In 1955, WFM designed 3 prototype scooters, all named after insects: Żuk (beetle), Bąk (bee) and Osa (wasp).
There was resistance from the authorities towards what they viewed as a "ideologically hostile" product, and pre-production models of the Osa weren't produced until February 1959.
The scooter used a 148 cc single-cylinder, two-stroke engine, designated S 06, which WFM had been supplying to SHL.
The machine used 14 inch wheels.
The machine went into full production as the Osa M50.

In 1962 the Osa M52 was introduced.
This was fitted with the 175 cc S 33 engine.
Much of the production of the M52 was exported to India.
Production of the M50 was stopped in 1963 and the M52 in 1965.
In 1955, WFM designed 3 prototype scooters, all named after insects: Żuk (beetle), Bąk (bee) and Osa (wasp). There was resistance from the authorities towards what they viewed as a "ideologically hostile" product, and pre-production models of the Osa weren't produced until February 1959. The scooter used a 148 cc single-cylinder, two-stroke engine, designated S 06, which WFM had been supplying to SHL. The machine used 14 inch wheels. The machine went into full production as the Osa M50.
In 1962 the Osa M52 was introduced. This was fitted with the 175 cc S 33 engine. Much of the production of the M52 was exported to India. Production of the M50 was stopped in 1963 and the M52 in 1965.
WFM (motorcycle)