Hello All,

Quick question here regarding rear Talon sprocket on a TY250E rear hub. I ordered up a Talon 44 tooth dished sprocket (520 chain) with a reference number of 228. The sprocket seems all ok apart from the bolt holes don't align correctly. The pitch circle diameter of the hub is 80mm but the sprocket is 81mm. The bolt holes are all slightly out of alignment by enough to prevent the threads engaging. The rear hub is stamped 43401, does this mean it is a TY250A part? Was there a difference between the hubs on A and the later models? Anyone come across this before? or have I got a bad sprocket?

Cheers

Rich

Back in the days when I rode a Yamaha I had this very problem with a Talon sprocket. (the screws would just go in but didn't line up in the centre of the countersink) I remember speaking to Talon about it but don't recall what was done! It was nearly 20 years ago.

Give them a ring and explain the problem.

Hi Steve,

Thanks for the reply, phoned Talon this morning and they do drill the 288 sprocket to 81 mm bolt centre diameter. My hub is definately 80 mm though. The guy at Talon said they could drill another set of holes at 80 mm BCD in between the original holes at 81mm. Looks like that is the answer for me. Can't believe this is a one off though.

Cheers

Rich