AT THE HEART OF THE ROAD TRANSPORT INDUSTRY.

Call our Sales Team on 0208 912 2120

Facts and Figures that Have Been Ascertained by Bury Corporation

17th March 1933, Page 90
17th March 1933
Page 90
Page 90, 17th March 1933 — Facts and Figures that Have Been Ascertained by Bury Corporation
Close
Noticed an error?
If you've noticed an error in this article please click here to report it so we can fix it.

Which of the following most accurately describes the problem?

IT was in September, 1931, that the transport department of BITRY Corporation purchased five Crossley standard oil-engined double-deck buses, so that it has had a term of experience that provides reliable and useful data. The power unit is of the sixcylindered type, with a bore of 4-7u ins. and a stroke of 6 ins., and embodies a seven-bearing crankshaft. The cylinders are cast, with "wet" sleeve liners.

From the date when the vehicles were commissioned until April, 1932, exact records were not kept of the performance of the buses, but some bearing and transmission troubles were experienced during that period. In April last the engines were modified and certain adjustments made to the transmission system by the chassis maker. Prom April to November, 1932, the aggregate mileage covered by the five buses was 157,158, an average of 31,432 per bus.

Mr. A. C. Fenwick, the general manager of the tramways and motors department, informs us that similar methods of inspection and maintenance are employed in regard to the oil engines as in the case of petrol vehicles,

except in respect of lubrication. In the case of the oilers, the oil in the sump is renewed every 1,500 miles, whereas, in the case of the petrol engines, the sumps are cleaned after running 3,000 miles.

The average cylinder wear on one of the oil engines after running almost 85,000 miles was .003 in., and the bearings were still in excellent condition. Taken as a whole, Mr. •Fenwick estimates that the annual additional cost of lubrication and maintenance of the oilengined bus, as compared with a sixcylinder petrol vehicle, is g40.

So far as fuel costs are concerned, the following has been the experience of the Bury undertaking during the past eight months :—Petrol-engined doubledeck buses, operating on routes previously served by tramcars, 4.8 m.p.g.,

equal to 2.917d. per mile run. Oilengined double-deck buses, operating on the same route under identical conditions, 9.03 m.p.g. (.377d. per mile run).

Tags

People: A. C. Fenwick

comments powered by Disqus