1.Apparently in our video demo above the Dura-Ace jockey wheel uses 0.78w to spin at 500rpm (I guess a typical rpm for a jockey wheel?) while a ceramic one requires just 0.06w. (CC)
2.Ceramic is very rigid, think almost of your Grandma’s old bone china, in a deformation test against steel bearings the ceramic deformed by 0.55 micrometres, a steel one by well over 0.70 (my eyes aren’t good enough to tell and the important part is the difference!).
3.According to Campagnolo if you use this sort of bearing in your wheels if you were rolling along nicely at 25mph you would save around 0.8 to 1 watt. Transfer this 1 watt to an 8% incline and it’s the equivalent of removing 340g from your bike!