Big singles are easily designed wrong. It’s getting the mix of vibration absorption and power right that’s so difficult. The FT messed up completely, ending up with the same power as a 350 thumper and the same vibration, especially once some wear got into the balancer, as an old Brit single. The engine also suffers rapid top end wear and a clunky transmission. Upgrading the suspension fixes most of the handling problems.
1982-84, 499cc OHC single, 35hp, 95mph, 55mpg, 350lb