Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Vortex generators - where's the solid data for hatchback/van benefits?

bryan · 12-30-2007, 08:56 AM

At last a site for milage OCD!

I drove from Vancouver to San Antonio and back in a 1995 VW Eurovan camper at the local posted speed limit. Gas auto otherwise unmodified typical 16 mpg. I would remove/install these VG's at fill ups and check mileage per tank. Considering the cost (2 yogurt containers & a meter of white electrical tape) the approx. 7% mileage increase (~$50 saved - $85 if I'd had them on the whole trip) was acceptable. Definitely a TLAR installation. Would be nice to do wind tunnel/tuft/rainy day video testing to optimize location.
A similar installation on a VERY heavy U-Haul trailer showed a 2% improvement.

12-30-2007, 08:56 AM	#4 (permalink)
bryan EcoModding Lurker Join Date: Dec 2007 Location: Darwin Posts: 6 Trakka - '95 Volkswagen T4 Transporter / EuroVan Trakka Camperization Thanks: 0 Thanked 0 Times in 0 Posts	VG freeway stats At last a site for milage OCD! I drove from Vancouver to San Antonio and back in a 1995 VW Eurovan camper at the local posted speed limit. Gas auto otherwise unmodified typical 16 mpg. I would remove/install these VG's at fill ups and check mileage per tank. Considering the cost (2 yogurt containers & a meter of white electrical tape) the approx. 7% mileage increase (~$50 saved - $85 if I'd had them on the whole trip) was acceptable. Definitely a TLAR installation. Would be nice to do wind tunnel/tuft/rainy day video testing to optimize location. A similar installation on a VERY heavy U-Haul trailer showed a 2% improvement. Attached Thumbnails Last edited by bryan; 12-30-2007 at 09:05 AM.. Reason: photo issues