OKA NT and Camper Back-Section Specs as of 2015

The truck

Standard setup

Vehicle

OKA: OKA, Bibra Lake, WA, Australia (Note: the company exists again since 2018)
OKA-NT cab-chassis

Motor

"Cummins" ISBE 170 30 (Emission standard Euro 3)
4 cylinder; 3.99 litre; common rail turbo diesel;
170 HP 125 kW @ 2500 rpm; 600 Nm @ 1500 rpm

Gearbox

"New Venture" NV4500HD
5-speed manual

Transfer case

"BAE / Vickers". Semi-permanent 4-wheel drive; 2-speed; no diff between front and rear axle (e.g. centre locked if in 4WD)

Axles

"BAE / Vickers". Front: live axle 3485 kg; Leaf springs (12 leafs); 4 shock absorbers (2 optional)
"BAE / Vickers". Rear: live axle 4385 kg; Leaf springs (13 leafs); 4 shock absorbers (2 optional)

Brakes

Ventilated disks front and rear

Fuel tanks

2 tanks, 115 litre each (1 tank optional); The tanks have been replaced (see further below)

Options (OKA supplied)

Locking hubs

"AVM" Free Wheeling Hubs

Hub step front

OKA built

Rims

"Titan" 19.5" x 8.25" Bolt Together Rims
(OKA delivers ordinary steel rims of the same dimensions as standard)

External sun visor

OKA built

Cruise control

ECM controlled

Exhaust brake

"PacBrake" Direct Mount Exhaust Brake; 80 PSI back pressure

Extras (not supplied by OKA)

Immobilizer

"Paralizer" P 165
(mandatory to get a comprehensive insurance for the truck in Western Australia)

Tires

"Michelin" XDE2+ 305/70 R19.5 (uni directional) or, "Hancook" DH05 305/70 R19.5 (bi directional) or
"Bridgestone" M729 305/70 R19.5 (bi directional)
tubeless (two spares, one mounted on rim)

Suspension

"Bieri Kriens"; The suspension has been completely replaced due to various problems

Shock absorber

"Monroe" Magnum 60 or "Powerdown" P42372 (8 shock absorbers)

Compressed air dryer

"Wabco" Air Dryer

Roof rack

"Alu-Star"; Aluminium construction

Diesel tanks

Left tank: 160 l; Right tank: 190 l; 4 jerrycans: 80 l.

Electronic rust-proofing

"CouplerTec" HD4WD 4 emitter rust proofing system

Surveillance camera

"Navman" MiVue 700/730

Reversing camera

"WAECO" PerfectView M5L

Characteristics

Touring range

1400 - 1800 km (1900 - 2300 km with 80 l diesel in Jerry Cans)

Measurements (including back-section)

Length: Cab-Chassis 5.76 m (with back-section 5.96 m)
Width: Cab-Chassis 2.00 m (back-section 2.10 m)
Height: Cab-Chassis 2.51 m (with back-section 3.12 m)

Weight

Cab-chassis with options and extras but without back-section: ~ 3715 kg
Empty motorhome (no fuel, no water, no passengers, no load): 5520 kg
Camper fully laden incl. 2 people, 220 l water, 450 l diesel: 7245 kg
GVM: 6500 kg (7260 kg after suspension upgrade)
GCM: 9000 kg

Speed

Max. 120 km/h (typical 70 km/h on gravel roads, 80 - 90 km/h on sealed roads due to fuel consumption)

Turning cycle

~ 16 m

Fuel consumption

Equipment

Communication

CB UHF Radio installed:" iCOM" IC400Pro; 477MHz 5W (Australian Standard); Antenna: Flexibly mounted 15cm antenna on roof.
CB UHF Radio handheld: 2 "Crystal" DBH50R; 477MHz 5W (Australian Standard)
Sat-phone: Iridium "Motorola" 9575 Extreme (GPS and Emergency Call); External Antenna; Postpaid SIM card from "AST Perth"; Mail access via onsatmail.com
2 mobile phones (to call each other when separated in foreign towns)
Internet connection: "Silentwind" WebCatcher WiFi-antenna on roof or
Mobile phones used as modem to Laptop

