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Compressor-equipped Land-Rover Demonstrated
Page 85
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lody Space Left Clear in New Broomwade Development
71RST demonstrations were given last week by Broom and Wade, Ltd., ugh Wycombe, Bucks, of their latest evelopment—the mounting of one of lei" air compressors (for powering air )ols such as road drills) in a Land:over, in this case a long-wheelbase lode] with the 2.25-litre diesel engine. 'he main feature of the design is that nderfloor location of the compact comressor leaves the usefulness of the Landover as a load carrier unimpaired, the oor area being clear.
The Broom wade WR.I00 single-stage, il-cooled compressor is mounted below te floor and behind the rear-axle centre ne. Drive to the compressor is from a mrbox power take-off and at a speed of ,300 r.p.m., 100 Cu. ft. of air at 100 p.s.i. produced per minute.
An automatic control device on the lgine reduces its speed when the desired eximum pressure is reached. When the 7essure in the air receiver begins to -op, a suction unloader valve opens itomatically and engine speed increases proportion with the demand for corn-essed air. An air receiver is mounted flow the floor at the rear of the com.essor, the unloader and charging valves :ing above the nearside rear-wheel arch. ompressed air outlets are mounted at e rear of the body.
Compressor cooling is by means of a circulatory oil system. Oil from a servoir in the air receiver is passed to oil cooler situated in front of the .hide radiator, before returning to the .mpressor through a filter. Oil pressure is supplied by a gear-type oil pump on the end of the compressor rotor.
Although basically standard, the LandRover chassis has been modified slightly to accommodate the Broomwade equipment. The possible continuous running of the engine while the vehicle is stationary has necessitated various alterations; a modified fan is fitted and to provide adequate engine lubricating oil cooling, a non-standard sump and an oil cooler are also incorporated. Stringent tests have been carried out by the Rover Co., Ltd., on the converted vehicle and the design has now been approved by them. Part of these tests are said to have proved that continuous running in an ambient temperature of 32° C. (90° F.) will not produce excessive engine lubricant or cooling system temperatures.
On the demonstrations, the equipment was shown to be capable of supplying sufficient air for two road breakers being used continuously breaking up a concrete road. It was also shown providing air for various hand power tools and an air hoist.
The price of the converted Land-Rover as shown is £1,425. It is likely that a petrol-engined version will be developed soon and this would cost about £100 less. As the price of a Broomwade mobile air compressor with a similar capacity is £1.050, these prices appear reasonable when it is considered that the vehicle can be used as a completely standard Land-Rover and full-cross-country performance is retained.