Quote:
Originally Posted by Sven7
MPG % increase is half of aero % increase.
|
And it's nice to explain in more detail why this is....
I have done numerous coast down tests with the Insight and Crr and Cd are about equal at 35 mph or so.
This means if you change the aero of your car and make it 100% more slippery to the wind, it will gain you 50% more gas savings, because while the aero part improved 100%, the Crr part stayed the same. Then when you add the new Cd and the old Crr, you have a 50% net gain.
Jim.