Showing posts with label CZ motorcycles. Show all posts
Showing posts with label CZ motorcycles. Show all posts

7.20.2011

2011 Commie Bike Meet: Siriu, Buzău, Romania


Siriu is located in the Buzău Mountains at the Carpathians' curvature, at an altitude of about 1400 meters.
The Siriu Dam was constructed between 1982 and 1994 creating an artificial lake on the river Buzău.
 Lack of any kind of shade sucked a bit but beer will compensate for almost anything.
(some pics pulled from the forum at Motociclism.RO) 

...some basic proof that I do have a life outside of the internet ;)












I been whipped by the rain
driven by the snow
I'm drunk and dirty lord, but don't you know
that I'm still willin'.......

3.20.2011

JAWA Motorcycles: the legacy of František Janeček

Continuing with the history of some European bikes, I'll stay in the Czech Republic today and turn my attention to a machine that has been forever linked with the ČZ (see my earlier post; ČZ: A history of the Česká zbrojovka Motorcycle) : the JAWA.



Origins:

František Janeček (1878-1941) was born on 23 January 1878 in Klášter nad Dědinou, a small village in Bohemia in the present-day Czech Republic. After completing studies at the Prague Technical School and Berlin College of Engineering, Janeček returned to Prague and began working for the Jewish industrialist Emil Kolben: by the age of 23 he was appointed manager of the a new factory opened by Kolben in Holland. During the First World War he served on the Italian front, and like many engineers who survived the war he turned to designing military equipment and weapons. He quickly secured over sixty new patents, including a design for an improved hand grenade.


In 1927 Janeček purchased a former armament factory in Prague but facing a reduction in military contracts he decided to diversify his business. He had no specific experience with motorcycles -although he was familiar with mass production techniques- so he bypassed the idea of designing a new engine and began looking at several mid-range designs including the Austrian double piston, two-stroke Puch and the German Schliha two-stroke. The German motor industry was facing collapse and he quickly turned his attention to a third company, Wanderer; at that time they were building a 498cc engine, but it proved to be in direct competition with BMW and they were canceling production due to a lack of profitability.

1924 Wanderer
 Janeček first began producing Wanderer motorcycles under license in 1927. In 1929 he founded a new company, JAWA, combining the first two letters of Janeček and Wanderer. Recruiting experienced British motorcycle racer and designer George William Patchett they began plans to develop a range of competition motorcycles to promote the new Jawa brand.
The first model was introduced on October 23, 1929; a 500cc single cylinder machine with a 4-cycle, 18 hp engine, overhead valves, shaft drive and a saddle gas tank. Due to a steep price tag and a number of mechanical bugs the motorcycle received a tepid introduction, but several  improvements on the lubrication system, cylinder heads and connecting rod bearings ultimately rendered this first model relatively reliable. Still, sales never reached Janeček's expectations.

1929 JAWA 500

During the early 1930's an economic recession convinced Janeček of the need for a cheaper and simpler motorcycle. Patchett's contacts with the Villiers company resulted in a new JAWA model designed around the Villiers 175cc single cylinder, two-stroke engine. Released in 1932 this light (70 kg) machine was capable of speeds up to 80 km/h. The Jawa 175 cost only 4,250 kronen compared to 7,000 or more for comparable machines and was an immediate success in the first year of production, selling over 3000 motorcycles; in comparison the 500cc model had only sold about 1,000 in three years. By 1933 the Jawa 175 was the most popular motorcycle in Czechoslovakia and Janeček took the big 500cc bikes out of production. The Jawa 175 continued production until 1946 and some 27,535 units were built in that time.

JAWA 175
 In 1934 Jawa introduced its first car, the Jawa 700, based on a German  DKW model. The same year they came out with a 350cc sidevalve followed one year later by a 350cc OHV and their first racing bike with a 500cc SOHC engine. In 1937 the "Robot" was introduced ("robota" translates to "work" in Czech); a 98cc. two-stroke with mono-block construction, meaning that the gearbox was integrated into the engine block. This is a common design today but at that time virtually all machines had separate engines and gearboxes. Curiously, all of these pre-WWII models were only available in red.

JAWA "Robota"

 Continuing their foray into automotive production the modified Jawa 600 Minor was introduced in 1937. At a 1938 exhibition Jawa was the first company to offer test rides: the test motorcycle was a custom Jawa 175 equipped with dual handlebars to facilitate both a customer and an instructor.

