Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Basic advice (going from 0.33 to 0.28 on a hatchback car)

damunk · 02-01-2013, 05:29 PM

Hello guys,

Do you think with: (full bellypan)
1)Front undertray - with specially shaped (mercedes sls - Curved shape with exit deflectors behind wheel) wheel wind deflectors
2)middle tray - with rear wheel wind deflectors
3)rear diffuser
4)car lowered - sports look
5)wheel wells filled from inside to reduce further gap

Can reduce CD from 0.33 to 0.28 on a hatchback car? I know this question is difficult to be accurate but with some of you guys with years of experience I am sure you would have done calculations and more calculations to get a general idea and that is what I am asking for. Do you think 0.30 is more realistic.

I feel 0.28 would see not only FE significant gain but also small Performance gain. 0.05 reduction asking too much for a really well designed under body?

02-01-2013, 05:29 PM	#1 (permalink)
damunk damunk Join Date: Jun 2012 Location: England Posts: 22 Thanks: 6 Thanked 0 Times in 0 Posts	Basic advice (going from 0.33 to 0.28 on a hatchback car) Hello guys, Do you think with: (full bellypan) 1)Front undertray - with specially shaped (mercedes sls - Curved shape with exit deflectors behind wheel) wheel wind deflectors 2)middle tray - with rear wheel wind deflectors 3)rear diffuser 4)car lowered - sports look 5)wheel wells filled from inside to reduce further gap Can reduce CD from 0.33 to 0.28 on a hatchback car? I know this question is difficult to be accurate but with some of you guys with years of experience I am sure you would have done calculations and more calculations to get a general idea and that is what I am asking for. Do you think 0.30 is more realistic. I feel 0.28 would see not only FE significant gain but also small Performance gain. 0.05 reduction asking too much for a really well designed under body? Last edited by damunk; 02-01-2013 at 05:39 PM..