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22-03.-2008, 02:50 PM
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#1 |
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Registered User
Join Date: Mar 2004
Posts: 5
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105 STI Shifters: Can I change chaingring sizes?
Howdy.
I have a standard Shimano 105 group, including STI brifters and 52-42-30. As my age in years equals the number of teeth on my large chainring  , I find I want a serious granny, like a 26. But since both front and rear shifters are indexed, I'm thinking that I'm locked into these specific chainring sizes. True?I know it's not an FD capacity issue, b/c I have another ride (but with SRAM twist shifters) where the same 105 FD handles 50-38-24 just fine. An alternative I'm also considering is a 46-36-26 touring crankset. Any hope of the 105 STI brifters working with these? Thanks. Peter. |
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23-03.-2008, 12:15 AM
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#2 | |
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Registered User
Join Date: Dec 2007
Posts: 603
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Re: 105 STI Shifters: Can I change chaingring sizes?
Quote:
As long as the relationship to the chainrings remains about the same, no problem. With the 50/38/24 works because you lowered the FD for 50t. If it was higher for a 52/38/26(4), it may not work well but a '10s' FD, made for a 52/39/30 probably would. |
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