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Cassettes

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01 / Original postCassettesJAPANic · 30 May 2004 02 / This pagePosts 1–6Page 1 of 1 · chronological order 03 / Latest replyPost #6JeffAngell · 30 May 2004

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Cycling Equipment
Published
30 May 2004
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30 May 2004
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JAPANic
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  1. Original post
    JAPANic
    Archived post
    #1

    I know almost nothing about cassettes!!!!

    Yesterday I went hill riding and struggled. I usually only ride on the flat, and I weigh a bit more than my Japanese training buddies so going up the hills is always a little extra effort for me....

    After our ride yesterday I had a look at the other guys cassettes and most of them had a 25 on the back where as I only have a 23....

    Would it be worth my while getting a 25?

    I do lose my races on the hilly sections as well.....

    It seems pretty obvious that a 25 is going to help me a lot, but what am I going to lose at the other end of the scale?

    Can anybody point me to a good web page on the subject?
    Admittedly I haven't tried google yet... (will do so now)...

    If any of you feel like commenting on the subject.....

    😎

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  2. fushman
    Archived post
    #2

    assuming you have shimano nine speed, a 12-23 cluster gives you 12-13-14-15-16-17-19-21-23 while a 12-25 gives you a 12-13-14-15-17-19-21-23-25 so the biggest diff is the missing 16t cog. if you can live with out a 12t cog you can get a 13-25 which gives you 13-14-15-16-17-19-21-23-25

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  3. JAPANic
    Archived post
    #3

    I think I'll go and get a 25 before my next hilly race!!!

    Thanks for the quick response....

    What's with the 27????

    My wife has a TREK 1500 Women's WSD with a 25 on the back and a triple on the front.... I think she can get up Mt Fuji no problems..... (she only weighs 45kg too.....)

    Thanks again....

    This site seems to list it all as well.

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  4. serenaslu
    Archived post
    #4
    Quoted post said:

    Originally posted by JAPANic
    I think I'll go and get a 25 before my next hilly race!!!

    Thanks for the quick response....

    What's with the 27????


    My wife has a TREK 1500 Women's WSD with a 25 on the back and a triple on the front.... I think she can get up Mt Fuji no problems..... (she only weighs 45kg too.....)

    Thanks again....

    This site seems to list it all as well.

    The standard Shimano 12-27 9-speed (e.g. Ultegra) is:

    12-13-14-15-17-19-21-24-27

    The three largest cogs; and then the next two are on common carriers. The smaller 4 cogs are individually mounted. (on the 12T top gear configs.)

    see:
    http://bike.shimano.com/product_images/CS/ev_images/CS_6500_EV.pdf

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  5. DAGonabike
    Archived post
    #5

    Is there any point in changing to a cassette with a 13 top?

    I have not used my 53/12 ever in the past 500 miles.

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  6. JeffAngell
    Archived post
    #6

    Would it be worth my while getting a 25?

    I do lose my races on the hilly sections as well.....

    It seems pretty obvious that a 25 is going to help me a lot, but what am I going to lose at the other end of the scale?

    I just switched from a 12-23 (ultegra 9 speed) to a 12-27. The only loss is the 16t and the gain is the option of two easier levels for hills and passes...I'de recommend it.

    Jeff

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