No I checked it and it's identical to the original Yamaha sprocket that was removed. Bear in mind, the Yamaha sprocket was doing this too.
I know the splines are a bit worn but would it cause that much lateral play in the fit? I'm wondering if maybe just chucking a spacer between the sprocket and the retainer to take out the lateral 'wiggle' would suffice?
So I decided to slap on a new chain and sprocket 'upgrade' on the Yibber as my old one was starting to sound a bit 'agricultural'.
The front sprocket was quite wibbly when I took it off, but the bolts were fully tight and the output shaft has no up/down movement so the bearings are fine.
Put the new sprocket on (used the old spacer) and it wobbles a fair bit still.
Made a rather tedious little video of it ... http://www.youtube.com/watch?v=DClzEvwxQj0&feature=youtu.be
Also took a photo of the bare shaft (oo-er)
It's a 2011 with only 5000-odd miles on it.
What ye think? Perfectly normal or potential fireball of doom?
Camera
GT-N7100
Focal Length
3.7mm
Aperture
f/2.6
Exposure
1/132s
ISO
80