Cassette Installation Question

[Buccafresh]

I had a question about reinstalling the rear cassette on my road bike after deep cleaning it in degreaser.

When I removed the cassette I noticed something also bounced on the floor and by making a metal "ping" sound. I noticed what looked like a metal spacer on the ground nearby it measures 1.75-1.85 mm thick. (Pictured on the left below.)

   

I didn't see where this spacer was prior to removal, so I am not certain how to reinstall it. Am I correct that it should sit behind the rear cassette and go on freehub first?

   

Please let me know if I reinstalled my cassette correctly by putting the spacer on first.


I also noticed this spacer also went on more than just "one way" unlike the rest of the cassette. I am guessing that is okay due to it just being a spacer.


Thanks for your time!

[Joe_W]

Check if there is one missing between the sprockets, normally a 9 speed (did I count correctly?) cassette doesn't need one. Except on 11spd hubs, I believe. But quite likely you are right.

[Buccafresh]

(07-30-2019, 07:26 AM)Joe_W Wrote:  Check if there is one missing between the sprockets, normally a 9 speed (did I count correctly?) cassette doesn't need one. Except on 11spd hubs, I believe. But quite likely you are right.

Thank you, yes you did count correctly with the 9 speeds. I am guessing it is an 11-speed hub as the manufacturer makes this bike with an 18, 20, and 22-speed variants respectively, they probably all use an 11-speed hub and add spacers for 10 and 9-speed cassettes. Thanks again!

[Joe_W]

(07-31-2019, 01:58 AM)Buccafresh Wrote:  

(07-30-2019, 07:26 AM)Joe_W Wrote:  Check if there is one missing between the sprockets, normally a 9 speed (did I count correctly?) cassette doesn't need one. Except on 11spd hubs, I believe. But quite likely you are right.

Thank you, yes you did count correctly with the 9 speeds. I am guessing it is an 11-speed hub as the manufacturer makes this bike with an 18, 20, and 22-speed variants respectively, they probably all use an 11-speed hub and add spacers for 10 and 9-speed cassettes. Thanks again!

That explains it... I'm stuck in the past with my (current) hubs, so I have yet to encounter them. One rule about bike fixing (ok, for me) is to just try stuff. Unless you use excessive force most things don't break... Sometimes you have to start from square one again, though.