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  1. #1
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    Has anyone seen this crankset before?

    http://lancearmstrong.com/lance/online2.nsf/html/alg04
    Check out this pic of Lance in Portugal...I've heard of a power crank type system for training...is that what this is?

  2. #2
    Not-so-Senior Member
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    Yup, SRM Powercranks they're called. Looks like Lance has got the hang of them. They use two little clutches inside the arm/BB so that each arm is independant but both turn the chainring. You have to pedal both legs in perfect circles or you go nowhere fast. Try riding with one leg next time you're out, it's not as easy as it seems.

  3. #3
    Senior Member djbowen1's Avatar
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    i thought they were powertap to record data.

  4. #4
    Junior Member
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    Yes, SRM cranks are a power meter set up, just like regular cranks, but they yeild power output (watts) data. The independently rotating cranks are called PowerCranks. Lance is riding an SRM crankset in the photo.

  5. #5
    Senior Member djbowen1's Avatar
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    i thought so.

  6. #6
    Work hard, Play hard forum*rider's Avatar
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    is their any advantage to these cranks?

  7. #7
    Senior Member djbowen1's Avatar
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    no there is NO advantage, they are a training aid.

  8. #8
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    Thanks everyone for the info...

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