Open paddock at Schleizer Dreieck

Open paddock at Schleizer Dreieck

We were up early and our way should first lead to the paddock at Schleizer Dreieck, where there was already a lot of activity. Wonderful to look at this huge collection of historic and new motorcycles and to get into conversation with many a participant.

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Right at the entrance we met the rider of a Bultaco racer, from 1958 to 1983 a quite successful Spanish motorcycle manufacturer from Sant Adrià de Besòs in Catalonia. The company was originally founded by Don Paco Bultó, grandfather of Spanish racing driver Sete Gibernau.

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Its products were powered by single-cylinder, two-stroke engines and were mainly used in motorsports - particularly in trials and road racing. Over time, some of these models became valuable and sought-after collector's items. Many machines are still in use today in historic motorsport. The age of the driver is also interesting, a proud 83 years.

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Immediately afterwards we came across a Horex team. In the founding year of 1923, the then 22-year-old Fritz Kleemann built the first "real" Horex, a 248 cc machine that also proved itself in racing. The cylinder made of light metal with a shrunk-in liner helped Kleemann to win its first races. The motto was: "Built by motorcyclists for motorcyclists".

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A pioneering construction by Hermann Reeb, who joined Horex in 1927, was the parallel two-cylinder with overhead camshaft designed in 1932. This long-stroke engine had a crankshaft with three bearings and a camshaft with three bearings, which were connected by a chain to the right-hand side of the housing was driven.

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The sporting successes include Karl Braun's German championship in the sidecar class, who enlarged the engine to 1 liter displacement (80 mm × 99 mm) and installed a fan for supercharging.

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The Birmingham Small Arms Company, BSA for short, is a British motorcycle manufacturer and former automobile, bicycle and weapons manufacturer based in Birmingham, England. In the mid-1940s, BSA increasingly built compact two-cylinder engines.

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The classic English twin with a 360° crank pin offset was produced as the BSA A7 with 500 cm³ from 1946 and as the A10 with 650 cm³ displacement from 1949, first with a rigid frame and later with swing arm chassis.

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As was usual at the time, the gearboxes were housed separately in a separate housing. The so-called "pre-unit" models (with separate engine and transmission) were replaced in 1962 by the A50 (500 cc) and the A65 (650 cc).

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The new models had so-called "unit" engines in block engine design with engine and transmission in one housing. The engine design changed significantly. While the A7 and A10 were classic British long-stroke twins, the new models were short-stroke. This did not go down well with customers.

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Please also read:

100 years Schleizer Dreieck – 600 racing vehicles

Tim Apolle - At home in Billroda and in the world


Life | Outdoors