I’m hoping someone can shed some light or point me in the right direction regarding an issue I came across recently.
Climbing Alpe du Zwift with a friend, I was having to push roughly 0.8 w/kg more than him just to stay on his wheel.
I have calibrated my Kickr as per wahoo and Zwift and my friend is using the wattbike. He weighs 10kgs more than me but I finished the Alpe with an average power for the climb of 314w and he just 10 seconds slower averaging 288w. The maths simply don’t add up. I changed from the Tron bike half way up to see if that was the issue but the discrepancy continued with me on the Emonda with Lightweight wheels.
I noticed this issue on a different route with the same person a few weeks before but it was a rolling route so the numbers weren’t as constant and therefore I wasn’t 100% sure that it wasn’t just me suffering more than usual to keep a wheel.
Regardless of calibration, I don’t understand how one would have to push up to 1 w/kg more to maintain the same speed.
We discussed it afterwards and know that something is up but there’s no spindown available for the wattbike like the Kickr to remove that possibility from the equation even though it still doesn’t make sense that riders should move at the same speed if they are pushing the same w/kg. When I matched his w/kg my avatar dropped back straight away.