10 speed with 9 speed crankset
My plan is to get a right hand 10 speed shifter, shadow+ rear mech, cassette and chain. Plus put a 24 tooth inner chainring.
Will fitting a 24 tooth chainring to a 9 speed crankset work? or will it mess up the tolerances and ramp position?
Also with a 24 tooth inner on the front and a 11-32 cassete, will I get away with a medium cage rather than a long one?Posted 5 years ago
I certainly don’t want to go to 11-36, I prefer closer ratios.
For the medium cage, it doesn’t matter if its a bit tight, I am unlikely to be going large chainring to large cog very often, only when I am absolutely knackered and my brain isn’t working, but those times do happen and I want to be sure I don’t snap the chain.Posted 5 years ago
I may go to an ultrega 12-30 as well later in the year with a couple of months of long rides under my belt.
The advantage of the 24 tooth inner is in not having to drop down a cog or two on the cassette when going to the granny ring at the front. That is something that really bugs me, and screws up my momentum.Posted 5 years agondthorntonMember
I just changed to 10 speed so I could get a clutch rear mech – keeping my 9 speed xt crankset. I changed the chain rings as they were quite worn. The problem is I wanted 22, 34, bash. But Shimano dont do these options in 10 speed – the smallest ring you can get is 26 – bit of an oversight I feel, certainly no good for the Malvern Hills where I live. I thought about buying new 9 speed shimano chainrings but they are not recommended for 10 speed drives.
So in the end I bought Blackspire rings as they come in the right sizes and are rated for 9 or 10 speed. They are also quite cheap on CRC
I may be being a little naive here – perhaps Shimano are more diligent with their tolerances whereas Blackspire just decided to add “and 10sp” to the description of their old rings. After all – how can one ring be ideal for 2 different drives? (One ring to rule them all…..) so you would probably be OK with Shimano 9sp – but not optimal. But Blackspire do come in pretty colours 🙂Posted 5 years ago
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