I was out on my 2002 cbr600f last week, I had been on the bike for literally about 3 minutes, stopped at a roundabout to give way to traffic so clutch was in, 1st gear engaged and I could feel a knocking through the handlebars at roughly half second intervals, pulled away and everything seemed fine and it has not happened since. There has been no knocking feeling under braking or anything like that. The bike has got about 31,000 miles on the clock, could this be a clutch problem? any advice would be great.

Cheers