Navigation

GPS Main: "Garmin" Montana 610; External antenna on roof.
GPS Hot-Backup / hiking: "Garmin" GPSMAP 64s; External antenna on roof.
GPS in emergency package: "Garmin" eTrex International.
PC for Navigation: "Microsoft Surface Pro 3" and Docking station; Connected to GPS Garmin Montana 610, "Garmin" GPSMAP 64s and the "Iridium" Sat-phone.
GPS Software on PC: "Quo Vadis" QV7 moving map software; MemoryMap V6; "Garmin" BaseCamp.
Paper maps: various maps and guides
Vector maps for GPS and QV7: OSM-Australia map; Tracks4Australia;
OSM-maps for some European, African and South-American countries; "Tracks4Africa"; various local South-American maps.
Raster maps for Quo Vadis QV7: "Natmap" Raster 2008 Australia map; various HEMA-Maps of Australia; 50K maps for certain areas in Australia; "bsmap" for African and South-American countries.
Raster maps for Memory-Map-6: Hema Map AusTopo250 and other free Hema Maps; Hema Desert Tracks.

Emergency and security

Extensive emergency and survival kit, packed into 2 red "Georg Utz" Rako-boxes ready to be taken out in seconds, in case the truck catches fire.
Fire extinguisher 6 kg powder-type
2 breathing masks for 10 minutes: "Braegger" Parat C
Extensive medical emergency set and literature.
Survival books and literature regarding edible local plants.
Extensive anti-theft and hold-up measures.

Repair

Full set of tools for all the repairs we are able to do ourselves.
Most commonly used and most critical spare parts.
Vise-mountable on front bumper.
Service- and repair manuals, electrical diagrams and parts-lists for the whole truck and the equipment of the back-section (all as PDF-files).

Recovery

Manually operated winch: "Habegger" Hit 32 (3200kg lifting capacity).
Winch rope: 10 m steel rope for the manual winch.
Rope extensions: "Dynamica Rope" 11 mm; 35m long; "Dynamica Rope" 11 mm; 30 m long;
1 snatch strap 11000 kg.
1 snatch strap 8000 kg.
1 tree protector
1 hydraulic 3-stage bottle-jack 11 t .
Sand boards: 8 fibreglass-reinforced sand boards 150 cm x 40 cm from "sandbleche.de".
Earth nails: Model used by the Swiss fire brigade
4 snow chains (mainly for mud driving)
Snatch block: 1 "ARB" Snatch Block 9000. SWL. 9 t, Breaking strength 17.5 t
Shackles: 4 x 8.1 t SWL; 1 x 5 t SWL; 1 x 3 t SWL
1 Drag Chain.
1 long handled shovel; 1 spade.
1 pick-axe.
1 chain saw "Rancho" 230V~; 1300W.
1 bow saw; 1 jigsaw.
1 big axe; 1 small axe; 1 machete.

Back-Section

Cabin

"Alu-Star": http://www.alu-star.com
Aluminium-honeycomb - PE foam - GRP sandwich.
Walls and top: 57 mm: 30 mm Aluminium Honeycomb; 25 mm PE-foam; 1.8 mm GRP
Floor: 80 mm: 30 mm Aluminium-honeycomb; 40 mm PE-foam; 5 mm rubber foam; 3 mm Aluminium; 2 mm Linoleum

Doors

Main-door: Split door; Upper part hinged at top, acts as rain and sun protection when open; Lower part hinged at the side; During the night the mozzie screen door inside the main door can be closed together with lower part of main door.
No escape-door to the driver cab.

Windows

3 big "Seitz" fold-out windows: Plastic; Double glazed; Covered by Aluminium lids for better insulation, security (RoRo-ferries) and environmental protection. The Aluminium lids can be additionally secured from the inside (RoRo-Ferries).

Hatches

2 large Polycarbonate hatches with 100% mozzie-proof flynets; can be armoured from inside for more security on RoRo-ferries.
100% rain and spray proof in lowest opening position; Can be fully opened for roof access.

Chassis - back-section adapter

100 mm galvanized steel frame sitting directly on the chassis; Flexible screwed connection to the OKA-chassis via 4 hollow rubber springs and steel guides.

Cab - back-section connection

Driver cab and back-section are not physically connected. Plugs are used for all electric connections. The back-section can be "easily" separated from the truck using a crane.

Measurements

Cabin overall: Length 3900 mm; Width 2100 mm; Height 2000 mm (w/o chassis adapter).

