Trek DS 2 vs DS 3
06-23-17, 10:50 AM
#26
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Yeah, good luck with that.
06-23-17, 11:01 AM
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The DS 3 will certainly give you a lower climbing gear. The small chainring on the DS 3 is a 26 and the largest cog on the cassette is a 34. There are about a million and one ways to express "gear ratio" on a bike, but a very basic one is to divide the cassette by the chainring -- or 34/26. In this case, that number is 1.31.
The DS 2's smallest chainring is a 28, and the largest cog on the cassette is a 32. The lowest "gear ratio" on the DS 2 is 1.14. As with cars and trucks, a higher number means a "shorter" gear ratio, or one that multiplies the input torque the most. Pedaling is easiest and the speed is slowest. The DS 3 offers you a 15% easier climbing gear.
(We can directly compare the two bikes because they use the same tire diameter. If you're trying to compare effective gear ratios on bikes with different tire diameters, there are formulas that account for that.)
This is a good point -- I overlooked the difference in the chainrings. If you live where there are hills, the DS 3 would be an easier bike with which to climb.
The DS 2's smallest chainring is a 28, and the largest cog on the cassette is a 32. The lowest "gear ratio" on the DS 2 is 1.14. As with cars and trucks, a higher number means a "shorter" gear ratio, or one that multiplies the input torque the most. Pedaling is easiest and the speed is slowest. The DS 3 offers you a 15% easier climbing gear.
(We can directly compare the two bikes because they use the same tire diameter. If you're trying to compare effective gear ratios on bikes with different tire diameters, there are formulas that account for that.)
This is a good point -- I overlooked the difference in the chainrings. If you live where there are hills, the DS 3 would be an easier bike with which to climb.
06-23-17, 11:05 AM
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I use 9 speed and have no trouble getting new chains and cassettes for cheap. Going forward, I am more optimistic for the future of 9 speed than I am of 8 or 10 speed, at least for another 5 to 10 years.
06-23-17, 11:07 AM
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Which is why I'm stockpiling 10-speed cassettes...well, if you can call having 5 or 6 stockpiling.
06-23-17, 11:24 AM
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I don't have an 11-sp bike currently, but I expect that I will sooner or later, perhaps when 12-speed comes out.
06-23-17, 11:38 AM
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A few came with wheelsets I bought. A couple had 11T cog, which I didn't like, so I ended up picking up a couple more with a 12T which I currently use on my two 10-sp bikes.
I don't have an 11-sp bike currently, but I expect that I will sooner or later, perhaps when 12-speed comes out.
I don't have an 11-sp bike currently, but I expect that I will sooner or later, perhaps when 12-speed comes out.
On the mountain side of things, I figure Tourney will go to 8 speed, Altus to 9, Acera and Alivio to 10, and Deore will go to 11 speed.
09-02-19, 07:54 AM
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Update
The DS 3 will certainly give you a lower climbing gear. The small chainring on the DS 3 is a 26 and the largest cog on the cassette is a 34. There are about a million and one ways to express "gear ratio" on a bike, but a very basic one is to divide the cassette by the chainring -- or 34/26. In this case, that number is 1.31.
The DS 2's smallest chainring is a 28, and the largest cog on the cassette is a 32. The lowest "gear ratio" on the DS 2 is 1.14. As with cars and trucks, a higher number means a "shorter" gear ratio, or one that multiplies the input torque the most. Pedaling is easiest and the speed is slowest. The DS 3 offers you a 15% easier climbing gear.
(We can directly compare the two bikes because they use the same tire diameter. If you're trying to compare effective gear ratios on bikes with different tire diameters, there are formulas that account for that.)
This is a good point -- I overlooked the difference in the chainrings. If you live where there are hills, the DS 3 would be an easier bike with which to climb.
The DS 2's smallest chainring is a 28, and the largest cog on the cassette is a 32. The lowest "gear ratio" on the DS 2 is 1.14. As with cars and trucks, a higher number means a "shorter" gear ratio, or one that multiplies the input torque the most. Pedaling is easiest and the speed is slowest. The DS 3 offers you a 15% easier climbing gear.
(We can directly compare the two bikes because they use the same tire diameter. If you're trying to compare effective gear ratios on bikes with different tire diameters, there are formulas that account for that.)
This is a good point -- I overlooked the difference in the chainrings. If you live where there are hills, the DS 3 would be an easier bike with which to climb.
09-02-19, 08:04 AM
#34
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You might want to Double check DS 3 for 2020 has 2 chain rings not 3 . The gearing is slightly different from 2019
