Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Tonneau/half tonneau.....spoiler/half template

kach22i · 09-30-2018, 10:35 AM

I have a roof wing on my pick-up truck and a full full tonneau cover of coroplast.

My conclusion; roof wing with without a full tonneau cover is inferior a full tonneau cover alone.

This conclusion is based on drag and mpg, not on down force or road safety.

I like to keep my truck planted on the road, and the roof wing helps do that at speed. Sand bags held in place over the rear axle do it at low speed and off the line.

Freebeard posted this a while back, sure looks interesting.

https://ecomodder.com/forum/showthre...-19525-12.html

I have not yet had a chance to build follow up idea like aardvarcus has done, but I posted some concept sketches a while back.

Roof Spoiler on Pick-Up Truck Cab - Phase-2
https://ecomodder.com/forum/showthre...a-19525-9.html

More sketches in link above.

And other format studies.

09-30-2018, 10:35 AM	#11 (permalink)
kach22i Master EcoModder Join Date: Jul 2011 Location: Ann Arbor, Michigan Posts: 4,190 Thanks: 133 Thanked 2,813 Times in 1,975 Posts	I have a roof wing on my pick-up truck and a full full tonneau cover of coroplast. My conclusion; roof wing with without a full tonneau cover is inferior a full tonneau cover alone. This conclusion is based on drag and mpg, not on down force or road safety. I like to keep my truck planted on the road, and the roof wing helps do that at speed. Sand bags held in place over the rear axle do it at low speed and off the line. *Freebeard* posted this a while back, sure looks interesting. https://ecomodder.com/forum/showthre...-19525-12.html I have not yet had a chance to build follow up idea like *aardvarcus* has done, but I posted some concept sketches a while back. Roof Spoiler on Pick-Up Truck Cab - Phase-2 https://ecomodder.com/forum/showthre...a-19525-9.html More sketches in link above. And other format studies. __________________ George Architect, Artist and Designer of Objects 2012 Infiniti G37X Coupe 1977 Porsche 911s Targa 1998 Chevy S-10 Pick-Up truck 1989 Scat II HP Hovercraft You cannot sell aerodynamics in a can............ Last edited by kach22i; 09-30-2018 at 10:50 AM..