What is the top sprocket?











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I am reading the Shimano specs and I cannot figure out what is the "top sprocket". An example: https://bike.shimano.com/en-EU/product/component/sora-r3000/RD-R3000-SS.html



"Low sprocket" (I couldn' tell what it is, but the value is more meaningful) describes the rear sprocket, ok, "Total capacity" this I understand as well, but what is "Top sprocket" with min/max values 11/14T (accordingly)?










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    up vote
    1
    down vote

    favorite












    I am reading the Shimano specs and I cannot figure out what is the "top sprocket". An example: https://bike.shimano.com/en-EU/product/component/sora-r3000/RD-R3000-SS.html



    "Low sprocket" (I couldn' tell what it is, but the value is more meaningful) describes the rear sprocket, ok, "Total capacity" this I understand as well, but what is "Top sprocket" with min/max values 11/14T (accordingly)?










    share|improve this question
























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I am reading the Shimano specs and I cannot figure out what is the "top sprocket". An example: https://bike.shimano.com/en-EU/product/component/sora-r3000/RD-R3000-SS.html



      "Low sprocket" (I couldn' tell what it is, but the value is more meaningful) describes the rear sprocket, ok, "Total capacity" this I understand as well, but what is "Top sprocket" with min/max values 11/14T (accordingly)?










      share|improve this question













      I am reading the Shimano specs and I cannot figure out what is the "top sprocket". An example: https://bike.shimano.com/en-EU/product/component/sora-r3000/RD-R3000-SS.html



      "Low sprocket" (I couldn' tell what it is, but the value is more meaningful) describes the rear sprocket, ok, "Total capacity" this I understand as well, but what is "Top sprocket" with min/max values 11/14T (accordingly)?







      derailleur sprocket






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      asked Nov 23 at 0:01









      greenoldman

      6171719




      6171719






















          1 Answer
          1






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          up vote
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          down vote



          accepted










          In that context, Top sprocket is the smallest one on the cassette, which gives you the Top or highest gear. (You would think they would match terms Low and High or Top and Bottom.)






          share|improve this answer

















          • 2




            Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
            – Criggie
            Nov 23 at 2:45










          • @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
            – Carel
            Nov 23 at 18:49










          • @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
            – Criggie
            Nov 23 at 20:05











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          1 Answer
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          active

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          1 Answer
          1






          active

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          active

          oldest

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          active

          oldest

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          up vote
          6
          down vote



          accepted










          In that context, Top sprocket is the smallest one on the cassette, which gives you the Top or highest gear. (You would think they would match terms Low and High or Top and Bottom.)






          share|improve this answer

















          • 2




            Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
            – Criggie
            Nov 23 at 2:45










          • @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
            – Carel
            Nov 23 at 18:49










          • @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
            – Criggie
            Nov 23 at 20:05















          up vote
          6
          down vote



          accepted










          In that context, Top sprocket is the smallest one on the cassette, which gives you the Top or highest gear. (You would think they would match terms Low and High or Top and Bottom.)






          share|improve this answer

















          • 2




            Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
            – Criggie
            Nov 23 at 2:45










          • @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
            – Carel
            Nov 23 at 18:49










          • @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
            – Criggie
            Nov 23 at 20:05













          up vote
          6
          down vote



          accepted







          up vote
          6
          down vote



          accepted






          In that context, Top sprocket is the smallest one on the cassette, which gives you the Top or highest gear. (You would think they would match terms Low and High or Top and Bottom.)






          share|improve this answer












          In that context, Top sprocket is the smallest one on the cassette, which gives you the Top or highest gear. (You would think they would match terms Low and High or Top and Bottom.)







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 23 at 0:35









          mattnz

          23.9k23375




          23.9k23375








          • 2




            Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
            – Criggie
            Nov 23 at 2:45










          • @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
            – Carel
            Nov 23 at 18:49










          • @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
            – Criggie
            Nov 23 at 20:05














          • 2




            Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
            – Criggie
            Nov 23 at 2:45










          • @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
            – Carel
            Nov 23 at 18:49










          • @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
            – Criggie
            Nov 23 at 20:05








          2




          2




          Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
          – Criggie
          Nov 23 at 2:45




          Specifically, the smallest cog on the cassette is to be from 11 to 14 tooth. You can't have a smallest cog outside that range. There's a similar restriction on "Low sprocket" being from 25T to 32T.
          – Criggie
          Nov 23 at 2:45












          @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
          – Carel
          Nov 23 at 18:49




          @Criggie: Well not entirely true, I have a Shimano road cassette that ranges from 11 to 34. And there are single front ring set-ups that have 11-36 cassettes, i've even read about cassettes starting at 9 theeth.
          – Carel
          Nov 23 at 18:49












          @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
          – Criggie
          Nov 23 at 20:05




          @Carel yes, but this is Shimano's published specification for this derailleur. They're notoriously cautious on the limits, and you can often push 2-4 teeth larger at the big end of the cassette, but less so at the bottom.
          – Criggie
          Nov 23 at 20:05


















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