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Ross Millikan
Ross Millikan
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When you say two lower gears, you presumably have 25 and 27 as the largest gears in your cassette. Does that mean 39/31 would be low enough? If so, the compact with a 34 will get you there, but 34/25 will be too high. Shimano makes a 12/30 10speed cassette in the CS4600 line, which I have coupled to a 50/34 compact. You will be in for a new rear derailleur that way. They also make a 1211/32 11speed, but that needs new shifter as well. This might avoid the crankset change, however.

When you say two lower gears, you presumably have 25 and 27 as the largest gears in your cassette. Does that mean 39/31 would be low enough? If so, the compact with a 34 will get you there, but 34/25 will be too high. Shimano makes a 12/30 10speed cassette in the CS4600 line, which I have coupled to a 50/34 compact. You will be in for a new rear derailleur that way. They also make a 12/32 11speed, but that needs new shifter as well. This might avoid the crankset change, however.

When you say two lower gears, you presumably have 25 and 27 as the largest gears in your cassette. Does that mean 39/31 would be low enough? If so, the compact with a 34 will get you there, but 34/25 will be too high. Shimano makes a 12/30 10speed cassette in the CS4600 line, which I have coupled to a 50/34 compact. You will be in for a new rear derailleur that way. They also make a 11/32 11speed, but that needs new shifter as well. This might avoid the crankset change, however.

Source Link
Ross Millikan
Ross Millikan
  • 2.7k
  • 14
  • 19

When you say two lower gears, you presumably have 25 and 27 as the largest gears in your cassette. Does that mean 39/31 would be low enough? If so, the compact with a 34 will get you there, but 34/25 will be too high. Shimano makes a 12/30 10speed cassette in the CS4600 line, which I have coupled to a 50/34 compact. You will be in for a new rear derailleur that way. They also make a 12/32 11speed, but that needs new shifter as well. This might avoid the crankset change, however.