Suntour Cassette question

shmoo

Dirt Disciple
Hi,

I've got a Suntour XC Pro rear hub and am struggling to find a 7 speed cassette for it. Does anyone know if a Suntour 8 speed cassette will fit or will it be too wide (like Shimanos are)?

Any help appreciated.

cheers
 
Re:

It will not, and to further complicate matters not all 7 speed will work either as there was MD and non-MD variations. Essentially there are several freehub body lengths, and cassettes were designed so that 7 speed had a single sprocket lock ring and 8 speed had a double sprocket lock ring.

Cassette spline lengths:
6 speed = 23.7mm
7 speed = 26.1mm
8 speed = 30.8mm

Non MD lengths:
7 speed MD = 20.7mm
8 speed MD = 25.4mm

STXCProHubs.jpg


*stolen from the internet somewhere
 
Thanks very much for your help.

I suspected that to be the case, never mind will keep hunting for 7 speed MD cassette
 
The freehub bodies are interchangeable so if you can find one and a cassette you could put on a normal 7s body and cassette.

Carl
 
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