Hi,
I am using a polar power output on both a carbon road bike, and on an aluminum CX bike with slick tires;
The road bike setup is full dura ace 10 spd with Ksyrium SSC SL wheels while the CX (using slick tires for this purpose) setup is: 9 speeds, XT or Ultegra cassette, ATR rear der. crank-brothers egg beater pedals (using shimano mtb shous);
I use this power system rotationally on these 2 bikes and C o n s i s t e n t l y I get higher power readings on the road bike (like when trying to go for power max, or 30sec highest avg.)
Any idea what can be the reason for that difference? I thought that naybe the diference between the KEO carbon and the Eggs/heavier shoes may contribute, and maybe the drivetrain on the cx is not as efficient as the 10spd D/A..
Will be happy to get an explanation to that. Thanks.