Apparatus for securing a sprocket to a sprocket carrier

A sprocket assembly, comprising:

• a sprocket carrier, the sprocket carrier defining a plurality of fixing apertures for use in securing a sprocket to the sprocket carrier,
• a sprocket, the sprocket defining a plurality of fixing apertures for use in securing the sprocket to a sprocket carrier, and
• a securing arrangement for releasably securing the sprocket to the sprocket carrier;
• wherein
• said securing arrangement comprises a plurality of fixing devices;
• each of said plurality of fixing devices comprises a bolt and a nut, the bolt having a head portion, a threaded shank portion and a knurled shank portion, the knurled shank portion disposed between the threaded shank portion and the head portion, and the nut engageable with the threaded shank portion of the bolt;
• the bolt of each of said plurality of fixing devices insertable through one of the plurality of fixing apertures of the sprocket carrier into a fitted condition in which the bolt is retained within the sprocket carrier by an interference fit between the knurled shank portion of the bolt and the sprocket carrier.