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Going from 48T to 44T crankset - Will existing derailleur work well (not just sorta)?

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Going from 48T to 44T crankset - Will existing derailleur work well (not just sorta)?

Old 05-22-14, 05:43 PM
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GravelMN
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Going from 48T to 44T crankset - Will existing derailleur work well (not just sorta)?

I'm going from an Alivio touring triple, which is at the end of its useful life, that is 48-36-26, to a new Deore 44-32-22. I have a Deore FD but the question has come up that the cage radius of FDs can vary. Is a FD that works well with a 48T big ring going to work well (not just sorta) with a 44T ring or am I looking at purchasing a FD with a smaller radius cage? How do I find out what radius cage is already on the bike? Sorry if this is kind of newbie but I don't want to go from a bike that shifts flawlessly to one that has shifting issues.
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Old 05-22-14, 05:50 PM
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I'm guessing that your current 48 tooth big ring is on the big end of the range for your Deore front derailleur. It'll handle a 44 tooth big ring just peachy. You'll want to lower it a few millimeters on your seat tube.
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Old 05-22-14, 06:09 PM
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Recent Shimano MTB front derailleurs are designed for 42T to 44T large chainrings so your Deore should be right in its element.
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Old 05-22-14, 08:28 PM
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Great

Thanks for the advice
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