Veel miskit komponentidest ja käikudest. Mõned mehed võtsid mägesid MTB esihammakatega

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The pro teams ride either Dura Ace or Record drivetrains. As such, they really don't have a choice as to the number of speeds the particular system offers. The Postal team and others were using the new 10 speed Dura Ace, which will be available to the public in September.
Actually, Lance with his high cadence uses a 39x25 to "spin" up the hills; in contrast to Jan Ullrich who powers up the same hill, probably in something like a 39x23. For really steep mtns, like those found in the Giro and Vuelta, cyclingnews has a report, with pictures, showing many of the racers using double cranks, including the winner Gilberto Simoni, using as low as 38x30 or 39x28. Why not use a triple? Some pros have done so. But the main reason is gearing. Racers want the closer gearing offered by a double.
You may have noticed on occasion that LA operates his front derailleur with a downtube shifter on the "climbing bike", so they are certainly fanatical gram counters.
Sometimes they even go to a 27. There's a lot of gear choices out there and riders will go with what works best for them. They also don't always use 130 BCD cranks. Sometimes they use 110's which allow them to go as low as 34 on the front with a double. Tyler Hamilton reportedly used a 36 in front this year for certain climbing stages with an FSA 110 BCD double crank.