the Volvo is quicker off the mark than the lively
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Daf Optare Delta (CM 18-24 May 1989) and the smaller ACE Cougar (CM 7-13 March).
When we took our bus over CM's PCV test route it proved relaxing and comfortable to drive despite horrendous traffic congestion. Its lively acceleration allowed us to make good use of the few gaps which appeared in the central London traffic, We also liked the BlOM's tight turning circle, which made light work of the housing estates near Harrow which are usually the preserve of mini and midibus routes.
Ground clearance was no problem on our test route, although the front end did touch the road surface when we were reversing the Citybus into its overnight parking place. The Blackburn bus is fitted with a modified exhaust system, with the outlet pipe incorporated in the offside panelling to give greater clearance.
Our route includes a short section of the M25 near Rickmansworth. Here the Volvo's geared maximum speed allowed it to cruise at almost 90km/h (55mph).
The gearchange from the Allison MT647 is predictable and smooth. The throttle kickdown is incorporated with the top two gears of the four-speed unit, The Allison is not standard equipment and was specially specified by Blackburn. It does not have an integral retarder so the driveline is fitted with a Telma CC160 electro-magnetic retarder, activated by initial pressure on the service brake pedal.
During test-track emergency braking the bus pulled up quickly in a straight line, with peak deceleration forces close to 0.9g.
Throughout our test we found little to criticise. The bus proved stable on the ride and handling circuit. Its park brake held, and it restarted easily on the 25% (1:4) test hill. Noise levels in the cab of 70.6dB(A) at 48kinfh and 75.5 dB(A) at 77km/h are reasonable but are not the quietest in this class of bus.
The 1310M will cause few problems for fleet engineers. It has been in production for around 10 years and is one of the most reliable chassis of its type. Its straight driveline is proven in terms of its efficiency, simplicity and reliability.
Visual level indicators, situated forward of the engine next to the oil filler on the nearside of the vehicle make the usual daily checks easy.
Chassis back-up for the BlOM is well established nationwide and makes the vehicle equally suitable for use by large operators with well equipped maintenance operations or by smaller private operators with only a few vehicles.
Volvo and Leyland bus products are both backed by the Volvo Bus Limited's network of 24 specialist parts and service dealers around the country.
East Lancs is one of Britain's smaller bus body builders, but it is big on experience and has a reputation which is reflected by a full order book.
The EL2000 body has been fitted to a number of chassis, including the rearengined Dennis Falcon. It has also been used to rebody Leyland Tiger and Atlantean chassis.
Volvo's BlOM Citybus single-decker is clearly a competent vehicle. It offers acceptable step heights, it doesn't look at all bad and its aluminium body should last well. Its lively performance and comfortable driving position will please drivers.
Fuel consumption is comparable with its rivals in the full size single-deck bus market and it has the benefit of the back-up and support from Britain's largest bus chassis manufacturing and supplying company. All round it's a thoroughly practical bus.
El by Noel Millier