How fluid resistance works

Kinetic fluid bike trainers create resistance by turning a blade inside a container of fluid. This resistance is progressive and increases as wheel speed increases.

Kinetic fluid trainers provide a realistic replication of the resistance a rider experiences outdoors. Progressive resistance works like this: ride in an easy gear and spin if you don’t want to work too hard or if you do want a hard workout, shift gears and pedal harder and resistance increases. Resistance increases or decreases with wheel speed. Doing an interval workout? Change gears and pick up the tempo—resistance increases exactly as it does on the road. There’s no need to turn a dial on the trainer to go harder.

Kinetic fluid smart trainers, equipped with a Kinetic inRide Power Sensor, allow accurate and consistent measurement of power based on wheel speed. Learn more about Kinetic Power here.

Kinetic trainers are precisely calibrated and tuned to provide exactly the same amount of resistance every workout, from start to finish. Kinetic uses a thermodynamically neutral medical grade silicone fluid in our trainers because it provides consistent, repeatable workloads and is not affected by temperature.

bike trainer-fluid resistance graph.jpg
bike trainer fluid resistance infographic.jpg

Kinetic fluid trainers feature an engineering breakthrough - our patented magnetic drive system for a lifetime of leak-proof performance. With other fluid trainers, the drive shaft enters the fluid chamber. This spinning drive shaft is the weak point of the unit. Our magnetic drive system uses two sets of powerful magnets on either side of a separating wall, so there are no moving parts entering the fluid chamber.

Rather than using an external fan to manage heat Kinetic uses an internal fan and 80 cooling fins, which provides both the quietest fluid trainer we have tested and the lowest operating temperature of any fluid trainer.

The flywheel on a trainer simulates the momentum of the bike and rider, increasing the effort needed to accelerate and maintaining speed when coasting. Kinetic fluid trainers have a heavyweight 6.25 pound flywheel for a more realistic ride. 

Recommended Bike Trainers