Arhiva pentru iulie 17th, 2009
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DUCATI 1000cs…
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DUCATI 1000cs…
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Norton CS1 – 1931…
The Norton CS1 was a British motorcycle made by Norton Motorcycles between 1921 and 1934. Originally built as a TT racer, it proved successful as a TT Replica road bike.
Development
The Norton Camshaft Senior Model 1 (CS1) engine was designed by Walter Moore in 1927, based on the Norton ES2 pushrod engine and re-using many parts. The frame was a new full cradle design and with a close-ratio kickstart-less gearbox, 8 inch brakes, Amac TT carburettor, Lucas Racing magneto and a 3 gallon petrol tank. The CS1 was the standard for racing Nortons for the next 20 years. The magneto was moved to the rear of the engine and the bottom end was a traditional Norton design, but in the side of the crankcase was the oil pump housing and a pair of bevel gears to drive the long shaft which ran in a tube up the side of the engine to a second pair of gears driving the overhead camshaft.
Racing success..
Alec Bennett riding the CS1 on its first race won the Isle of Man Senior TT in 1927 and Stanley Woods set the fastest lap at 70.99 mph before retiring.
Unknown rider Tim Hunt won the Amateur TT in following year on a Norton CS1, setting a new TT record. He later used the same motorcycle to win the Gold Medal in the Scottish Six Days Trial.
In 1928 a Junior version of the CS1 with a 348cc engine and designated the Norton CJ was entered for the Isle of Man TT. The bore and stroke of this engine was 71 x 88 mm and it looked promising but 1928 proved to be an unlucky year for Norton, as there were technical problems with Walter Moore’s redesigned cambox and only one major race was won that year. 1929 also went badly with reliability problems and only one win in the Spanish GP of 1929.
In March 1931 on Pendine Sands Joe Craig and Tim Hunt achieved a best speed on the CS1 of 118 mph. Also in 1931 the Norton CS1 took the first five places in Junior and Senior events, starting what was to prove Norton’s most successful period, and until the end of the 1930s Norton dominated international events with wins in both classes throughout the decade. Tim Hunt became the first rider to win two TT races in one week, with success in the Junior TT Race in 3 hrs 34 mins and 21 secs at an average speed of 73.4 mph and also the Senior TT Race in 3 hrs 23 mins and 28 secs at an average speed of 77.90 mph.
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NER-A-CAR – 1921…
The Ner-a-Car was a type of feet forwards motorcycle designed by Carl Neracher in 1918. Around 6500 Ner-a-Cars are believed to have been produced between 1921 and 1927 in England, and about 10,000 Neracars (note different spelling) in the US. They were manufactured in England by the Sheffield-Simplex company and the Ner-a-Car Corporation in the United States.
Design
The design had several unusual features, including an infinitely-variable friction drive transmission, and a low-slung monocoque chassis that was closer to those found on contemporary cars than other motorcycles. It also featured the first production example of hub-center steering on a motorcycle .
Models..
The earliest models had 221cc two-stroke engines. Starting in 1923 a 285cc engined model was introduced in England. In the US a 255cc model was introduced in 1924. In 1924 a Blackburne sidevalve 348cc engine driving through a three-speed manual transmission was introduced in England. The final English model was introduced in 1925 which differed from the 1924 model by using overhead valves.
Around 50 Ner-a-Cars are known to survive in England in 2001…
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MZ RE125 – 1964…
MZ Motorrad- und Zweiradwerk GmbH was a motorcycle manufacturer located in Zschopau,Germany. MZ an acronym, stands for Motorradwerk Zschopau (German for motorcycle factory at Zschopau) in the Erzgebirge region of Saxony. From 1992 to 1999 the company was called MuZ an acronym for Motorrad und Zweiradwerk (German for motorcycle and two-wheeler factory), latterly MZ stands for MZ Motorrad- und Zweiradwerk GmbH .
A magical bike combining meticulous attention to detail and choice of the most exclusive components with a engine designed specifically to provide a thrilling performance.
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