Definitely something rattling there, almost sounds like a small end rattling, but before you start getting too worried check things like your clutch, ie, has the centre nut come loose ?, could be a miriad of things, strange if it was ok when you last put her away. Oddly enough, last year, i had a rattle develop on my RS250 at a track day, convinced it was the clutch come loose, i couldn't find anything wrong till i got home and found an engine mount had come loose and the nut was just rattling away like the clappers. Just go round it and make sure nothing has come loose before you go digging too deep, hope it's not too serious. Cheers Les.
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