Designed and built by Simon Cocker, the Myasishchev M-4 Bison proved a very successful PSS subject.

Spanning 93" and made from veneered white foam, the model weighed in at 7lbs.  Fitted with flaps the model could be slowed almost to the hover for a most impressive controlled approach and landing.

Simon is seen here with the Bison at the Leek and Moorland PSS event in 1987.