New Two-stroke Air-cooled Oiler
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rAA 1-TON .van similar in appearance, layout and dimensions to the German Volkswagen, but with a two.cylindered two-str4e air-cooled oil engine at the rear, is now being built in Austria. A prototype of this new Mien van, made at Rottenmann. Styria, was displayed at the Vionna Show, which coincided with the Geneva Salon.
The van is made almost entirely of aluminium .alloy, apart from the pressed-steel underframe supporting the iloor and body, and as a complete vehicle weighs under 15.1 cwt. The 991 c.c. oil engine, with the two cylinders at 90°, was designed by Prof. List, of Graz University. and is being built by Warchalowski, of Vienna.
Many details of the engine are similar to those of the Turner unit, which was also designed by Prof. List. It operates on the loop-scavenge principle and has direct injection, an output of 20 b.b.p. being derived at 3,000 r.p.m.
The engine, differential and gearbox, using light-alloy castings and bolted at the clutch bell-housing to form a unit, weighs 2 cwt. It is claimed that the van has a maximum speed of 50 m.p.h. and a fuel-consumption rate of 53 m.p.g.
Its wheelbase and body dimensions are similar to those of the Volkswagen and the Patten van has independent suspension of all four wheels and fullforward control. A four-speed synchromesh,gearbox is employed.
Other Austrian developments disclosed at the Vienna Show include Graef and Stift six-cylindered twostroke oil engines of 125 b.h.p. and 180 b.h.p. for use in coaches and buses, and a four-stroke unit of 135 b.h.p. for a 6-ton lorry. Steyr introduced a 17-seat bus equipped with a 55 b.h.p. petrol engine, which is also to be fitted in a 2-ton chassis.