Cassette change
- Thread starter davidg
- Start date
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- Location
- the post-brexit wasteland
depends on the rear mech. a long arm one should cope fine, but a short one may not. you may also need a new chain.
accountantpete
Brexiteer
Should be ok - I have a 27/Short Cage (
) and it works fine. Does the cassette lockring work with a 11t sprocket?
) and it works fine. Does the cassette lockring work with a 11t sprocket?
andrew_s
Legendary Member
- Location
- Gloucester
It will probably be OK.
Check to see that you can actually change into 50/28 as if you can't, and you accidentally select it out on the road, you could break something. If you can't select big/big, you'll have to add another link to the chain.
The other problem is that worn chains slip on new cassettes, so if you've got a 11-28 that you just use occasionally, you could end up using it at a stage when the 12-25 and chain are worn too much. Either change chains sufficiently often that it doesn't get that worn, or keep a chain for each cassette, and swap the chain at the same time as the cassette. This is easy enough with powerlinks.
Check to see that you can actually change into 50/28 as if you can't, and you accidentally select it out on the road, you could break something. If you can't select big/big, you'll have to add another link to the chain.
The other problem is that worn chains slip on new cassettes, so if you've got a 11-28 that you just use occasionally, you could end up using it at a stage when the 12-25 and chain are worn too much. Either change chains sufficiently often that it doesn't get that worn, or keep a chain for each cassette, and swap the chain at the same time as the cassette. This is easy enough with powerlinks.
different question for my commuting bike
it is a specialized sirrus 09...
current rear deraillieur is Shimano Altus and cassette is Shimano HG-40 8 speed 11-32
Question. I mainly use the middle gearing and it is not particularly close ratio...
11 13 15 18 21 24 28 32 and never get into 28 or 32...
I need to change my chain and cassette as 1% stretch and was hoping there was a closer ratio cassette that I could put on...
I dont know how it is all affected by the rear der/lengths etc etc
could I for example get a road bike one like the Tiagra? http://www.chainreactioncycles.com/Models.aspx?ModelID=1864
or there something else that I should be looking at?
it is a specialized sirrus 09...
current rear deraillieur is Shimano Altus and cassette is Shimano HG-40 8 speed 11-32
Question. I mainly use the middle gearing and it is not particularly close ratio...
11 13 15 18 21 24 28 32 and never get into 28 or 32...
I need to change my chain and cassette as 1% stretch and was hoping there was a closer ratio cassette that I could put on...
I dont know how it is all affected by the rear der/lengths etc etc
could I for example get a road bike one like the Tiagra? http://www.chainreactioncycles.com/Models.aspx?ModelID=1864
or there something else that I should be looking at?
I am Spartacus
Über Member
- Location
- N Staffs
Short cage works fine with me up to a 28
davidg said:
you will need a special 11t lockring. 11t sprockets have a slightly smaller diameter . Your chain will ride on top of a 12t lockring from your existing cassette and not sit correctly in the sprocket teeth.
Your rear mech will probably be fine and you will not need to change your chain (unless it is worn) but you may not be able to use your large chain ring with some of the larger cassette sprockets but then you shouldn't anyway
erm why did you buy a 12-25? is that a typo
cheers
....why do you ask this?
the cassette is
http://www.evanscycles.com/products/shimano/hg50-cassette-8-speed-ec005232?query=hg50
I went for that because at the moment, I mainly use 15 18 21 24 on my commute and closer ratios between those should be better rather than feeling like I havent got the right gear
peanut said:
....why do you ask this?
the cassette is
http://www.evanscycles.com/products/shimano/hg50-cassette-8-speed-ec005232?query=hg50
I went for that because at the moment, I mainly use 15 18 21 24 on my commute and closer ratios between those should be better rather than feeling like I havent got the right gear
