Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - How to decide whether to remove rear spoiler to decrease drag, improve mileage

Piwoslaw · 10-23-2008, 02:21 AM

What about spoilers for hatchbacks? I've noticed a few types:
- Type 1 - placed below the rear window

- Type 2 - above the window, extending above the roofline with a gap under it

- Type 3 - above the window, extending the roof horizontally of slightly down

- Type 4 - above the window, tiny

Here is a Honda with two spoilers, types 1 and 3

Which of these will help or hurt FE? I can tell that type 2 probably produces drag, but what about type 1? Does the tiny type 4 do anything?

10-23-2008, 02:21 AM	#38 (permalink)
Piwoslaw aero guerrilla Join Date: Oct 2008 Location: Warsaw, Poland Posts: 3,763 Svietlana II - '13 Peugeot 308SW e-HDI 6sp 90 day: 58.1 mpg (US) Thanks: 1,368 Thanked 762 Times in 482 Posts	What about spoilers for hatchbacks? I've noticed a few types: - Type 1 - placed below the rear window - Type 2 - above the window, extending above the roofline with a gap under it - Type 3 - above the window, extending the roof horizontally of slightly down - Type 4 - above the window, tiny Here is a Honda with two spoilers, types 1 and 3 Which of these will help or hurt FE? I can tell that type 2 probably produces drag, but what about type 1? Does the tiny type 4 do anything? __________________ e·co·mod·ding: the art of turning vehicles into what they should be What matters is where you're going, not how fast. "... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell [Old] Piwoslaw's Peugeot 307sw modding thread