Tiagra cassette, do I need a freaking spacer?

[Pikey]

Shimano freehub, 8-10 speed compatible and a tiagra 10 speed cassette.

The shimano website suggests that I will need a 1mm spacer, I have one in my tool box, but when I put it on the cassette lock ring can't reach the threads.

Without the spacer it all seems to go together fine, with a tiny bit of movement.

How do I run my wheel? Do I force the cassette with the spacer? Is this some compatibility change that I don't know about?

What will happen if I run the wheel without the spacer?

Cheers all.

 

[jack smith]

Your definatley putting the spacer on before the cassette? When I first put my spacer on the shimano locking wasn't long enough to screw in but the recon one that came with my cassette screwed in fine

 

[potsy]

Think that's the same problem I had, if you look at the back of the cassette it has some studs that seem to act as the spacer.
Mine works fine without one anyway

 

[Pikey]

Your definatley putting the spacer on before the cassette? When I first put my spacer on the shimano locking wasn't long enough to screw in but the recon one that came with my cassette screwed in fine

Lol, I'm not that much of a numpty....

Oh wait (goes and checks)....

No it's definitely next to the spokes.

 

[Pikey]

Think that's the same problem I had, if you look at the back of the cassette it has some studs that seem to act as the spacer.
Mine works fine without one anyway

Yeah, I'm wondering whether shimano have done that to the tiagra cassettes so you don't have to use a spacer.
There are no studs on the 105 cassette on my summer bike.

 

[Pikey]

Think that's the same problem I had, if you look at the back of the cassette it has some studs that seem to act as the spacer.
Mine works fine without one anyway

Yeah, I'm wondering whether shimano have done that to the tiagra cassettes so you don't have to use a spacer.
There are no studs on the 105 cassette on my summer bike.

 

[Hacienda71]

My 105 10 speed cassette had a spacer with it. My Sram cassettes don't

 

[SatNavSaysStraightOn]

don't spacers come in different widths?
just thinking out loud..

 

[jack smith]

don't spacers come in different widths?
just thinking out loud..

yes the proper spacer for making it compatible is different than the spacers that go between cogs....are you using a proper spacer for that purpose?

 

[jack smith]

don't spacers come in different widths?
just thinking out loud..

yes the proper spacer for making it compatible is different than the spacers that go between cogs....are you using a proper spacer for that purpose?

 

[Pikey]

yes the proper spacer for making it compatible is different than the spacers that go between cogs....are you using a proper spacer for that purpose?

Yeah I bought the spacer a while ago to put another 105 cassette on, defo 1mm, it's still in its packet.

 

[Pikey]

yes the proper spacer for making it compatible is different than the spacers that go between cogs....are you using a proper spacer for that purpose?

Yeah I bought the spacer a while ago to put another 105 cassette on, defo 1mm, it's still in its packet.

 

[Svendo]

The things to check are at the spoke side: The derailleur clears the wheel and spokes sufficiently when in the lowest gear (biggest sprocket), which is the purpose of the 1mm spacer (caused by the 10 speed cog size and spacing spec Shimano adopted being narrower overall than lower speed cassettes). Sram cassettes presumably have the 'spacer' built in.
At the other end the lockring needs to secure the sprockets tightly so there is no lateral play (which can happen if you omit the 1mm spacer) but also engage sufficiently to hold the cassette securely on the freehub.
I have fitted a 10 speed cassette on my now defunct American Classic wheels both with and without the spacer successfully, but other hubs may have difficulties. This was to try to overcome the notching of the Alu. freehub body. Didn't work very well BTW, the notches quickly widened. You may well need to adjust the limit screws on your derailleur as well as the cable tension.

 

[boydj]

Not all wheels will need the spacer. As long as the lockring tightens the cassette properly, you'll be fine - though you may need to adjust the indexing slightly.