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brucepick · 03-22-2013, 12:27 PM

Nice going. You're already on your way, modding and improving your results.

After looking up EPA mpg estimates for all the small pickups i could find I found the Ranger/Mazda ones offered the best basic mpg.

Anyway I like the partial roof extension idea. I did one on my Civic with good results. See this thread for videos and notes:
http://ecomodder.com/forum/showthrea...ion-23319.html

Here's the video:
http://m.youtube.com/#/watch?v=wQuqe...%3DwQuqejBVn6U

I expect your cab roof is slightly domed, rounded. Getting a smooth transition to an extension requires some craftsmanship. Or just attach it to cab's exterior rear wall as high up as you can and hope for the best, if done that way you could hinge it. Side panels will be good supports.

I think 15 degrees down slope might be a hair too steep. Do a search on "degrees" in the aerodynamics subforum and you should find plenty posts. Anything from "aerohead" aka Phil Knox deserves your close attention.

How about a full aero cap made of flat panels? Slit it lengthwise into 3-4 pieces. Stow it in bed for large loads. However would probably require tailgate down when stowed in the bed I think.

03-22-2013, 12:27 PM	#2 (permalink)
brucepick OCD Master EcoModder Join Date: Dec 2007 Location: Eastern CT, USA Posts: 1,936 Outasight - '00 Honda Insight Team Honda Gen-1 Insights 90 day: 54.18 mpg (US) Thanks: 431 Thanked 396 Times in 264 Posts	Nice going. You're already on your way, modding and improving your results. After looking up EPA mpg estimates for all the small pickups i could find I found the Ranger/Mazda ones offered the best basic mpg. Anyway I like the partial roof extension idea. I did one on my Civic with good results. See this thread for videos and notes: http://ecomodder.com/forum/showthrea...ion-23319.html Here's the video: http://m.youtube.com/#/watch?v=wQuqe...%3DwQuqejBVn6U I expect your cab roof is slightly domed, rounded. Getting a smooth transition to an extension requires some craftsmanship. Or just attach it to cab's exterior rear wall as high up as you can and hope for the best, if done that way you could hinge it. Side panels will be good supports. I think 15 degrees down slope might be a hair too steep. Do a search on "degrees" in the aerodynamics subforum and you should find plenty posts. Anything from "aerohead" aka Phil Knox deserves your close attention. How about a full aero cap made of flat panels? Slit it lengthwise into 3-4 pieces. Stow it in bed for large loads. However would probably require tailgate down when stowed in the bed I think. __________________ Coast long and prosper. Driving '00 Honda Insight, acquired Feb 2016. Last edited by brucepick; 03-22-2013 at 08:50 PM..