I’m trying to move my 9 speed Tiagra cassette to my Neuvation powertap wheel, and it seems that the hub part where the sprockets slide on to is shorter on the Neuvation than it is on my Shimano R500 wheels. The first 8 go on no problem, but when I put on the 9th and try to fasten the locknut, the locknut doesn’t catch. The same cassette installs fine on another R500 wheel (a different one than the one it was installed on before, one that actually held a 10 speed 105 before), and I installed a 10 speed 105 cassette on the Neuvation wheel without issues. I now have it installed as an 8 speed, which is fine for my immediate purpose (trainer), but I would like to know WTF is going on.
Sheldon Brown (or his spirit) claims that 9- and 10-speed hubs are interchangeable.
Help?
Some hubs are 10 speed specific…a 10 speed cassette is narrower than a 9 speed so it may be that your hub is a 10 speed specific hub.
Some hubs are 10 speed specific…a 10 speed cassette is narrower than a 9 speed so it may be that your hub is a 10 speed specific hub.
Really? Not that I don’t believe you but that’s two headscratchers in one sentence. First one is that a cassette with more sprockets is narrower (possible, will go out to confirm after I press submit here) and the second is that wheelmakers would make wheels incompatible with part of the market without a compelling reason.
Yeah when you put a 10 speed cassette on a 9/10 speed cassette body, you put a spacer (I think its .5 mm or so) behind the cassette. However, some manufacturers made cassette bodies that dont reguire the spacer making it a 10 speed specific cassette body.
Some hubs are 10 speed specific…a 10 speed cassette is narrower than a 9 speed so it may be that your hub is a 10 speed specific hub.
Really? Not that I don’t believe you but that’s two headscratchers in one sentence. First one is that a cassette with more sprockets is narrower (possible, will go out to confirm after I press submit here) and the second is that wheelmakers would make wheels incompatible with part of the market without a compelling reason.
Sheldon Brown claims that a 10-speed Shimano cassette is 0.7mm wider than a 9-speed one: http://sheldonbrown.com/cribsheet-spacing.html
Yeah when you put a 10 speed cassette on a 9/10 speed cassette body, you put a spacer (I think its .5 mm or so) behind the cassette. However, some manufacturers made cassette bodies that dont reguire the spacer making it a 10 speed specific cassette body.
Pardon my ignorance but what do you mean by ‘cassette body’? The part of the hub you slide the cassette on to?
make sure there is no spacer on the bottom of your casette, sometimes there is one kinda stuck there.
if not, make sure its pushed down all the way and no grit is making it wider than it should be.
very few hubs are 10speed only.
and yes the 9 speed cassette is wider than the 10
Yes, the cassette body is the part of the hub the cassette slides onto
.
OK gents, thanks for the info. Will go and clean the hub and cassette (again), and see if the Neuvation website mentions anything.
Some hubs are 10 speed specific…a 10 speed cassette is narrower than a 9 speed so it may be that your hub is a 10 speed specific hub.
Really? Not that I don’t believe you but that’s two headscratchers in one sentence. First one is that a cassette with more sprockets is narrower (possible, will go out to confirm after I press submit here) and the second is that wheelmakers would make wheels incompatible with part of the market without a compelling reason.
i was under the impression that this was correct. on a normal 8/9/10-speed hub, you need a spacer for a 10-speed cassette. it’s possible that the overall big cog to small cog width is slightly wider for 10 speed, which may be the measurement sheldon brown is giving, but where the cassette actually contacts the freehub, i think 10 speed is narrower. that’s why you need the spacer.
and 10-speed-specific hubs do exist, but the only wheels i’m aware of that use them are some of the shimano dura-ace hubs.
Crap. I misread the title as “Stupid Wench Question”. I was hoping for a completely different discussion with some possible pix. Now, I just have to wallow in my sub-par literacy skills. Sorry for the interruption. Carry on.
Its really the PT website you need, Neuvation just buys the hubs. I’ve put 8/9/ and 10 speed cassettes on PT hubs. Some lock rings just barely catch, I’ve taken the thin metal washer off some shimano lockrings to make it easier.
When you put the ninth cog on does it catch on the splines, If so try removing the washer after making sure their isn’t a spacer stuck on either the casette body or cogset.
A true shimano 10 speed only hub wont let 9 speed cogs even slide on,
Its really the PT website you need, Neuvation just buys the hubs. I’ve put 8/9/ and 10 speed cassettes on PT hubs. Some lock rings just barely catch, I’ve taken the thin metal washer off some shimano lockrings to make it easier.
When you put the ninth cog on does it catch on the splines, If so try removing the washer after making sure their isn’t a spacer stuck on either the casette body or cogset.
A true shimano 10 speed only hub wont let 9 speed cogs even slide on,
Thanks. Got it. There was in fact a grimy black spacer stuck to the cassette body. After removing that it worked fine. Fun fact: the PT hub needs that spacer for a 10sp, but when you put it on a shimano hub it doesn’t fit. Oh well.
And yeah, the fact that the cassette body is pt instead of Neuvation is in the ‘Doh’ category. 