Whats the deal with the latest road cassettes?
I've got a 105 one and it looks as though its got fewer, but deeper splines? Should i be using it on a special freehub? When did this change?
Its on an MTB hub at the moment with a alu freehub. i thought getting a mid-range one would mean enough of the sprockets would be on a carrier for it not to bite in to the freehub but i was wrong. its well and truly dug in.
guess i need a steel freehub, since i can't find an alu one with the deeper splines.
Some 10 speed road stuff is like that, I thought it needed a spacer too.
When Shimano went to 10 speed they made freehubs out of alu to save weight. The (10 spd) cassettes have the same pattern splines but are deeper / taller so won't fit on older freehubs.
Shim did go back to the 'original' pattern a while back for a number of groupsets; - D/A 7850 wheels have more durable freehubs for example.
The cassette does fit since the splines that exist are in the same place. They just dig in because theres less of them.
I found this which kind of explains it
http://forum.ctc.org.uk/viewtopic.php?f=5&t=19922&start=0
so many different standards!
Deeper splines don't dig into the freehub body, which allows alu freehub bodies without the associated faff with cassette removal. Early 10 speed road hubs/cassettes used deeper splines, but that meant you couldn't fit 9 speed cassettes onto 10 speed hubs. The cassettes were reverse compatible - there was just a bit of a gap at the top of the splines.
They gave up on it, as everyone moaned about the reverse incompatibility of Shimano wheels, shame really, it made sense!
Yes it makes sense to you Njee, cos you get given stuffs to use but what about us paupers what can barely afford Deore?
It annoys me that you can no longer get decent quality 8-speed stuffs, and that'll probbly be true of 9-speed stuffs soon.
I'm going to be forced to rob XC Whipetty types what ride nice Treks soon, if this carries on... 
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