Sour 3DUK-50
The Saurer 3DUK-50 is a type IV-U bus from Adolph Saurer AG , Arbon . He was in a Series set of 74 forward-control - Post cars manufactured from 1968 to 1973. They ran under the matriculations P-24600 to P-24673.
The 3DUK-50 is the first standard left-hand drive type PostBus (except for coaches ) from the former PTT operations in Switzerland . At that time, this vehicle cost 140,000 francs and was therefore significantly cheaper than its predecessor, the last Alpine car IV-U from FBW, which had cost 170,000 francs.
In addition to operations in normal course operations, these vehicles were also used on routes with travel vehicle requirements (e.g. express route Chur-Bellinzona).
The term 3DUK-50 stands for: 3 for 2, 3 meters wide (so called Alpine width), D iesel U nterflur K ompressor with 5.0 meters wheelbase .
Data
The Saurer 3DUK-50 is powered by a 6-cylinder D1KU engine with a displacement of 11940 cm³.
| Max. power | 169 kW / 215 PS |
| Combustion system | Four-stroke diesel engine (4 valves per cylinder ), direct injection with double swirl |
| Injection order | 1-4-2-6-3-5 |
| Max. Torque (at 1300 rpm) | 78 mkp (765 Nm ) |
| Max. Full load speed | 2200 rpm |
Power transmission:
- Coupling Daimler FK18 fluid coupling ( hydrodynamic torque converter )
- Overdrive transmission FBW SP131, the motor flange-mounted, pneumatically (1972 electro-pneumatic) switched planetary overdrive gear ( type Wilson )
- Main gearbox FBW PG51, pneumatically (from 1972 electro-pneumatic) shifted planetary overdrive gearbox with four forward and one reverse gears (Wilson type)
Frame :
- Chassis frame with longitudinal beam in U-profile and welded tubular cross-members
- Leaf springs on the front and rear axles with rubber intermediate springs (hollow springs) and shock absorbers
- Equipped with a stabilizer on the rear axle
Brakes :
- Foot brake: compressed air - inner shoes - dual circuit brake with two brake shoes per wheel , controlled by a pedal brake valve
- Handbrake / parking brake: spring-loaded brake
- Exhaust motor brake: Dynamic pressure brake that can be switched on and off in stages through a closing flap in the exhaust pipe
Body type:
- Omnibus IV-U, front-wheel drive , left-hand drive
Doors :
- Pneumatically operated outward swinging doors with running boards that extend pneumatically from below , front entry in front of the front axle
Seats: 40 + 1 (driver)
literature
- Biegger, Jürg: Swiss Postbuses in Transition 1906–2006, Verlag Verkehrs-Fotoarchiv, CH-8610 Uster, ISBN 3-905170-29-9
- Biegger, Jürg: Front-wheel drive buses in Switzerland 1936–1976, Verlag Verkehrs-Fotoarchiv, CH-8610 Uster, ISBN 3-905170-37-X