Old chain was somewhat knackered, which is not surprising as the bike has been used almost entirely off road, so time for a new one, plus sprockets naturally. Thought I'd try upping the front sprocket from the std. 14 T to a 16 T as it's no longer used for green lanes (we don't have many here
) Bike is actually better for it as it's dropped the rpm down to 6000 at 60 mph with no noticeable change in acceleration. Makes keeping up with in traffic less frantic.