteries the heating (or cooling) may as well go into the cabin.

    Extra Service Items

    Preventative Maintenance - Overhaul Gearbox Transfer Box, Replace clutch, Bushes, Shockers.

      The gearbox was in good condition given the low KMs. Synchros were starting to wear, there was one gear (reverse) with a mark on it (Replaced = $1500 made no difference but better safe than sorry), a few bearings were not 100% (but normally would not be replaced either) we replaced them for peace of mind.

      Total cost for overhaul (and testing see below) was in the order of $16k. We'd already done the clutch. Complete details available.

    Even though the Fuso only had around 47,000kms when we started the project we've seen to:
    (While working on it may as well "do the lot")

    • New clutch.
    • Upgrade 4x4 mode switching (a known problem in this model) so that it engages within a few seconds and disengages instantly. 
      Included new pneumatic module, vacuum hoses changed to rubber, new solenoids.
    • Overhaul Gearbox and Transfer case.
    • New shockers all round.
    • Full safety check & service.
    • New windscreen (even though the old one passed the roadworthy).
    • Professional engine tune for noticeably more power & torque. (See parts list)
    • Various other mechanical items such as suspension bushes.

    • We looked into fitting a 2 speed transfer case. Most people recommend low range 2nd gear for problem situations.
      This works out to only be around 18% lower than 1st gear on a single speed box!

      For "technical" competitions you may want lower ratios but this vehicle is not designed for that purpose. There will be places that a tricked up 4x4 ute can go that this vehicle can't. By the same token you can have a shower after a hard day lounging around watching them dig each other out!
      Gear ratios are (1) 5.494 - (2) 3.193 - (3) 1.689 - (4) 1.000 - (5) 0.723 Rev. 5.494 low range increases the turns by 1.9.
      So 3.19 (2nd) x 1.9 (low selected) = 6.0 (2nd gear/low) vs. 5.5 (Std 1st). Put another way you'd only knock 1kmh off what would have been 5kmh if you use (Std) 1st.

      We were also interested (confession, it was a motive to strip everything down) to see if (transfer case) gear noise (mainly noticeable from 80-100Kph) could be cut down. Because the tires are fairly quiet it's more noticeable than it would be with most off road tires. The answer is no. Fuso transfer box gears are cut so they are as strong going backwards as forwards (normally not the case, gears are stronger in one direction), this adds some gear noise and can't be avoided in a FG.
      Canter FG 4x4s all seem to have this "feature". Most owners don't notice it because of their tires and/or (open/chassis) body type, possibly they don't do much work above 80Kph. The interesting thing is at 110Kph it goes quiet again, not that we recommend that speed for most Australian roads.

    Fitting Tire Pressure Monitoring System (TPMS)

    Completed, see parts list. The system uses wireless transmitters fitted to the inside of each wheel.
    Sensor batteries should last for 2 years. They go into sleep mode after 1 hour of no motion.


    Each spare wheel weighs almost 75kg.
    Carrying around 2 spares for general touring seems a waste, if you know the pressure is falling you can take action such as using a can or 2 of Puncture Sealant.
    The RV comes with a 240V air compressor (and 2 cans of Sealant) so keeping most leaks under control shouldn't be a problem, at least till you can get to the next town.
    Sure for expeditions into the middle of nowhere it would be wise to carry a spare wheel, or 2.



    Easy Access to AC Filters, Water filter, Main plumbing items

    The "main panel" is easily removable via 5 screws. You sit it on top of sink as per image below if you need to do some maintenance on items in this area.

    Main Kitchen Panel


    Upgrades by ATW


    Super Single Wheels, Parabolic Suspension etc.

    Super Single Advantages

    Changing dual wheels to super singles offers the following advantages:-
    - Significant improvement in off-road ability particularly in sand and mud.
    - Eliminating the problem of rocks caught between the rear dual wheels
    - Changing/checking tyre pressure reduced to 4 and not 6 tyres.
    - Only one spare is needed


    Changing the tyre size from 32" to 37" offers the following advantages:-
    - Improved ground clearance. ( Diff height change + 50mm )
    - Improved approach, departure and ramp over angle.
    - 14% lower engine RPM
    - A Fuso Canter at 95PKH ( GPS Reading) is 2650RPM after fitment is 2300RPM = 13.3%
    - Less in cab engine noise at the same speed
    - Improved fuel economy, as bigger rolling diameter.
    - The torque of the vehicles is very capable to handle the larger size with ease.
    - The ride is significantly improved.


    On-road tyre pressure is recommended at 45/50 Psi unlike the OEM wheels at 80 Psi, or the Toyo's on 19.5 rims at 80/120Psi


    Super Single Wheel Conversion

    As all wheels are the same having 2 spares makes this RV virtually unstoppable.




    Bull Bar


    This RV project is based on the 4000 series mining bus made by ATW


    ATW – Manufacturer of 4x4 buses and other specialized 4x4 vehicles for Eco-Tourism operators; commercial drilling, mining and mineral exploration companies. Our 4x4 buses are renowned worldwide for their safe operation, sturdy and long lasting construction, operating in extreme terrains and highly corrosive environments. All vehicles are based on Japanese or European 4x4 truck chassis that are commonly available through existing dealer networks and incorporate specially developed passenger modules by ATW.

    ATW INCLUSIONS: • Duragal Frame built to ADR 59 ROPS. • 19.5” super single wheel conversion. • OH&S compliant, IP66 automatic electric step. • Low maintenance, tough and corrosion proof inner/ outer fiberglass body shell. • Offload body mounting system. • Reverse beeper & rotating beacons roof-mounted front and rear of vehicle. • “White noise” cancelling squawker. • All appropriate mine safety signage and Class-1 reflective side tape. •All metal access / egress steps and handles. • Water proof interior. • Sealed rear boot with LED lighting and wheel changing tools securely mounted. • Rotating beacon rear with all ADR signal lighting molded into body. • Sock ring pass-through between cab and passenger module. • Driver and passenger SRS air bags in cab.

    We are not associated with ATW.

    PDF Brochure for information only. Several items are different from our project 4X4 RV.

    • We understand the price for a new 4000 series bus is around $260,000 AUD.

    Basic Truck Specifications before any alterations by ATW (many vary) PDF


    The only downside is you will become famous :) We guarantee that people will approach you in places from Bunnings to Petrol stations mostly with thoughts like the random post you see below. The poster did not know us but their friend (our mutual) did and passed it on to us!

    Random Facebook post 

    FOR PRIVATE SALE (VIC/Australia O4O7O64361 - No sales calls.
    Note there are 3 pages, the ones in red below are the other 2.

    Electrical System | Fuel | Climate | Water & Bathroom |  Features | Parts List | Recovery | Entertainment |
    Cooking | Storage | Sleeping | 4 X 4 Features | Preventative Maintenance | Parts List |

    NEW! VIDEOS (Keep checking back as we add more)

    Advertised for sale with current price here.