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.
| LO 1801 A | |
|---|---|
 LO 1801 A fire engine | |
| Overview | |
| Type | Truck |
| Manufacturer | VEB Robur-Werke Zittau |
| Production | 1965–1973 |
| Assembly | East Germany: Zittau |
| Body and chassis | |
| Class | 1.8 t truck |
| Body style | Forward control truck |
| Layout | Front engine, all-wheel-drive |
| Platform | Robur |
| Related | LO 2501 / LD 2501 |
| Powertrain | |
| Engine | LO 4/1 (Otto, 3345 cm3, 51.5 kW) |
| Transmission | Manual five-speed synchromesh gearbox and two-speed splitter gearbox; 10 forward, 2 reverse gears |
| Propulsion | Tyres |
| Dimensions | |
| Wheelbase | 3025 mm |
| Length | 5350 mm |
| Width | 2370 mm |
| Height | 2530 mm[1] |
| Kerb weight | 3200 kg[2] |
| Chronology | |
| Predecessor | Robur LO 1800 A |
| Successor | Robur LO 2002 A |
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.[3]
Technical description edit
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, as well as four tube, and two square-shaped crossmembers. It comes with only few grease nipples.[4] 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.[5] The steering system is a worm-and-lever steering system.[4] All four wheels come with 9.00—20 inch rims, 10—20 inch extra tyres,[6] and drum brakes. Robur installed a dual-circuit braking system.[4] 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.[6]
The gearbox is a manual, five-speed, dog-leg[7] gearbox with synchromesh and helical gearing in gears 2–5. First and reverse are straight cut gears without synchromesh.[8] The splitter gearbox 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.[9] A dry diaphragm-spring single-disc clutch, type T20K/DZ, transmits the torque from the engine to the gearbox.[10] 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).[11]
Technical specifications edit
| 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 cm3 |
| 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)[1] |
| Specific fuel consumption | 250 g/PSh (340 g/kWh) |
| Source, unless otherwise stated | [11][12] |
| 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[6] |
| Clutch | T20K/DZ single-disc dry clutch[10] |
| Gearbox | Five-speed[8] + two-speed splitter[9] |
| 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 | [1][2] |
| Electrical system | |
| Generator | DC generator, 41.7 A, 12 V, 0.5 kW[13] |
| Battery | 1 × Lead-acid battery, 12 V, 105 Ah[6] |
| Starter | 12 V, 1.3 kW[14] |
| 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 | [15] | ||
References edit
- ^ a b c VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 14 (in German)
- ^ a b VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 15 (in German)
- ^ Oswald, Werner (ed.): Kraftfahrzeuge der DDR, (2nd ed.), Motorbuch-Verlag, Stuttgart 2000, ISBN 3-613-01913-2, p. 230 (in German)
- ^ a b c VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 10 (in German)
- ^ VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 9 (in German)
- ^ a b c d VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 11 (in German)
- ^ VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 16 (in German)
- ^ a b VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 7 (in German)
- ^ a b VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 8 (in German)
- ^ a b VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für den Motor Typ LO 4/1 für Fahrzeugtyp LO 2501 und LO 1801 A, VEB Fachbuchverlag Leipzig 1967, p. 63 (in German)
- ^ a b VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für den Motor Typ LO 4/1 für Fahrzeugtyp LO 2501 und LO 1801 A, VEB Fachbuchverlag Leipzig 1967, p. 8 (in German)
- ^ VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für den Motor Typ LO 4/1 für Fahrzeugtyp LO 2501 und LO 1801 A, VEB Fachbuchverlag Leipzig 1967, p. 9 (in German)
- ^ VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für den Motor Typ LO 4/1 für Fahrzeugtyp LO 2501 und LO 1801 A, VEB Fachbuchverlag Leipzig 1967, p. 57 (in German)
- ^ VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für den Motor Typ LO 4/1 für Fahrzeugtyp LO 2501 und LO 1801 A, VEB Fachbuchverlag Leipzig 1967, p. 60 (in German)
- ^ VEB Robur-Werke Zittau (ed.): Reparaturhandbuch für die Fahrgestelle der Lastkraftwagen LO 2501 / LD 2501 / LO 1801 A, VEB Fachbuchverlag Leipzig 1966, p. 12 (in German)
External links edit
| Robur lorries from 1960 until 1991 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960s | 1970s | 1980s | 1990s | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |||||||||||||||||||||
| LO 2500 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 2500 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 1800 A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 2501 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 2501 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 1801 A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 3000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 2002 A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 3000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 2002 A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 3001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 3001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LO 3002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 3002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| LD 3004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||