Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - A 20% reduction in drag = a 10% increase in fuel economy ?

freebeard · 10-22-2012, 09:53 PM

My guess would be that the the original '20% gets 10%' conjecture is a 'rule of thumb', based on the total resistance being half aero and half rolling resistance; but with rolling resistance being linear and aero being exponential—not always accurate in all cases.

Edit: So I see it's not that I'm a slow typist, there were three pages to the thread, not one.

So I'm going to fall back to Your Mileage May Vary.

10-22-2012, 09:53 PM	#26 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 28,557 Thanks: 8,092 Thanked 8,882 Times in 7,329 Posts	My guess would be that the the original '20% gets 10%' conjecture is a 'rule of thumb', based on the total resistance being half aero and half rolling resistance; but with rolling resistance being linear and aero being exponential—not always accurate in all cases. Edit: So I see it's not that I'm a slow typist, there were three pages to the thread, not one. So I'm going to fall back to Your Mileage May Vary. Last edited by freebeard; 10-22-2012 at 09:59 PM..