Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Stainless Kammback for Previa Redux. Now With More Stainless!

orange4boy · 04-29-2010, 04:59 PM

I had a the inspiration to work on the kammback or partial boattail, if you will, a couple of days ago.

The top part is now finished except for closing off the end. I cut new trailing edge pieces and extended the lower section rearward to make the end angled instead of vertical as it was in the prototype.

I also slightly reduced the inward angle of the sides as they were somewhere around 20˚ which is fine if all is perfect. I think it looks miles better now and the wake should be a bit smaller. The top piece of lexan is unchanged.

I'm still thinking about how to finish the bottom section. I would like to be able to use it for storage but it should be easily removed and light weight. More thinking required.

It's only a little bit heavier now but I need new struts. I have to prop it up to keep the back open. New struts should hold it up fine.

The prototype for comparison:

04-29-2010, 04:59 PM	#1 (permalink)
orange4boy Master EcoModder Join Date: Aug 2008 Location: The Wet Coast, Kanuckistan. Posts: 1,275 The Golden Egg - '93 Toyota Previa DX 90 day: 31.91 mpg (US) Chewie - '03 Toyota Prius 90 day: 57 mpg (US) The Spaceship - '00 Honda Insight Thanks: 100 Thanked 306 Times in 178 Posts	Stainless Kammback for Previa Redux. Now With More Stainless! I had a the inspiration to work on the kammback or partial boattail, if you will, a couple of days ago. The top part is now finished except for closing off the end. I cut new trailing edge pieces and extended the lower section rearward to make the end angled instead of vertical as it was in the prototype. I also slightly reduced the inward angle of the sides as they were somewhere around 20˚ which is fine if all is perfect. I think it looks miles better now and the wake should be a bit smaller. The top piece of lexan is unchanged. I'm still thinking about how to finish the bottom section. I would like to be able to use it for storage but it should be easily removed and light weight. More thinking required. It's only a little bit heavier now but I need new struts. I have to prop it up to keep the back open. New struts should hold it up fine. The prototype for comparison: __________________ Vortex generators are old tech. My new and improved vortex alternators are unstoppable. "It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.