What is the top sprocket?












1














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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    1














    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

























      1












      1








      1







      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 '18 at 0:01









      greenoldman

      6241719




      6241719






















          1 Answer
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          6














          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 '18 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 '18 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 '18 at 20:05











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          1 Answer
          1






          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          6














          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 '18 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 '18 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 '18 at 20:05
















          6














          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 '18 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 '18 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 '18 at 20:05














          6












          6








          6






          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 '18 at 0:35









          mattnz

          24k23475




          24k23475








          • 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 at 20:05


















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