A Brief History of the Marque
A Grand Prix machine fitted with a twostroke engine with water-cooled barrel and air-cooled cylinder head which developed 22 HP at 19800 rpm delivered via a separate 6 speed gearbox which could reportedly be converted to 9 speed. The engine had quite unconventional lubrication.
The DRS was reviewed in Cycle World, March 1st 1967.
The DRS is an interesting mount, built according to the latest racing two-stroke technique, but without the complications which would handicap private riders. It is a rotary disc valve two-stroke, with watercooled horizontal cylinder, air-cooled head, and chrome bore. Bore-stroke dimensions are 54mm by 54mm, and compression ratio is 17.8:1. Rear wheel output is said to be 22 bhp at 10,800 rpm... The gearbox now has six speeds, but nine will soon be fitted; gear change lever is on the right-hand side. The dry clutch runs externally on the left."
The German agent was Georg Munch of München.
Sources: MC Storico Conti; Cycle World.
N.B. There is also a DRS in the UK, Derby Racing Services - DRS Engineering Ltd, established in 1981.
If you have a query about DRS Motorcycles, or have some information to add about these classic Italian machines, please contact us.
