Minivan Kardboard Kammback boosts MPG +3.7% (6.6%, counting roof rack delete)

[Christ]

Chrome it... spray it in some candy color fro accents, then add ridiculous lights to it.

Marketing scheme for the new generation.

[MetroMPG]

Found a pic with showing the Kammback from another angle:



When I did the testing, I had placed reinforced cardboard "triangulation" bracing from the bumper to the lower outer corners of the Kammback to fix them in place. Didn't want them flapping at 55 mph.

[ShadeTreeMech]

Why not make the kammack out of plexi? It's kinda cheap, weatherproof, and won't get in the way of the tail lights not being seen as designed

[ChristsMirror]

How are you getting 30+ MPG I have an '01 and only get 21 MPG were you using hyper miler techniques?

[2003protege]

Originally Posted by ChristsMirror

How are you getting 30+ MPG I have an '01 and only get 21 MPG were you using hyper miler techniques?

This is fuel economy at a steady 55 mph. The tank mpg would be significantly less given starts/stops and freeway driving above 55.

[MARTINSR]

All I know is I am putting this in my things to try in the future file. I take 5-6 thousand mile road trips most every year and a few mods like that will get me another nights hotel.

Brian

[MrMiata]

Originally Posted by MARTINSR

All I know is I am putting this in my things to try in the future file. I take 5-6 thousand mile road trips most every year and a few mods like that will get me another nights hotel.

Brian

Ditto on the things to do list. This is a mod that I will be doing on my'03 Matrix.
Thanks for the post, Bob

[corystal]

Originally Posted by trebuchet03

Going from 100 to 200mpg isn't as effective as going from 10 to 11mpg This is why I think we should be using gallons per 100 mile rather than mpg. It's much easier to see the difficulty in sipping less fuel when the asymptote is 0 and not some unknown mpg number

21.5mpg = 4.65 g/100mi
23mpg = 4.34 g/100mi

100mpg = 1.00g/100mi

hear hear! though.. lets go all the way and make it l/100km!

[MetroMPG]

Originally Posted by MrMiata

Ditto on the things to do list. This is a mod that I will be doing on my'03 Matrix.
Thanks for the post, Bob

Mr Miata - you could do a nice tapered hardtop for the convertible as well. I'm sure I've even seen a photo of an aftermarket one. Not going to get much use in the top-down season though.

[corystal]

oops.... guess i shoulda read some of the following posts
he he...im new here.