Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Taking Insight Lean Burn from 45 to 55 MPH-Impossible?

3-Wheeler · 11-11-2011, 02:43 PM

Hi Jim,

I think you are close, but over calculating just how much power is required.

If you look at the post here...

http://ecomodder.com/forum/268030-post22.html

... you'll see that rolling drag is not proportional to speed. Therefore, the hp requirement does not go up as quickly as the cube of the velocity, but is close.

It also means that you should be able to get a reduction in Cd easier than the classic V^3 equation would lead one to believe.

Hope this helps, Jim.

11-11-2011, 02:43 PM	#2 (permalink)
3-Wheeler Master EcoModder Join Date: Dec 2008 Location: Southern WI Posts: 829 AlienMobile - '00 Honda Insight Team Honda 90 day: 80.05 mpg (US) Thanks: 101 Thanked 563 Times in 191 Posts	Hi Jim, I think you are close, but over calculating just how much power is required. If you look at the post here... http://ecomodder.com/forum/268030-post22.html ... you'll see that rolling drag is not proportional to speed. Therefore, the hp requirement does not go up as quickly as the cube of the velocity, but is close. It also means that you should be able to get a reduction in Cd easier than the classic V^3 equation would lead one to believe. Hope this helps, Jim. __________________ Under-Belly Panels: http://ecomodder.com/forum/showthrea...els-10638.html Tail Extension: http://ecomodder.com/forum/showthrea...ect-13533.html