Beschreibung:

Just as it had displaced the ageing JAP, the Jawa speedway motor eventually gave best to a more modern design, this time one from specialist engine manufacturer Weslake. Founder Harry Weslake had been a long-time proponent of the four-valves-per-cylinder layout for racing engines, and incorporated this technology into the new pushrod speedway motor. Introduced in 1975, the four-valve Weslake outclassed the two-valve Jawa, the result being wholesale switchover to the British engine and a rash of after-market four-valve conversions for the Czech engine, even Weslake climbing on the latter bandwagon. Weslake turned to manufacturing complete speedway machines in 1977 and the Rye-based firm’s dominance of the sport would not be challenged until the decade’s end and Jawa's introduction of a twin-overhead-camshaft engine, a move that would eventually force Weslake down the same road. This original and unrestored Weslake was purchased in 1990 from an Austrian Speedway rider who was retiring from racing. The machine has been on Museum display ever since and is presented in ‘as last raced’ condition.