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  1. #1
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    what is going on here?



    [Picture stolen from cyclingnews.com]
    I can see the internal-geared hub, and then there's a deraileur? I've seen bikes with a 5 spd casette and an internal hub, but this doesn't look to have any external rear gears. Any thoughts?
    Aaron

  2. #2
    we are 138 Philatio's Avatar
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    chain tension. it has a redundent pulley but I guess it saves a couple bucks from having to buy a "real" tensioner.

  3. #3
    ot.net slave
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    is it even a derailleur? I can't see that the linkage could possibly move side to side to change gears. Looks like one of the newer generation of singlespeed tensioners designed to accomodate a wide chain tension range eg on full suspension mountain bikes.

    I need one of those computers all the top crime fighting labs have. "enhance" "zoom" "enhance"

    - Joel

  4. #4
    we are 138 Philatio's Avatar
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    Quote Originally Posted by tomacropod
    is it even a derailleur? I can't see that the linkage could possibly move side to side to change gears. Looks like one of the newer generation of singlespeed tensioners designed to accomodate a wide chain tension range eg on full suspension mountain bikes.

    I need one of those computers all the top crime fighting labs have. "enhance" "zoom" "enhance"

    - Joel
    good point. I didn't even look that closely and just saw the two pulleys.

  5. #5
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Quote Originally Posted by tomacropod
    is it even a derailleur? I can't see that the linkage could possibly move side to side to change gears. Looks like one of the newer generation of singlespeed tensioners designed to accomodate a wide chain tension range eg on full suspension mountain bikes.

    I need one of those computers all the top crime fighting labs have. "enhance" "zoom" "enhance"

    - Joel

    irfanview.com

    No lateral movement, just a tensioner.

  6. #6
    Senior Member fender1's Avatar
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    It is a new bianchi w/ a new Shimano nexus 8 with a rear disc brake. I beleive the tensioner is on there becuase there is no eccentric bottom bracket and it allows the abiltiy to adjust the rear wheel.

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