Cda mode is a smart resistance mode that uses your road speed to decide how many watts of extra resistance to apply. The faster you ride the more resistance the AIRhub applies. If you start to slow down because of a hill the AIRhub will sense this and back off the resistance until your speed has picked up again. This makes sure that you are maintaining adequate power on the flats and not overworking and getting dropped on the hills.

How much resistance is the AIRhub applying? Use the following table to work out how much resistance you need at each speed. Pick a CdA for your ride and keep your phone in your pocket.

We don’t recommend adding max resistance to your ride every time. For general training choose a setting which will increase your riding power but not push you into the red. The biggest gains are going to come over a period of a few weeks. If you push too hard at the start you will fatigue quickly and not get the best adaptations. To build up training; slow and steady wins the race.