 Above: Jawa 700 (left), Jawa 600 "minor" (right)

 The War Years:
Once the Germans occupied Czechoslovakia they immediately recognized the potential of the Jawa facilities, and foreseeing the inevitable Janeček raced to transfer capital into private accounts: at the same time he reportedly managed to hide large quantities of unfinished vehicles and materials from the Germans. In April 1939 the Jawa factory was forcibly converted to the production of German aircraft engines and generators.
  A fierce opponent of the Nazi regime, Janeček managed to get prototypes of  an anti-tank weapon later known as the "Littlejohn adapter" to the British via George Patchett (who later in the war invented the 9mm Sterling sub-machine gun) and by some accounts actively engaged in industrial sabotage. While his son Karel worked on the tank weapon in England, František continued secret development of a  new motorcycle  that would be reliable, simple, and comfortable. The motorcycle was actually built in a service department that was actively conducting repairs for the German army, in effect "hiding in plain sight". Code named the Perak ("to spring"), the prototype was painted army green and brazenly tested in front of an unsuspecting German security force.


JAWA "Perak"

Post WW2:
František Janeček reportedly died from lung cancer on 4 June 1941 and the Jawa company was originally taken over by his son Karel. With the Perak a foundation was laid for post-war production, and in 1946 Jawa was set to launch far ahead of any competition with their factory intact, ready access to stock and capital and a fresh design: in effect they were the first motorcycle company on the European continent to come on the market with their 249cc. one cylinder two-stroke. But the company was nationalized under the communists and Karel returned to England, later immigrating to Canada.





Communist Years:
In 1948 the socialist economic planners began merging production lines, and in the same year the first series of 350cc engines appeared in the original Perak frame. This model was first introduced as Jawa-Ogar because it was produced by a separate company, but in the same year both Ogar and ČZ Motorcycles were actually merged with Jawa.
The Jawa 350cc. had a two cylinder engine with flat pistons, reverse flow and a top speed of about 65 mph.  In 1952, Jawa released an OHC four stroke, 500cc two cylinder series of racing bikes, but development soon stopped due to production difficulties.

Jawa 350






 In 1954 the new 250cc and 350cc bikes went into production as the Jawa-Cz  Kyvacka ("swing"): lighter versions in 125cc and  175cc were also produced. But as the Soviet Union expanded production concentrated on the Jawa 354 sidecar machine which was deemed a more practical vehicle than solo models.
ESO, another Czech motorcycle factory specializing in racing machines, joined Jawa in 1964. ESO had been founded by motorcycle racer Jaroslav Simandl in Divišov in 1948; after running  the six day motorcycle race in England he began manufacturing  spare parts for J. A. Prestwich engines, popular power plants that were being used in Brough Superior, A. J. Stevens and HRD Motorcycles (forerunners of Vincent ). Demand for Simandl parts led to his own engine design in 1950, a short stroke S 45. These new motorcycles were immediately popular -they gained some degree of fame in the late sixties and the early seventies driven by racers such as Briggs, Mauger and Olsen- and became known as the Speedway motorcycles.




Following the dissolution of the union of the Czech and Slovak peoples into separate states and the dismantling of the socialist economies, the Jawa consumer motorcycles and the Speedway competition models were divided into separate companies. Jawa Speedway was privatized in 1994, and remains a relatively successful manufacturer of on and off road racing machines: Jawa itself has struggled, although there is a continuing export market. Today the company mainly produces copies of Honda 125cc and 50cc motorcycles along with a 650cc Rotax engine driven machine available in classic, street and "Dakar" designs.



