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Crankset/BB question (X-post from MTBR)(7 posts)

Crankset/BB question (X-post from MTBR)makalu
Feb 24, 2003 9:05 AM
Hi all,

Question for you about a roadies cassette cluster in relation to crankset, cause I am not very proficient on gear ratios. I am buying a road bike this week, and it comes standard with a triple chainring. In all my road riding last year on my MTB, I never dropped into the granny. So I have negotiated to have the triple crank/BB swapped to a double crank/BB. Do you think this is a wise idea? I mean, the weight savings on a granny is negligible. DO you think I will miss the granny if I go double?

Also, if I do the swap, I don't need to swap the front derailleur do I (I think I do not).

Thanks a bunch
It dependsthe bull
Feb 24, 2003 9:28 AM
Do you live in fla. or do you live in colorado?
Good point...makalu
Feb 24, 2003 9:32 AM
I reside and ride in Northern NJ. Hilly, but nothing horrible
probably won't miss the granny_rt_
Feb 24, 2003 10:19 AM
i didn't miss mine when i switched out triple for double while living in central NC. nor have i missed it since i moved to GA (though i did long for it while doing the 6-gap century last fall.....~10,000' of climbing & i longed for a lot of things!)

the bare minimum to switch out would be bb/cranks. but you could also go with a short cage rear der if you want.

rt
go with the double you wont regret it nmthe bull
Feb 24, 2003 2:13 PM
Can't answer for you, but I know I'D miss it.retro
Feb 24, 2003 9:48 AM
If you never use the granny, chances are you won't miss it. I know that where I live (Sierra foothills) and in the condition I'm usually in, I'll never buy another bike without a triple. But plenty of people around here scoff at them, too.
There's a bit more to it than that.Spoke Wrench
Feb 24, 2003 11:13 AM
A mountain bike crankset will typically have chainrings that have 44-32 and 22 teeth. A road bike crankset is likely to have 53-42 and 30 teeth. The mountain bike will have a wider range cassette too, so the lowest available gear in the middle ring of a mountain bike will likely be lower (easier) than the equivlent gear in the small chainring of a road bike.

Will you miss the granny? Impossible for me to say. I know nothing of your cycling ambitions or fitness level, nor do I have any idea of the terrain where you live and ride. Here in St. Louis we have a mixture of dead flat floodplain and short but steep hills to ride. I advise anyone here who has the slightest doubt to get the triple.