Aero rims
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fpugsley posted 17 weeks ago.
I use both 9sp and 10sp cassettes on my wheels. It is a difference of the spacer that goes behind the cassette.
You should be fine.
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1204 days
PJT posted 17 weeks ago.
Someone please stop me if I'm wrong...
Shimano 9-speed hubs will work fine with a Shimano 10-speed cassette as long as you remember to use the thin 1mm spacer that comes with S-10 cassettes.
Shimano Dura Ace 10 speed hubs will only work with 10 speed cassettes and do not take the spacer.
I'd say get the 9 since you can then use the wheel with both bikes.
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TriSooner posted 17 weeks ago.
I'd imagine the hubs that are on the Blackwells will take a 10sp or 9sp cassette. I don't think changing 9sp vs 10sp is any more complicated than switching from an 11X23 to a 12X25 (as long as the number of cogs matches the 9sp or 10sp rear derailleur).
Burnman, I think your ultimate question is Does the rear hub design really dictate 9 vs. 10-speed? And no, I don't think so. I think you can slide any combination of cassettes (9sp or 10sp) onto the hub as long as (which obviously know) it matches the gearing of the rear derailleur.
Cassettes, gearing, rear derailluers et all are not novice questions. "How much WD-40 should I put on my chain?" is a noob question :)
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PJT posted 17 weeks ago.
The "I'm prompted to choose between shimano 9 or 10-speed" was where I gathered we were talking about Shimano hubs.
As far as 10 speed hub/9 speed cassette compatibility, let us have a reading from the gospel according to Sheldon:
"2004 Dura-Ace (10-speed) Freehubs were completely redsigned. The Freehub body is now attached to the axle, rather than to the shell. The purpose of this was to save weight and to have the pawls act at a larger radius.
Also in an effort to save weight, the 2004 Dura-Ace Freehub body is aluminum. Aluminum Freehub bodies from various other manufacturers have been a bit dodgy, because the material doesn't hold up well against the concentrated pressure of steel sprockets. For this model hub, Shimano raised the Freehub body splines to provide more secure engagement. As a result the 2004 Dura-Ace Freehub won't fit older cassetes.
The new 10-speed cassettes, however, work fine on all 8- or 9-speed Hyperglide Freehubs. "
http://www.sheldonbrown.com/dura-ace.html
Shimano may have since addressed this compatibility issue, but it would be good to ask the seller of these wheels if the OP is leaning towards the 10 exactly what type of hubs these are.
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PJT posted 17 weeks ago.
Hey, no fair editing your response while I'm writing mine! :)
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323 days
xc800runner posted 16 weeks ago.
The Blackwell's will work with both 9 and 10 speed. You'll just need to swap cassettes depending on what drivetrain you are using. Get a chain whip and shimano lockring tool and you're good to go.
If you're easily offended by novice bike-related questions, then now's a good time to exit this topic. That said, I have a fundamental question related to 9sp vs 10sp components and rear wheels.
I have an insane deal to pick up some blackwell research aero rims, and I'm prompted to choose between shimano 9 or 10-speed. The dilemma: I ride a roadie with 9sp everything (chain, cassette/freewheel, shifters) except the rear derailleur which is 10sp (see 2007 specialized allez elite double). I'll be picking up (most likely) a Felt tri bike next season that is stocked with 10sp components. I need the blackwell rims to be compatible with both setups, so the ultimate question is 9sp or 10sp on the rear - or does it even matter?
Does the rear hub design really dictate 9 vs. 10-speed, or is it just a function of the cassette that you stick on it? If it's the latter, is it then feasible (or practical) to swap cassettes between the 9sp road bike and 10sp tri bike? I doubt that blackwell is integrating cassettes into their wheelsets.
Lots of novice questions here, so feel free to attack them in any fashion.