Chainring question.
01-01-16, 07:30 AM
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The Duke of ShartBriar
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Chainring question.
So, I have a standard 48-36-26 triple and I am having downhill speed issues. I find my bike running out of teeth when putting the pedals to the metal. Would jumping from 48 to 50 or 52 make that much of a difference ? Or am I dreaming. BTW my cassette is 11-32. I am sure if I make the jump my chain will have to be upgraded to be a bit larger. Any help is greatly appreciated, thank in advance homies !!
01-01-16, 07:46 AM
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Well, it's easy to calculate the percentage increase in gearing. A 50/48 gives you a 4.2% increase and a 52/48 gives an 8.3% increase. So if you are pedaling at 30mph in your 48T chainring, the same rpm in a 50T would give you 31.3 mph and a 52T would give you 32.5 mph.
Going from the 48T to a 52T chainring will require 2 more half-links or 1" more chain.
Going from the 48T to a 52T chainring will require 2 more half-links or 1" more chain.
01-01-16, 07:53 AM
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The Duke of ShartBriar
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Yes Thank YOU ALL !! Oddly enough I had a 29er with a smaller chainring that bombed these hills with plenty of teeth left to go. To the point of scary fast.
01-01-16, 07:57 AM
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Coasting is not how we convince those we are passing in cars to come over from the darkside. HAHHA I just like to go fast brother.
01-01-16, 09:53 AM
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That would be my choice, take a break and let gravity be your friend. Here is an article arguing against high gear ratios, for what I think are very valid reasons: Cranks, Chainrings
01-01-16, 11:30 AM
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I find it easier to go faster down the Finger lakes hills we have here in NYS by pedaling up to whatever then tucking and coasting. It's easy to hit 40-50mph on the bigger hills this way and over that on a few when the wind is just right. BTW my high gear is a 46/11 and I weigh 150lbs.
I wonder how high a cadence the OP finds to be comfy. Andy.
I wonder how high a cadence the OP finds to be comfy. Andy.
01-01-16, 11:48 AM
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I find it easier to go faster down the Finger lakes hills we have here in NYS by pedaling up to whatever then tucking and coasting. It's easy to hit 40-50mph on the bigger hills this way and over that on a few when the wind is just right. BTW my high gear is a 46/11 and I weigh 150lbs.
I wonder how high a cadence the OP finds to be comfy. Andy.
I wonder how high a cadence the OP finds to be comfy. Andy.
I'm not very familiar with triples, so not sure if a larger chainring would exceed the capacity of your front derailleur to also handle the 26 small ring.
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