SFM Junak
The Junak is a Polish four-stroke motorcycle .
history
This motorcycle was produced from 1956 to 1965 in a total of 91,400 units and was shipped to the USA , Turkey , England , Italy , Finland and even Egypt , Cuba and Iranexported. There was the model M07 (approx. 11,000 units) and the successor model M10 (approx. 58,000 units). There was also a rally version M07-R and a cross version M07-C (with 5 HP more power) of the M07 model. The first M10s built between 1960 and 1961 (approx.20,000 units) still had some of the features of the M07, such as B. the housing of the front headlight. In Polish these models are also called "przejściówka", meaning "transitional models". There was also the type B20 (approx. 2500 pieces), which was a cargo tricycle. In order to also satisfy the sidecar customers, matching sidecars named WB1 and W03A (approx. 8500 pieces) were also produced.
The Junaks have won a large number of international races and have proven their suitability for everyday use and robustness. Among other things, riders with a Junak achieved gold at the international six-day race in Garmisch-Partenkirchen in 1958 , silver at the six-day race in Bad Aussee ( Austria ) in 1960 , gold at the motocross race in Buschberg (Austria) in 1961, three times silver at the six-day race in Llandrindod Wells ( Wales ) 1961 and gold in the six-day race in Garmisch-Partenkirchen in 1962 .
The motorcycle was built by SFM (Stettiner Motorrad Fabrik) in Stettin (formerly Stoewer Werke), while the engine was built by ZSM in Łódź . This motorcycle was a purely Polish in-house development and not, as is often claimed, a license for an English motorcycle. The motorcycle was designed between 1951 and 1952 in the Warsaw design office Biuro Konstrukcyjne Przemysłu Motoryzacyjnego (Design Office of the Motor Vehicle Industry ) under the direction of Jan Ignatowicz. It surpassed many a design from well-known world-famous motorcycle manufacturers of the time. This is not surprising, however, as the experienced design team was guided by the outstanding design of the Polish pre-war Sokół (falcon) motorcycles . Hence some similarities between the Junak engine and the Sokół 500 and 600 engines.
The motorcycle was very expensive for Polish standards at the time, but "better" than the two-stroke competition from Czechoslovakia and its own country. It was a very popular and reliable motorcycle that has enjoyed cult status to this day. It is often referred to as the Polish Harley-Davidson , as the background noise of the exhaust system heralds this motorcycle from afar. Ultimately, the collapse of the motorcycle market led to the final production stop in 1965.
Technical data Junak M10
Engine:
- Type: S03; Four-stroke single cylinder (OHV)
- Displacement : 349 cm³; Bore × stroke: 75 × 79 mm
- Power: 14 kW (19 PS) at 6000 rpm
- Top speed: 125 km / h
- Transmission : 4-speed
- Dry weight of the motor including gearbox: 63 kg
Chassis:
- Frame: tubular steel frame
- Wheels: 3.50 × 19 "
Electrical system:
- Alternator : direct current generator type P9a, 6 V, 45 W.
- Controller: Type RG9a, 6 V, 7.5 A
- Ignition : Magnetic ignition (identical to AWO 425 )
Dimensions:
- Length: 2172 mm
- Width (handlebar): 730 mm
- Height: 1020 mm
- Empty weight: 170 kg
- permissible total weight: 382 kg
literature
- Polish motorcycle SFM Junak . In: Motor vehicle technology 4/1960, p. 156.
Web links
Individual evidence
- ↑ Transport tricycle Junak B-20 . In: Motor vehicle technology 06/1961, p. 249.
- ↑ News from the Polish two-wheeler industry . In: Motor vehicle technology 10/1961, p. 426 and 1/1962, p. 20.