Fitting 9 speed cassette to 8 speed hub

Nottstom

Hi, I was given a used SRAM 9 speed 11-32 cassette a while back and figured I'd upgrade from 24 to 27 speed, I have sourced 9 speed shifters (rear mech and front chainwheels are 9 speed compatable already) and I've bought a new 9 speed chain. I put everything on ready to install the replacement cassette & then just adjust to suit. Here's the but, I've got the 8 speed cassette off but when I try putting the 9 speed on it apppears to be too wide, the smallest cog doesn't appear to even reach on to the splines of the hub & there is no chance of getting the locking ring on. Any suggestions of what I'm doing wrong? Am I correct in thinking that the 9 speed cassettte should fit in place of the 8 speed? Any idea what the total width of the cassette should be? Any help would be appreciated as I'm due to do a charity bike ride in a week or so.

nicklouse

8spd and 9spd cassettes are the same width.

have you left something on the hub?

Nottstom

Thanks for the reply, I can't see anything that I've left on the hub, I'll check the width of the 8 and 9 speed cassettes to compare them, I'm starting to wonder whether the 9 speed cassette is actually a set or whether there are any 8 speed cogs in there which are wider.

nicklouse

could be.

pics of the parts?

which Sram cassette is it?

diy

you might have the 11t gear on the wrong way around. It always looks backwards when you put it on correctly.