References:
CZECHPOINT: Jawa, CZ, ESO and other Czech motorcycles
West Coast Motorcycles: The History of JAWA-CZ
Jawa Ireland: history of jawa
Jawa Chronology
František Janeček Biography (Czech)
Jawa Official site

3.12.2011

ČZ: A history of the Česká zbrojovka Motorcycle




Emil Ritter von Škoda (1839 – 1900) studied engineering in Prague and Karlsruhe and in 1866 became chief engineer of Waldstein-Wartenberg machine factory in Plzeň, Bohemia (now Czech Republic). In 1869 Škoda purchased the factory, already established as a primary manufacturer of heavy industrial machinery for sugar mills, breweries and other facilities. Renaming the company as Škodovy závody (Škoda Works; today Škoda Investment, a.s.) Škoda was quick to expand business, and in the 1880s founded what was then a very modern steelworks capable of delivering castings weighing dozens of tons. Steel castings and, later, forgings for larger passenger liners and warships went on to rank alongside the sugar mills as the top export branches of Škoda's factory.
In 1899, the business was transformed into a joint-stock company, and before the First World War Škoda Works became the largest arms manufacturer in Austria-Hungary, supplying heavy guns and ammunition to various world militaries: other notable exports included parts of the piping for the Niagara Falls power plant and the Suez Canal sluices. WWI brought a drop in the output of peacetime products, but huge sums were invested into expanding arms production capacities.
In September 1919, construction began on a new branch of Škoda Works, the Jihočeská zbrojovka (South Bohemian Armament Works) in Strakonice, Czechoslovakia.  The company merged with an arms manufacturing plant in Vejprty and again with a factory in Prague in 1922: the result was Česká zbrojovka (Czech Armament Works).

CZ "Kaktus"


 In  1929 the company acquired a bicycle parts manufacturing plant in Kralupy on the Vltava River, and began exports to several countries in Europe, Asia, Africa and South America: by 1932 they had begun production of a 76cc motor driven bicycle, the "Kaktus" named for its unusual cylinder shape.
In 1936 the Czech Board of National Defense decided to transfer military equipment production facilities away from national borders, and the firearms factory was relocated to Uherský Brod leaving the Strakonice complex to focus on bicycle and motorcycle lines. The Kaktus had been increased to 100cc, and by 1939 the ČZ brand had developed progressively more finished and elegant bikes, such as the 250cc "Tourist" and a 500cc twin cylinder two stroke machine. The company quickly became the biggest manufacturer of motorcycles in Czechoslovakia.



During the Second World War the factory came under German occupation and was converted to the manufacture of war materials. Like most large industrial enterprises this stock company was nationalized in 1946, and due to the post-war political situation arms production in the Strakonice plant was ended
ČZ Motorcycles was merged with its main rival Jawa by the socialist economic planners after the Communist victory in 1948.  Jawa had introduced a 250cc two stroke single with dual exhausts in 1946 which became a widespread utility motorcycle around the world, especially in countries allied to the communist bloc. A 350cc twin cylinder two stroke motorcycle was also exported around the world and sold under numerous other brand names including the Eaton's Road King.



After World War II, ČZ was the second largest motorcycle manufacturer in Europe; during this period the company experienced its greatest racing successes, competing in the 250 and 350cc classes of Grand Prix motorcycle racing. 



In 1969 ČZ produced the technically advanced "Type-860" GP model with a 350 cc V4 engine, developed by the engineer Frantisek Pudil. This advanced bike, with double overhead camshaft, 16 valves and an 8-speed gearbox  produced 63 horsepower at 16,000 rpm with a maximum speed of 240 km/h. The V-4 achieved several good results: the best being in 1971, finishing second at the Czechoslovakian Grand Prix. In 1972, the bike almost won the Austrian Grand Prix: with just few laps to go in the race the ČZ was leading when it had to retire with mechanical problems. ČZ abandoned Grand Prix road racing competitions in order to concentrate its efforts on motocross, a less expensive form of competition.



The company proved to be much more successful with motocross and became well known for its powerful two-stroke, off-road motorcycles. During the 1960s, they would become the dominant force in off-road competition, winning seven Grand Prix Motocross World Championships and dominating the International Six Day Trial.



By the 1970s, with the advent of inexpensive Japanese motorcycles, ČZ lost an increasing share of the motorcycle market. Ironically, many of the innovations successfully pioneered by ČZ, were copied by the Japanese factories. 
In 1993 the motorcycle branch of ČZ was bought by the Italian motorcycle manufacturer Cagiva, who intended to use the Czech factories to build their own brand of motorcycles as well as new ČZ and Jawa models. The venture failed in 1997 and the ČZ motorcycle brand went out of production, the company changing focus to car components along with its traditional production of chains, castings and machine tools. 

 
Today the company primarily manufactures turbofans and high lift trucks.




 References:
Photographs: Ariel / Sunstroke (CZ 175) from Breathtakers