It is well known that on flat terrain the importance of the rider’s weight, and therefore the w/kg ratio, loses much relevance, as gravity is not as determining a factor as in climbing.
In fact, the main forces to overcome are aerodynamics and rolling resistance.
Even at certain speeds (40km/h or more) the rider’s weight favors inertia, which supposes an accumulation of kinetic energy that means that less watts are needed to maintain said speed than if the rider is lighter and has less inertia.
This morning I witnessed a ridiculous and unrealistic fact regarding “simulation”.
Someone with a weight of 63kg and pushing 329W (180cm height, so no “aero” CdA advantage) has won by almost 2 minutes difference VS two professional cyclists, one of them weighing 81kg and pushing 393W in the ITT developed on completely flat terrain such as Tempus Fugit.
Anyone with minimal knowledge of cycling can know that in real circumstances, the professional pushing 64W more on the flat and weighing 20kg more, it is normal to beat the light rider by at least 3 minutes.
We know that many people love climbing and for them cycling is just that, but the reality is that not everything is climbing in cycling and we would like some realism in terms of simulation on flat terrain.
There are many physical-mathematical models and data in bibliography to predict behaviors in this field, and if the Zwift team does not know them or cannot obtain them, which is highly unlikely, surely some of us can provide them.
Thanks for your attention.