changing gearing
- Thread starter wgf45
- Start date
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Kestevan
Last of the Summer Winos
- Location
- Holmfirth.
In a word. No.
You'd need new shifters, cranked, cassette, rear derailleur, and possibly a front mech too.
Unless the frame is something decent it probably makes more sense to buy a new bike than to upgrade...unless you can pick the bits up v. Cheaply.
You'd need new shifters, cranked, cassette, rear derailleur, and possibly a front mech too.
Unless the frame is something decent it probably makes more sense to buy a new bike than to upgrade...unless you can pick the bits up v. Cheaply.
S-Express
Guest
What's the reason for wanting to change? 10 or 11 speed is not automatically better than 9 speed - what is more important is the range of gearing you have for the kind of riding you do.
Racing roadkill
Guru
9 speed cassettes generally tend to have a smaller large sprocket than a typical 10 or 11 speed cassette. That's quite subjective though. For example, it's rare to find an 'off the shelf' 9 speed cassette with a big sprocket with more than 27 teeth, there are plenty more options with some 10 and 11 speed ( road type) cassettes having over 30 teeth on the big sprocket. So one very good argument for going to 10 or 11 speed, rather than 9 speed, is the increased flexibility / choice / range of sprocket sizes available, off the shelf. The same argument can be made for size / range / flexibility / choice of the chainrings.
In answer to the O.P. The simple answer is no you can't do what you enquired about easily, without a fair bit of component swapping and changing / modification.
S-Express
Guest
Except for the 9spd cassettes that have 30, 32, 34 or 36 teeth, obviously....
Ajax Bay
Guru
- Location
- East Devon
No. Add to the above: chain, cassette, probably the bottom bracket and maybe your rear wheel freehub may or may not be compatible with an 11sp cassette. Agree with @Kestevan - you'd be better off selling, and buying a bike close to the spec you seek. What do you think you'll gain by going from 3x9 to 2x10/11? Depending on what you wish to achieve, I'd consider just changing the triple for a double (compact): implies new chainset alone.
Ajax Bay
Guru
- Location
- East Devon
generally tend typical
9 speed cassettes are listed on this (slightly dated) Sheldon page. A better expression of the limitations of 9 speed cassettes is the apparent fetish for including an 11t smallest sprocket, which no normal cyclist needs.
But the OP presumably is not looking for a lower lowest gear as he/she would be moving from a 30t (say) smallest chainring to a 34t.
Racing roadkill
Guru
As I said it's subjective, those aren't common 'off the shelf' options on a 9 speed road cassette.
Racing roadkill
Guru
Agreed.
Ajax Bay
Guru
- Location
- East Devon
I have the Mille Pennines in a fortnight which involves a variety of v steep climbs: Harknott, Rosedale Chimney and a shed load of 1:6 - long 1:10 also rans. In an effort to get a 30t on the back I have had to buy an 11-30 cassette, but am ditching the 11t and inserting a 13t between the 12t and 14t (the 13t 'borrowed' from a 'normal 12-27 cassette with little wear). If 13t smallest sprocket cassettes with a decent size largest (ie larger than 25t) were available (not generally available: available at all), I would be a buyer. Buying a 13t outer by itself is unreasonably expensive. With 52t large chainring, a 52/13 still gives me a top gear of 108", which is plenty for general (as opposed to racing/ sportive (pretend it's a race)) cycling.
S-Express
Guest
Except they are. Road or MTB is irrelevant. They are all readily available ratios.
Cycleops
Legendary Member
- Location
- Accra, Ghana
Decathlon list two 11-32 9 sp cassettes. Even picked up one down here last week in the secondhand spares market.
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Racing roadkill
Guru
Go into a Halfords and ask for a Dura Ace 9 speed cassette with 11-32, for a road bike. Do come back and tell us how you get on. And whether they are road or MTB is relevant if you want a ( relatively ) lightweight road cassette, not a heavier ( generally speaking ) MTB cassette, but I'm sure you know that.
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Racing roadkill
Guru
Good for you. But I wasn't talking about used parts, and you won't get the latest greatest lightweight high end cassettes (Dura Ace for example) with 9 speed spacing, and a wide range, in an emergency, from a high street retailer, off the shelf.
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Racing roadkill
Guru
Very true. If you want to build your own cassette, it's no problem running 9 speeds, I prefer running 9 speeds, with a custom cassette, because the bits tend to be cheaper.
If someone wanted the latest greatest Dura Ace lightweight gear, with a wide range, and 9 speed spacing, I wouldn't fancy their chances, of being able to source it easily.
