# Robur LO 1801 A

The Robur LO 1801 A is a forward control off-road truck, made by East German manufacturer VEB Robur-Werke Zittau. It was produced from 1965 to 1973, alongside the on-road model LO 2501. Unlike the on-road model, the LO 1801 A has all-wheel drive, which came at the cost of a reduced payload. LO 1801 A is an abbreviation for air-cooled otto, 1800 kg payload, all-wheel drive.
Like its predecessors, the LO 1801 A was used by the East German military, police, fire brigade, and open pit mining rescue service. Export versions were called Safari.

## Technical description

The LO 1801 A is a light, 1.8 tonne, two-axle, all-wheel-drive, body-on-frame, forward control truck with single tyres.
The frame has two U-section longitudinal members, and four tube, and two square-shaped crossmembers. It comes with only few grease nipples. Both front and rear axles are leaf sprung rigid live axles, only the front axle has hydraulic shock absorbers. Differentials with a reduction of 6:35 were installed. The steering system is a worm-and-lever steering system. All four wheels come with 9.00—20 inch rims, 10—20 inch extra tyres, and drum brakes. Robur installed a dual-circuit braking system. The cab is made of steel, has front-hinged doors, a split windscreen, and split A-pillars with narrow windows for improved visibility. Unlike the LO 2501, which only seats three, the Robur LO 1801 A seats four.
The gearbox is a manual, five-speed, dog-leg gearbox with synchromesh and helical gearing in gears 2–5. First and reverse are straight cut gears without synchromesh. The transfer box is an unsynchronised, three-shaft gearbox with gearshift sleeves. It has an on-road gear, an off-road gear, and an additional gear for switching front-wheel drive. A dry diaphragm-spring single-disc clutch, type T20K/DZ, transmits the torque from the engine to the gearbox. The LO 1801 A is powered by an air-cooled, straight-four, OHV, carburetted LO 4/1 otto engine. It displaces 3.3 litres, and is rated 70 PS (51.5 kW).

## Technical specifications

Technical specifications :
| | Robur LO 1801 A |
| Engine ||
| Engine type | LO 4/1 4 VO 11,8/9,5-1 SRL |
| Operating principle and layout | Straight-four, air-cooled, four-stroke, OHV otto engine with downdraught carburetter and battery ignition system |
| Bore × Stroke, Displacement | 95 × 118 mm, 3345 cm$^3$ |
| Rated power (TGL 8346) | 70 PS (51.5 kW) at 2800 min$^{−1}$ |
| Max. torque | 22 kp⋅m (215.7 N⋅m) at 1800 min$^{−1}$ |
| Fuel type | VK 79 (leaded petrol, 79 RON) |
| Specific fuel consumption | 250 g/PSh (340 g/kWh) |
| Source, unless otherwise stated | |
| Powertrain ||
| Layout | Front engine, all-wheel drive |
| Differential locks | No differential locks; engaging front wheel drive automatically locks front and rear axle (due to lack of a centre differential) |
| Tyres | 4× 10—20″ extra single tyres |
| Clutch | T20K/DZ single-disc dry clutch |
| Gearbox | Five-speed + two-speed splitter |
| PTO | Available as a factory option |
| Measurements ||
| Length | 5350 mm |
| Width | 2370 mm |
| Height | 2530 mm |
| Wheelbase | 3025 mm |
| Track width | front: 1636 mm rear: 1664 mm |
| Overhang | front: 1200 mm rear: 1165 mm |
| Turning circle | 14,900 mm |
| Ground clearance | 265 mm |
| Fording depth | 800 mm |
| Slope angle | front: 36 ° rear: 35 ° |
| Mass | 3200 kg |
| Payload | 1800 kg |
| GVW | 5000 kg |
| Fuel tank | 90+35 L |
| Fuel consumption | 26 L/100 km (fully laden) |
| Source, unless otherwise stated | |
| Electrical system ||
| Generator | DC generator, 41.7 A, 12 V, 0.5 kW |
| Battery | 1 × Lead-acid battery, 12 V, 105 Ah |
| Starter | 12 V, 1.3 kW |
Speed ranges and gradeability :
| Gear | Speed at 2800/min (on-road gear) | Speed at 2800/min (off-road gear) | Gradeability at 1700/min (off-road gear) |
| 1st | 10 km/h | 6 km/h | 82 % |
| 2nd | 17 km/h | 9 km/h | 40 % |
| 3rd | 27 km/h | 15 km/h | 23 % |
| 4th | 48 km/h | 26 km/h | 13 % |
| 5th | 80 km/h | 45 km/h | 8 % |
| Source | | | |