A larger and heavier flywheel provides a higher MOI and thus a significantly trägeres acceleration. If you try to avoid this effect on the bicycle and in particular wheels, so it is desirable for training purposes. Sprints can train more intensively, so that real sprints are even faster!
The larger mass provides an additional advantage in the Kinetic Rock & Roll Trainers. The rapidly rotating disk mass stabilizes the roll stand on the gyroscopic effect. This results in an even more realistic driving behavior. Especially since the self-stabilization depends by the rotating disc "driven" by the speed and the intensity of the lateral movement.
The flywheel is precision machined and balanced. Splicing vibrations are therefore not to be feared!
Weight: 5 kg