Which spacer for 9 speed casette on 11 speed wheel

[mythste]

Hello!

I have a short bike packing trip coming up where I'm trying out a bunch of different things.

In a bid to make the ride as pleasant as possible, I want to use my nice Hunt wheels that are currently running an 11 speed cassette, but I will be using 9 speed for the journey.

I'm quite comfortable swapping over, but I understand I'll need a spacer somewhere. The problem is, I can't seem to work out what sized spacer and where! Can anyone point me in the right direction?

Thanks!

 

[Sharky]

Just googled and this came up
https://www.google.co.uk/search?sxs...hUKEwi38tPjgYnrAhUiwuYKHcbcCk0Q4dUDCAw&uact=5

Might help?

 

[mythste]

Awesome. I would have thought it would be loads bigger than that so I'm glad I asked! I have a sneaking suspicion I have some knocking around that are that size, time to pester my neighbors for a vernier caliper