 The second-string bike ridden by Nigel Rollason and Roger Bowler circulated steadily, achieving 686 laps in the 24-hours, finishing fourth overall (including and against machines in the 'prototype' class) and winning the 500 cc Production (road-machine) class.A Mead & Tomkinson BSA B50 ridden by Phil Gurner once held the 500 cc class lap record in the 10-lap Production TT, set during the 1975 race when he finished in place 29 with co-rider Dave Savile.For 1974, Mike Tomkinson conceived a large-capacity endurance racer based on a 1000 cc Laverda 3C (as a 'test-bed' for a more-radical future build) with a modified frame to enable a lower riding position similar to the proven BSA profile, and using standard Laverda telescopic front forks.