Several of the big dogs on the DH World Cup scene have been using power meters this season to help put a little more science back into racing and training. You may recall Danny Hart, Andrew Neethling, and Aaron Gwin with them, among others. The data provided gives a clear picture of a rider's power output at any given time. This can be useful when comparing runs or to track progress during the off season. The SRM system isn't cheap, though, with prices ranging from $2000 to $3500 for complete kits. Part of the high cost is the need to machine some cranks to interface with the system. SRM is also working with Freelap to develop a combined timing/power meter tool.
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