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New cassette, what else will I need?

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ptizio Offline
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Posts: 3
Joined: Jul 2013
Post: #1
New cassette, what else will I need?
Post: #1New Cassette, what else will I need?
Okay so I am planning to switch my old 8 speed 12-25 cassette to a 10 speed 11-28. Im pretty sure I will either get a new chain as mine is rather worn (3 years, 1,700 miles a year roughly) or maybe just add a few links not sure.
But my question is will I need anything else to go with a new, more speed cassette? Im sitting here thinking about the shifter and cables, will all that stuff work compatibly with the new cassette?
If someone could just give me the full, in your face run down of what I'll need I'll love ya forever
Thanks in advance for any help, its all appreciated!
(just saying, its not that I couldnt go to my LBS where I got the bike and get his advice, great guy, im just a little tight for cash with grad school and if i ask him, he'll show me, I'll feel bad, buy it all at his place and then realize I could have saved a ton online, I still support him with other things)
Jul 22, 2013 07:28 PM
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RBurrelli Offline
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Posts: 184
Joined: Jul 2010
Post: #2
RE: New cassette, what else will I need?
You could be looking at changing a lot of components when moving from 8 to 10. For sure, shifters, derailleurs, chain. It could get further complicated by what your dropout spacing currently is on the rear wheel. You might not be able to fit the cassette in the space you have.

It might require new wheelset in the rear as well.

We need to know more about the bike you are planning this on.
Jul 23, 2013 06:19 AM
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nfmisso Offline
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San Jose, CA
Posts: 2,342
Joined: Jul 2010
Post: #3
RE: New cassette, what else will I need?
8 to 10 speed - no difference in the freehub - IF it is Shimano compatible. So drop out spacing is a non issue, and your present rear wheel, if it is in good shape, will be fine.

you will need:
* new 10 speed chain.
* new shifter for the rear
* new cable
* POSSIBLY a new RD
* POSSIBLY new chain rings
* POSSIBLY new right crank

The shifter is going to be your biggest expense.

You provide insufficient information to get a better answer; we need details on what you have now.

Nigel
Jul 23, 2013 09:04 AM
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ptizio Offline
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Posts: 3
Joined: Jul 2013
Post: #4
RE: New cassette, what else will I need?
Its a 2010 Trek Alpha 1.1, shimano 2300 rear derailleur (12-25)
Its been a good road bike for training and doing tours on but looking to get a little more speed outa her for less cash, who wouldnt? But thats good news about the drop out space which was my biggest concern, the new rear shifter might be more than I want to get into with this bike tho. I figured a new chain. I could do all the other things but putting on new shifters might be out of my mechanical skill level. What if I did a 9-speed? or would that just not be worth the trouble and not get more versatility outa it?. Thanks!

(Jul 23, 2013 09:04 AM)nfmisso Wrote:  8 to 10 speed - no difference in the freehub - IF it is Shimano compatible. So drop out spacing is a non issue, and your present rear wheel, if it is in good shape, will be fine.

you will need:
* new 10 speed chain.
* new shifter for the rear
* new cable
* POSSIBLY a new RD
* POSSIBLY new chain rings
* POSSIBLY new right crank

The shifter is going to be your biggest expense.

You provide insufficient information to get a better answer; we need details on what you have now.

Its a 2010 Trek Alpha 1.1, shimano 2300 rear derailleur (12-25)
Its been a good road bike for training and doing tours on but looking to get a little more speed outa her for less cash, who wouldnt? But thats good news about the drop out space which was my biggest concern, the new rear shifter might be more than I want to get into with this bike tho. I figured a new chain. I could do all the other things but putting on new shifters might be out of my mechanical skill level. What if I did a 9-speed? or would that just not be worth the trouble and not get more versatility outa it?. Thanks!


(Jul 23, 2013 06:19 AM)RBurrelli Wrote:  You could be looking at changing a lot of components when moving from 8 to 10. For sure, shifters, derailleurs, chain. It could get further complicated by what your dropout spacing currently is on the rear wheel. You might not be able to fit the cassette in the space you have.

It might require new wheelset in the rear as well.

We need to know more about the bike you are planning this on.
Jul 23, 2013 09:54 AM
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nfmisso Offline
Veteran Member

San Jose, CA
Posts: 2,342
Joined: Jul 2010
Post: #5
RE: New cassette, what else will I need?
any change in number of cogs or spacing of those cogs means a new shifter. Not hard to change; just pricey.

Nigel
Jul 23, 2013 10:42 AM
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Joe_W Offline
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Posts: 1,177
Joined: Jul 2009
Post: #6
RE: New cassette, what else will I need?
It also will not be faster... training more makes you faster. The smaller sprocket is only 1 tooth smaller plus it is already hard enough to spin a 52x12 in the flat and for mere mortals like me in fact impossible. I almost never use the 50x11 I have.

The better shift levers (105 and up) are a definite improvement though. I once tried a Sora equipped road bike (one step up from the 2300), the brake levers felt very... spongy, no well defined response. Definitely not something I would like to ride downhill at 60 km/h or faster...
Also note that mixing components over a too wide range of the group hierarchy is not recommended. If you should think about going to Tiagra shifters, you should also upgrade the dérailleurs. Especially the FDs have improved quite a bit. This will very likely exceed your planned budget.
Jul 24, 2013 12:36 AM
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