Junak WB1
| Manufacturer | Junak |
|---|---|
| Production | 1959 |
| Class | Classic |
| Engine | Four stroke, single cylinder, OHV, air-cooled |
| Bore / Stroke | 76.2mm x 76.2mm |
| Compression ratio | 7.0:1 |
| Horse Power | 19.04 HP (14.2 KW) @ 6000RPM |
| Torque | 19.92 ft/lbs (27.0 Nm) @ 3800RPM |
| Fuel system | Carburetor |
| Transmission | Gear box: 4-Speed Final Drive: Chain |
| Suspension | Front: Fork with coil springs telescopic shock absorbers Rear: ndependent rear wheel suspension on single wishbone, cooperating with 7- leaf spring positioned transversely |
| Brakes | Front: Full hub width, of expander shoe type, hand operated Rear: Full hub width, of expander shoe type, foot operated |
| Wheelbase | 79.09 inches (2009 mm) |
| Dimensions | L 86.42 inches (2195 mm) W 58.7 inches (1491 mm) |
| Seat height | 29.69 inches (754 mm) |
| Weight | (dry), 327.0 kg (wet) |
| Manuals | Service Manual |
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The Junak WB1 was a Four stroke, single cylinder, OHV, air-cooled Classic motorcycle produced by Junak in 1959. Max torque was 19.92 ft/lbs (27.0 Nm) @ 3800 RPM. Claimed horsepower was 19.04 HP (14.2 KW) @ 6000 RPM.
Engine
A 76.2mm bore x 76.2mm stroke result in a displacement of just 349.0 cubic centimeters.
Drive
The bike has a 4-Speed transmission. Power was moderated via the Wet Multi-plate.
Chassis
Stopping was achieved via Full hub width, of expander shoe type, hand operated in the front and a Full hub width, of expander shoe type, foot operated in the rear. The front suspension was a Fork with coil springs telescopic shock absorbers while the rear was equipped with a ndependent rear wheel suspension on single wishbone, cooperating with 7- leaf spring positioned transversely. The wheelbase was 79.09 inches (2009 mm) long.
1959 - 1965 Junak WB1
Szczecin Motorcycle Factory developed and started to produce in 1959 a M07 with passenger side loader , branded as the WB1 and was later followed by the WB3. In essence these two motorcycles are the same - the WB1 is based on the M07 and the WB2 on the later model M10.