Campagnolo 10s cassette/freehub help

[Jackoneill90]

Hi all!

I'm currently trying to fit a campag record 10s cassette to a campag 35.5mm freehub. However, I'm having issues...

Once fitted, there seems to be no axle protrusion once the lockring is on and therefore the lockring takes the pressure of the dropout resulting in the wheel not turning.

I bought the cassette 2nd hand so I am wondering whether one of the sprockets is the wrong kind or perhaps the lockring is wrong as it says '12t 13t 14t' but the smallest sprocket is 11t.
Also there are 2 sprockets with serrated inner bits which I've shown in the photos - not sure if this is normal?

I think I'm using all the right spacers in the right places as per photo 4 although there seems to be a slightly bigger space between the 12t and 11t sprockets.

Appreciate any help!!
Jack

 

[Jackoneill90]

As you'll be able to tell I'm no expert...but the more I think about it the more I believe that the 11s sprocket doesn't belong in this set...! But then it's definitely a 10s cassette made of 23, 21, 19, 17, 16, 15, 14, 13, 12 and...11. Very confused.

 

[jim haseltine]

That lock ring is for a minimum 12T outer sprocket and only the outer sprocket should have serrations, so it looks like you've got two outers there. Campagnolo sprockets have a code letter and sometimes a sub-type too which makes things most confusing especially as they aren't always marked. Outer sprockets are sub-type 1 and there's only one fitted to each cassette. The Campagnolo information states that there are two types of 12T sprocket for 10 speed cassettes, the first is with serrations for use as the outer sprocket, the second is plain and for use with a 11T outer.
Reckon you either need to source a 18T type 'C' sprocket or a 12T type A-2 and a lock ring for a 11T top sprocket.

 

[Jackoneill90]

That lock ring is for a minimum 12T outer sprocket and only the outer sprocket should have serrations, so it looks like you've got two outers there. Campagnolo sprockets have a code letter and sometimes a sub-type too which makes things most confusing especially as they aren't always marked. Outer sprockets are sub-type 1 and there's only one fitted to each cassette. The Campagnolo information states that there are two types of 12T sprocket for 10 speed cassettes, the first is with serrations for use as the outer sprocket, the second is plain and for use with a 11T outer.
Reckon you either need to source a 18T type 'C' sprocket or a 12T type A-2 and a lock ring for a 11T top sprocket.

Thank you very much indeed! Very helpful. I shall be contacting the eBay seller...

 

[Nob]

That lock ring is even stamped with 12T so how could you miss it........
You need the 11T lock ring

 

[Jackoneill90]

That lock ring is even stamped with 12T so how could you miss it........
You need the 11T lock ring

I mean...I did say I think it's the wrong lockring also as Jim says above there seems to be 2 outer rings.