Kinetic Road MachineThe Kinetic Road Machine is a fluid trainer and also has resistance that varies with your cycling speed. The trainer also has a slightly larger than normal flywheel which means that coasting lasts a little longer than trainers with smaller flywheels. Fluid trainers replicate closely real road cycling conditions but are often plagued by leaking fluid chambers. The Kurt Kinetic Road Machine has a sealed fluid chamber that is guaranteed not to leak.