Heating and Cooling

Heating: Underfloor heating driven by OKA's motor cooling system or by the "Eberspaecher" Hydronic M II diesel water-heating. Thermostat controlled.
Air Condition: N/A

Electrics

House-Battery: Mastervolt MLi Ultra 12-5000; 360 Ah; ~290 Ah (80%) usable energy; Charged either by the alternator via B2B-loader or the solar controller or 230V~ from the battery charger.
Solar panels: 7 x "Phaesun" PN-SPR S 100; Theoretical max. 700 Wp;
Solar controller for house battery: "Mastervolt" SolarChargemaster MPPT 60; Max. load power 60A; Practical load current over 30A.
Battery charger / inverter / transfer system: "Mastervolt" Mass Combi Ultra 12-3000-150:
House battery charger: 150 A; Start battery charger 10A; Inverter: 3000W permanent; Transfer system: 30A.
B2B-Loader: "Votronic" VCC 1212-45 Li; Max. load power 45A.
12V= circuit breaker/switch panel: "Philippi".
System monitor: "Mastervolt" MasterView Easy and "Mastervolt" USB Interface.

Water tanks / pumps / city water

2 x 100 litres in stainless steel tanks. No connections on the side or bottom of the tanks.
Tanks withstand a car-fire without leaking.
20-litre boiler "SIGMAR Marine" water-heating boiler COMPACT 20 l; Heated either by OKA's cooling system, by the "Eberspaecher" Hydronic M II diesel water heating or by 800W 230V~ from inverter or external power.
Water pump: Water inlet: "Lilie" Smart Serie LP 1002; 18.9 l/Min; 5.2 bar (not recommended because of lousy build quality).
Water pump: Filtered water outlet: "Lilie" Smart Serie LP 1002; 18.9 l/Min; 5.2 bar (see above).
Water pump: Bore water outlet: Same pump as used for water inlet (used if water system is switched to two-water-quality-mode)
City water connection bypassing both pumps but not the filters.
Water level gauges: "VDO" Freshwater tank gauge (capacitive).

Water treatment

Water inlet: course filter followed by 2 parallel 10 µm particle filters (for better throughput).
Water tanks: Silver-Ion capsules from "Lilie".
Water outlet: 5 µm active carbon filter for the ordinary cold and warm water followed by a UVC-sterilizer for the potable water faucet: "Purion" UV 400 E: max. 6.5 l/min (400 l/h).

Kitchen

Diesel stove: "Wallas" 85Dt; Diesel; Glass-ceramic; Standard pans for electric induction stoves.
Induction cooking plate: "Caso" S-Line 2100: 230V~/2100W driven by the inverter or with external power.
Inverter Microwave/Convection Oven/Grill: "Caso" IMCG25; Max. power consumption 2050 W (1 cooking type).
Sink and faucet: "Blanco" Lantos-IF; Steel double sink; "Sonaqua" Japura WH311 faucet; all standard household equipment.
Fridge: "Wemo"-ezetil EZC 60; "Danfoss" 35 compressor; 60 l fridge; runs either on 12V= or 230V~ external power; Can be used as deep freezer
Kitchen-, side- and main-table: Plastic coated GRP-sandwich with wooden border strips. The only wood used in the whole back-section.

Hygiene

Shower: Inside shower with shower curtain; Outside shower.
Toilet: "Thetford" Porta Potti 345 Qube.

Furniture

All furniture is built on Aluminium frames. Walls are made of 5 mm GRP - cardboard - GRP honeycomb; doors are made of Alu-Cobond (Alu-Plastic-Alu sandwich).
There is no wood used at all.

Security

"Göckler" 2 kg CO Fire extinguisher; "Mentrex" Flame Stop 125 x 180 cm fire protection towel.
Removable fire/smoke alarm outside. Normally mounted in the driver cab.
Fire/smoke alarm inside.
Ultrasonic intrusion sensor in front cab, Narcotic gas alarm and CO detector inside back-section.

Tools / equipment

Bicycles

2 foldable "Tern" D8 city bikes.

Hiking gear

Tent for 2 persons: "North Face" Nebula; High quality Sleeping bags; Self-Inflatable "Therma-Rest" mattresses.
Backpacks for day-tours and for tours lasting several days.
All the necessary bits and pieces for tours lasting several days (orientation, cooking, toilet, security, first aid).