View Full Version : Aero & rolling resistance computer

26 November 2016, 1514
Someone might find this site useful, or at least interesting. Apparently, you can plug in various values for your vehicle and it will calculate its rolling resistance and power needed to achieve various speeds: http://ecomodder.com/forum/tool-aero-rolling-resistance.php

28 September 2019, 0103
That doesn't look quite accurate. Rolling resistance isn't constant, it goes up linearly with speed. Unless they don't consider bearing-drag part of rolling resistance?

Of course as speeds increase, rolling resistance becomes negligible compared to wind-resistance, which increases by xquare-power of speed. And power required to overcome that wind-drag goes up by cube-power of speed.