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  1. #1
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    Two set of cassettes.

    Am I a nutcase who is thinking of bringing two cassettes on a little tour. I got a fast and light roadie and was thinking about a 11-20 for flat ground and downhill and a 14-24 for the climbs. In front I have 52-42.

  2. #2
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Berodesign
    Am I a nutcase who is thinking of bringing two cassettes on a little tour. I got a fast and light roadie and was thinking about a 11-20 for flat ground and downhill and a 14-24 for the climbs. In front I have 52-42.
    Why not just use an 11-24? If you build on yourself you could have a 11-12-13-14-15-16-17-19-24 in a 9 speed. You could add an 18 for a 10 spd or split the difference between 17-24 evenly. You never know when a climb or a downhill are going to happen and stopping at the bottom of a hill to change a cassette would be kind of counter productive.

    Stuart Black

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    It makes absolutely no sense carrying two cassettes. One cassette can pretty much cover all the gear inches you're looking for. Also, if you're thinking of carrying or pulling a load, I would seriously think about changing out your chainrings.... even swapping your crankset to a triple.... that and the right cassette will give you all the range you'll ever need.
    Last edited by roadfix; 01-14-05 at 04:48 PM.
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    Ditto.
    If this is your 650c road bike Alpine tour, then you probably already know that cog combos on a 650c bike produce a different gear ratio to the same cogs on larger 700c wheels.
    Most tourists come to a point where they wish they had a lower gear. I don't know of any who pine for a larger gear. You can't descend like a pro on a closed road, there are cars and trucks to contend with and you have no paramedic following for when you crash.

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    iīve seen people bringing a backup derailleur, but never another set of cassette. go for a triple chainring, thatīs easier, more practical and less hassle. i canīt imagine someone has to change his cassette everytime he encounters a hill.

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    The problem is that I can at most have 7 speeds on this hub.

    And yeah, I am thinking of this for my alpine tour. The low geared on the ascent, and the high geared on the descent.

    And a triple crank is NOT a option. Not on this one.

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    Quote Originally Posted by Berodesign
    The problem is that I can at most have 7 speeds on this hub.

    And yeah, I am thinking of this for my alpine tour. The low geared on the ascent, and the high geared on the descent.

    And a triple crank is NOT a option. Not on this one.
    May I ask why a triple is not an option? Or how about a smaller double set? Your 7 speed cassette is not the problem here.... they are still available in both road and mtb configs.
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  8. #8
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Berodesign
    The problem is that I can at most have 7 speeds on this hub.

    And yeah, I am thinking of this for my alpine tour. The low geared on the ascent, and the high geared on the descent.

    And a triple crank is NOT a option. Not on this one.
    How about an 11-12-13-15-17-19-24 or a 12-13-14-15-17-19-24 cassette. Both give very high (>110 gear inch) high gear and the ratios are pretty tight. Go to Sheldon Brown's and you can do a calculation of the gears. If you use an inner ring of 39 or 38 you can get a better range.

    Stuart Black

  9. #9
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    If you don't want to run a triple, perhaps swap the 42 for a 39 ring? I wouldn't bother with an 11 starter cog on a cassette for a tour-but that's me.

    Check out some of Sheldon's off the shelf 7 speeds as well as the custom option. for example: 26 High 12 13 15 17 20 23 26. Sheldon has it for 29.95.

    I would go with the 13 to 26, I can keep a very healthy cadence with 13-52 (un loaded), add 15 pounds or more of stuff and I wouldn't use that much either (I run 700c though).

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    Let gravity do the downhills. Get a top gear that will keep you happy on the flats. Get a smaller small chainring, and have a large gap between the 2 biggest cogs at the back.

  11. #11
    Older I get, Better I was velonomad's Avatar
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    I just built up a 13/14/15/16/17/18/19/21/28 for myself. a 52/11 is a mighty big gear to pull even traveling lightly.

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    Years ago, I did the Canadian Rockies several times (fully loaded -- but not overloaded -- camping tours) with a 10-speed. A freewheel with 15-18-22-28-34 and chain rings of 45-40. If you've got a 7-speed cluster you'll have more gear options than I did.

    Mike
    Last edited by sakarias; 01-19-05 at 03:56 AM.

  13. #13
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    Quote Originally Posted by sakarias
    Years ago, I did the Canadian Rockies several times (fully loaded -- but not overloaded -- camping tours) with a 10-speed. A freewheel of with 15-18-22-28-34 and chain rings of 45-40. If you've got a 7-speed you'll have more gear options than I did.

    Mike
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