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Compact.

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Old 09-11-06, 08:03 PM
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Compact.

Can someone explain me the real benefits of compact cranks...
thanx
Manulo (newbie)
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Old 09-11-06, 08:06 PM
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Well....

If you're not strong enough to push a "standard" sized crankset, or live in a particularly hilly area, they are great. I went to a 50/34 compact and don't regret it in the least. While I don't have huge mountains here, it is hilly enough to warrant the 34.....BUT, I like the 50T 'ring the most. It's just a great size for me, and I spend most of my time in it.

Don't worry about weight savings and all that crap. You won't notice a difference.
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Old 09-11-06, 09:28 PM
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I went from a triple to a compact because of the smooth shifting. You sort of get the gearing of a triple and the smooth shifting of a double. IMHO, that is the best thing about a compact.
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Old 09-11-06, 09:32 PM
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You get slightly smoother shifting, the 'cool look' of two rings instead of three. You also lose a bit off of your high end and a bit off of your low end.
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Old 09-11-06, 09:36 PM
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Depending on the combination you go with you generally lose your highest gear, which I rarely ever used, and you pick up a couple lower gears which can help you keep spinning on the grueling climbs. Like I said it depend on if you go with 50/34 or 50/36 and the cassette you choose (in fact if you add an 11 you actually end up with a higher gear) but generally that's the result you'll acheive. Get a gearing chart and you can tell what you'll end up with based on your selections.
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Old 09-11-06, 10:02 PM
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Originally Posted by manulos
Can someone explain me the real benefits of compact cranks...
thanx
Manulo (newbie)

They look cool as!
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Old 09-11-06, 10:36 PM
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There isn't all that much difference, considering that most compact bikes seem to come with 11-23 cassettes.

Its mostly marketing so that cyclists will "upgrade" their perfectly good cranks. Putting a 12-27 on a 53/39 gives you pretty much the same gearing as the standard compact range.
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Old 09-11-06, 10:51 PM
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Originally Posted by Phoible
There isn't all that much difference, considering that most compact bikes seem to come with 11-23 cassettes.

Its mostly marketing so that cyclists will "upgrade" their perfectly good cranks. Putting a 12-27 on a 53/39 gives you pretty much the same gearing as the standard compact range.
but putting a a 12-27 on a 50/34 will give you a WAY better range
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Old 09-12-06, 06:51 AM
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Originally Posted by djtrackie
but putting a a 12-27 on a 50/34 will give you a WAY better range
That's what we did on my wife's bike and she's been very happy with it. It avoids having to use a triple, and she uses way more of her gears than she did with the triple on her old bike.
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Old 09-12-06, 07:06 AM
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Originally Posted by Phoible
Its mostly marketing so that cyclists will "upgrade" their perfectly good cranks. Putting a 12-27 on a 53/39 gives you pretty much the same gearing as the standard compact range.
Um ... no.
Look at not only the range but also the spread of gears and on what rings you normally ride. I have far less chainring shifting now. A 50/34 w/ 11-23 is essentially the same as a 53/39 w/ 12-25 but with (to me) a more efficient layout of the gearing.
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Old 09-12-06, 07:13 AM
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To the OP,

This has been discussed, ad nauseam. I know, because I've contributed to the nauseating detail.

The search works now. Maybe you should use it.

Btw, I run a compact--a mixture of two cassettes to form a Shimano Ultegra 11 x 25. The chainrings are 50 and 34. It definitely helped me during the Civil War Century, last Saturday, spin up the mountain passes. My ride partner ran a compact as well, but he had a 12-25 cassette.

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Old 09-12-06, 07:17 AM
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This is ggg300's consolidated compact thread from a while back: Compact Crank Overload

It's got TONS of links to threads and tells you what each thread is about.

Too much thinking on this topic will drive you insane or make you an expert....
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