2 ring vs 3 ring crank- Mtbr.com
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  1. #1
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    2 ring vs 3 ring crank

    what are the advantages using a 2 ring specific crank vs using a 3 ring crank w/o a large ring?

  2. #2
    YB1
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    Reduced Q-factor. simpler shifting, and slight weight reduction.
    Emory Kalahari Kruiser

  3. #3
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    Better chainline for the 2x option.

  4. #4
    No longer 26
    Reputation: G-Live's Avatar
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    my carbon truvativ stylo 3 ring crank works just fine as a 2x without the big ring.
    G
    You can't depend on honest answers from dependant hands...

  5. #5
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    Quote Originally Posted by Whambat
    Better chainline for the 2x option.
    Could you please explain this?
    Maybe I am wrong but I think that, even when you remove the big ring, the small ring (granny ring) will have the same chainlines with all cogs. Hence, the granny will not work in harmony with the large cogs.
    Thanks in advance

  6. #6
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    a triple will have 50% more chainrings.

  7. #7
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    Quote Originally Posted by ncativo
    Could you please explain this?
    Maybe I am wrong but I think that, even when you remove the big ring, the small ring (granny ring) will have the same chainlines with all cogs. Hence, the granny will not work in harmony with the large cogs.
    Thanks in advance
    Theoretically, a dedicated 2x crank (vice a 3x missing a big ring) will have the rings positioned such that both rings can access the entire spread of the rear cog.

    That is how it works on road double versus road triples.

  8. #8
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    I find the shifting on my 3x crank to be great cause i rarely use it, with a double i would have to shift alot more, or get fast enough to ride in big ring all the time

  9. #9
    ~Disc~Golf~
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    Quote Originally Posted by ncativo
    Could you please explain this?
    Maybe I am wrong but I think that, even when you remove the big ring, the small ring (granny ring) will have the same chainlines with all cogs. Hence, the granny will not work in harmony with the large cogs.
    Thanks in advance
    -a dedicated 2x will split the rings where the middle would be on a 3x.

    -HUH?
    Honestly... ahh I give up

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