The speedo on my 2001 r1 started playing up (sometimes worked, sometimes didn't),andnow it doesn't work at all, it just stays on 0,........ any ideas

Just had the same problem. first of all, undo your speedo cable to see if it's snapped. If so, replace it. But also, you should jack the front of your bike up, take the wheel off and make sure the speedo drive hasn't seized. If it has, then spray the hell out of it with WD40 and try working it round with a flat ended screwdriver. There aren't any parts you can break, but when you put the speedo drive back in, make sure the metal lugs are in the holes. Hope this helps!