lorenfb wrote:Read it again! There're two factors affecting energy loss while the vehicle is moving:
1. the rolling resistance energy loss - not affected by any aero mods & contributes the most below 45 - 50 MPH, increasing tire pressure beyond normal has minimal effect
2. the drag energy loss - has the most effect at highway speeds greater than 50 MPH, without major body
re-designs and when driving at speed limits, aero mods have little to no REAL effects.
Without any real data, e.g. using a scientific methodology, the results provided in this thread are no better than conjecture!
Um, not really.
The drivetrain efficiency is the most important factor to efficiency to moving the car. This is why EV's are so much better than ICE vehicles.
The second most important factor is aerodynamic drag. For typical cars HALF the load on the drivetrain occurs at 28-30MPH. And it increases rapidly - aero drag goes up by the square of the speed.
Rolling resistance is third, and it increases linearly, so it dominates below 28-30MPH.
Weight is next - and weight can be partially regained, through coasting and regen.
Here's my blog post on this, based on the data from the Automotive X-Prize:http://neilblanchard.blogspot.com/2010/09/x-prize-knockout-round-cont.html