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Has anyone seen this crankset before?

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Has anyone seen this crankset before?

Old 02-19-04, 01:44 PM
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flybikeman
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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?
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Old 02-19-04, 06:45 PM
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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.
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Old 02-19-04, 06:56 PM
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i thought they were powertap to record data.
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Old 02-19-04, 07:16 PM
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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.
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Old 02-19-04, 07:17 PM
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i thought so.
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Old 02-19-04, 08:48 PM
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is their any advantage to these cranks?
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Old 02-19-04, 08:51 PM
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no there is NO advantage, they are a training aid.
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Old 02-20-04, 09:20 AM
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Thanks everyone for the info...
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