Ruud Heerkens

General Information

Manufacturer and model Steyr 12M18 (SW)
Name Ruud Heerkens
Country Netherlands
Year of manufacture 1987
For sale? yes


Engine type WD 612
Cubic capacity 6600
Number of cylinders 6
Horsepower 180 / / 130kW
Torque 630
Diesel injection system optimised


4x2, 4x4, 6x6, 8x8 4x4
Wheel base 3500
Number of seats Currently 2, for now 2-point harnass will suffice as 3rd seat
Tyre size 395/85R20
Rim size split rim type
Type of tyre Michelin XZL
Tank capacity original 180L tank currently, will expand to ~230L with integrated small passage / offroad bypass
Diesel filter no
Permanent or manually selectable 4-wheel drive Permanent
Diff locks Front, Rear, Middle | Street & terrain + crawler


Manufacturer of the cabin Dornier FM2
Inner dimensions (LxWxH) ~4250x2030x1990 (LxBxH)
Cabin material Aluminium
Kind and thickness of insulation Original Dornier foam insulation + hollow room for air circulation
Number of beds 2 (+1)
Windows Outbound
Subframe Spring loaded frame on rubber

Floor plan

Explanation of floor plan
Fixed double bed over large storage compartiment. U-shape diner converts to 3rd sleeping place. Fixed kitchen with storage cabinets and appliances.


Material of furniture 16mm
Clear coated, waterproof daycare type approved birkenmultiplex.
The complete interior build was done in close cooperation with a local woodworking company. 3D planning and good communication is key when working together.

Cooking stove

Cooking stove CASO induction cooking plate
Gas installation Outside slide out Camping GAS camp stove oven

Refrigerator; cool box

Manufacturer and type of fridge / cooler Waeco coolfreeze cf-35, which will later serve as on board freezer + small box in the truck cabin for cold drinks on the road
Coolmatic CRX 110 planned as the main fridge in a later stage.

Power supply

Voltage in the chassis 24V
Voltage in the cabin 24V=DC, 220V~AC
Charging converter 24V-12V Victron Orion -Tr 24/12-10 (120W) non galvanic seperation (currently not used we manage to keep at 24V)
110V / 230V in the cabin? yes
Inverter Victron Multiplus 24/1200-25

Capacity of batteries in the cabin

Capacity of batteries in the cabin 24V-220Ah
Battery type Victron AGM Accu 12V/220Ah Telecom
Battery charger for cabin batteries Victron Multiplus 24/1200
Battery management Victron Battery Balancer + Victron BP-100

Power generation

Solar capacity 2x 300Wp Blue solar Mono crystalline 24V panels
Solar controller Victron MPPT 100/30
Fuel cell no
Power generator not installed
55Ah Dynamo coupled over Cytrix 120/24, Victron Blue Smart IP65 12/10 start battery loader

Heating system

Manufacturer and type of heating system After dropping the Webasto 2000ST diesel heater, a 24V floor entresol heating system is installed.
Warm water processing Elgena kb3L 24V/400W
Cab heating Hydronic connection in the cooling circuit by previous owners still present

Gas system

Explanation of gas system
No gas inside

Water system

water flow Jabsco Parmax 2,9 24V
Water filtration system Pure One mixed filter double pass + continuous O3 (ozone) generation in the tank
Capacity of fresh water tank(s) Main tank when traveling 110 liter or 25 liter canister for short trips (weekends)
Capacity of waste water tank(s) 30L grey water tank


Manufacturer and type of toilet porto-poti (just in case)
Capacity of black water tank not installed

Vehicle accessories

Rear carrier Looking for a solution to use the rear access door and have a bike rack attached as well, tips and ideas are welcome.
Roof rack Self build with LED bars
Storage boxes RVS 1000x500x500
Outside cooking facilities Campingaz Camp Stove oven
Awning Thule Omnistor 1200 3000mm
released 09.02.17 
owner Ruud Heerkens 
views 10822 
filled out 100% 
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