BJ Y6 1
| BJ Y6 1 | |
|---|---|
| Number: | 1 |
| Manufacturer: | Nydqvist och Holm , Trollhättan |
| Year of construction (s): | 1933 |
| Retirement: | ? |
| Axis formula : | 1A |
| Gauge : | 1435 mm ( standard gauge ) |
| Length: | 9.75 m |
| Width: | 2.70 m |
| Fixed wheelbase: | 5.50 m |
| Empty mass: | 7.5 t |
| Service mass: | 12 t |
| Continuous output : | 105 hp |
| Driving wheel diameter: | 1,000 mm |
| Motor type: | 6 cylinder petrol engine |
| Motor type: | Maybach OS 6 |
| Rated speed: | 1,900 min -1 |
| Power transmission: | mech. Gear transmission |
| Seats: | 35 |
| Standing room: | 15th |
The rail bus of the series Y6 No. 1 was procured by Bergslagernas Järnvägar in 1933 for the Alvhem – Lilla Edet railway from Lödöse – Lilla Edets Järnvägsaktiebolag .
The vehicle was purchased from Nydqvist och Holm in Trollhättan in order to partially replace the passenger trains on the route that had been operated by steam locomotives up to that point and to make the route more user-friendly.
Technical specifications
The two-axle rail bus was delivered with 35 seats and 15 standing places. The width was 2.70 m, the seating arrangement was 2 + 3 per row. The seats were made of a light steel frame and covered with leather. The inner ceiling height was 1.95 m, the total length 8.65 m, the wheelbase 5.50 m and the overhang behind the rear axle 2.31 m.
The vehicle had an unladen weight of 7.5 tons. At full load with passengers, the total weight was around twelve tons. It was powered by a Maybach 6-cylinder petrol engine with 1,900 revolutions per minute. This made 105 hp and was operated with a mixture of gasoline and 25% alcohol. He had two Solexvergaser and two independent ignition systems, a Bosch - magneto ignition and a battery ignition . The cooling takes place with a lamellar cooler with blinds , which was automatically regulated by a thermostat .
The mechanical gear transmission had three forward gears and one reverse gear. The vehicle had good acceleration and reached a speed of 120 km / h during test drives. The normal speed was set at 85 km / h. Braking was done by two completely independent systems that acted on the brake drums with internal jaws. The foot brake acted on all four wheels, both mechanically and with the Bosch Devandre brake booster , which improved braking performance. The brake worked with negative pressure from the engine, reinforced by a vacuum container with 85 liters and had a check valve. The parking brake provided with a lock acted directly on the rear wheels. With the effective braking effect, the rail bus could be brought to a standstill at 70 km / h within 20 seconds. There were handles for the emergency brake inside the railcar .
The axles had ball bearings . The outside of the vehicle was planked with sheet metal specially treated to prevent rust. Both wheel tires on the front axle were mounted on rubber springs, a new design at NOHAB at the time. This ensured a smooth, vibration-free run at higher speeds. The front axle was built to curve so that the wheels adapted to the track position when cornering. In addition, the car body was fitted with rubber springs on the chassis.
commitment
On the 15-kilometer route from Alvhem to Lilla Edet, the rail bus was used for passenger transport, with the exception of Saturdays and Sundays, when steam trains had to run due to the number of passengers. During test drives to determine the schedule, a total running time of around 21 minutes was determined for the route at a maximum speed of 75 km / h. An average of eight stops between the end stations were taken into account. The railcar was designed so that it could stop at stops outside the train stations. On request, it also stopped at major crossroads. The average distance between stops was only 1.7 km. The railcar driver took over the ticket sales as well as the mail and goods acceptance.
The average fuel consumption during the test drives was calculated to be 2.88 liters per mile . The savings to be calculated were set at three liters per mile.
The rail bus saved a coal guard, a conductor and a stoker, plus a calculated amount for sickness reserves. This calculation resulted in a saving of around 9,300 crowns per year.
As a result, a few years later, additional rail buses with modified construction parameters were procured for the Järnvägar mountain camps network .
Web links
Bussdrift å Bergslagsbanan. Retrieved April 4, 2013 (Swedish).
Individual evidence
- ↑ Rudolf Wolf: Maybach engines and automobiles in the Rhine-Neckar triangle and the Palatinate . Books on Demand, Norderstedt 2008, ISBN 978-3-8334-8938-9 , The OS version of the MAYBACH W5 engine as a drive source for the semitrailer tractor and tractor unit built by HEINRICH FUCHS WAGGONFABRIK AG HEIDELBERG, p. 241 ( book [accessed April 6, 2013]).
- ↑ Rullande materielen vid trafikförvaltningen Gothenburg Dalarne-Gävle. (PDF; 149 kB) November 1946, page C 3 , accessed on April 6, 2013 (Swedish).