Karosa C 734
Karosa C 734 in Jablonec nad Nisou, Czech Republic
Overview
Manufacturer	Karosa
Body and chassis
Doors	2, air-operated
Floor type	High-floor
Chassis	semi-self-supporting with frame
Powertrain
Engine	LIAZ ML 635 horizontal straight 6 Diesel engine LIAZ ML 636 N horizontal straight 6 Diesel engine
Power output	148 kW (198 hp) (LIAZ ML 635) 155 kW (208 hp) (LIAZ ML 636 N)
Transmission	Praga 5-speed manual
Dimensions
Length	11,055 mm (435.2 in)
Width	2,500 mm (98.4 in)
Height	3,165 mm (124.6 in)
Curb weight	9,500 kg (20,900 lb)-10,050 kg (22,160 lb)
Chronology
Predecessor	Karosa ŠL 11
Successor	Karosa C 934

Karosa C 734 is an intercity bus produced by bus manufacturer Karosa from the Czech Republic, in the years 1981 to 1996. It was succeeded by Karosa C 934 in 1996.

Construction features

The Karosa C 734 is the basic model of Karosa 700 series. C 734 is built on a common frame and body with the city bus models B 731 and B 741. The Body is semi-self-supporting with frame and engine with manual gearbox in the rear part. Only the rear axle is powered. The front axle is independent and the rear axle is solid. All axles are mounted on air suspension. On the right side are two doors. Between the axles underneath the bodywork is a luggage compartment with a volume of 3.5 m³. Hot water heating is provided, and is efficient at temperatures lower than 0 °C, however, the problem of the whole bus is controlling the flow of heat. Difficulties in ventilation and cooling are experienced during high exterior temperatures, since the only ventilation is two small sliding windows on the right side and three on the left. Forced ventilation from two heating system fans can not effectively exchange air. Seats for the passengers are spaced as 2 + 2 with a central aisle. The driver's cab is not separated from the rest of the vehicle. C 734 (like other variants of the 700 series) had undergone many modifications during production, which should ensure better serviceability of these buses (especially newer, more powerful engines).

Production and operation

Serial production started in 1981, and continued until 1996.

Currently, the number of Karosa C734 buses in service is decreasing, due to advanced age of buses.

Chollima-973

A number of Karosa C734 were converted into trolleybuses by the Pyongyang Trolley Bus Factory in the 90s with the conversion finishing in 1997.^[1] These trolleybuses are the second most common vehicle in Pyongyang's trolleybus systems behind the newer articulated Chollima-091.^[2] They also serve in Pyongsong.^[3] Since then, some vehicles are converted into work cars by adding a platform on the roof.^[1]

Historical vehicles

• Private collector in Prague (1 bus, ex Czech army, year 1982)
• Private collector in Otvovice (1 bus, ex Lamer, year 1990)
• Probo trans Beroun (1 bus, year 1982)