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Rally xc200 power seems off

So I’ve had my rally xc200 pedals since nov 21 on my gravel bike. Outside on gravel I don’t do a lot of rides based on power but like to look back and some of the data to get a sense of how my RPE matched up with my power. 

inside I’ve had my road bike with Assiomas on them for a long time and use my elite direto. For the longest time I used powermatch in TrainerRoad with the Assiomas. At some point before a workout  I forget to charge the pedals and needed to use my direto exclusively. After that I did a couple of tests comparing the power for same workout between the direto and the Assiomas. The numbers were very close and Assiomas have a pretty good track record for accuracy. 

fast forward to the xc200s recently. So last weekend I did a long 5 hour gravel ride. Pretty steady pace. Felt pretty good and power numbers were pretty good for me for that amount of time.  So I decided the test the xc200s against my elite direto.   Put my pedals on, did a workout, and the xc200s were about 20 watts higher across the entire workout and for each interval compared the direto. Pedals were torqued appropriately. Calibrated. And angles reset. Only thing I didn’t do was calibrate the direto but that has rarely been an issue. 

is this normal? I expect some power difference but 20 watts is a lot.  Anybody else experience this? Of course I can solve this by always using the xc200s which is not a big deal but I think the 20 watt difference was a bit surprising to me. 

  • Thanks. For some reason not mobile I couldn’t find the rally forum

  • what is your leg balance with xc200? pedal with one leg against direto and probably one of the pedals measuring much more than the other. btw the frequent (in every 2weeks in season) calibration of the Direto is mandatory, only do it with the myEtraining app, compare endresult offset number with the number on the sticker (which found on Direto's leg or its bottom)

  • Thanks for the response. My leg balance is often around 52 L/48R or in that vicinity. I definitely will calibrate the direto for my ride tomorrow. I had a very long outdoor ride today where I used my pedals and a left arm stages crank. Overall the watts for the rally pedals were just 3 watts high which is more than reasonable. I have not yet analyzed how the numbers of the xc200 left pedal.  

    So I’ll see how that goes calibrating the direto tomorrow. 

  • Calibration of direto seems to have straightened things out. I did a copy p minute warmup then calibrated both the direto and the rally pedals. Rally watts were approximately 4 watts higher than the direto after that which is certainly within a reasonable range.