07-11-2009, 01:45 AM
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#1 (permalink)
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Master EcoModder
Join Date: Jun 2008
Location: Saint Louis, MO
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Kammback yields +4 mpg
I got 55 mpg highway with it versus 51 mpg without.
Full details and photos on my blog, note the awesome new EM decals!
Scientific Method meets Fuel Economy: Kammback
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Other popular topics in this forum...
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07-11-2009, 01:58 AM
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#2 (permalink)
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Moderate your Moderation.
Join Date: Nov 2008
Location: Troy, Pa.
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Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US)
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Not bad... not bad at all.
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"żʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
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07-11-2009, 02:25 AM
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#3 (permalink)
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Master EcoModder
Join Date: Aug 2008
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Nice looking bubble! I like your simple but effective fabrication.
You have an escort/pacer hybrid started.
I've been dying to do this for the egg but I'm too busy at the moment and can't justify it because I do so little highway driving.
Just play "Stand by Your Man" by Patsy Klein.
Living vicariously...
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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.
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07-11-2009, 02:54 AM
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#4 (permalink)
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Grasshopper
Join Date: Feb 2009
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two  up |
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07-11-2009, 03:02 AM
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#5 (permalink)
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aero guerrilla
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Wow, that looks good, Gascort 
Have you coastdown tested it yet? I wonder what the effect on Cd is?
The bubble sticks out so far behind the bumper that I'd advise you to put some red reflective tape on the back. Not everyone pays attention, unfortunately.
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread
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07-11-2009, 03:48 AM
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#6 (permalink)
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Pokémoderator
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gascort -
Fantastic job! How thick is the plexiglass? It seems "thin enough" to bend really well. Is it bending from the bolts or did you have to heat it?
CarloSW2
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07-11-2009, 08:42 AM
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#7 (permalink)
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Master EcoModder
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Location: Arkansas
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Cool!
Excellent fabrication gascort. Smart solution to reducing the turbulent wake of your car without losing rearward visibility or the functionality of the hatch.
Bondo
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07-11-2009, 09:42 AM
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#8 (permalink)
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Administrator
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VERY nice! I love it.  |
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07-11-2009, 11:23 AM
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#9 (permalink)
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Master EcoModder
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That looks awesome!
The way it's mounted reminds me of bicycle racks that strap onto the trunk - so maybe this could double as a bicycle rack. I would guess the 1/2" conduits probably aren't strong enough to support too much weight though.
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07-11-2009, 11:42 AM
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#10 (permalink)
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Master EcoModder
Join Date: Jun 2008
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Quote:
Originally Posted by Piwoslaw
Wow, that looks good, Gascort
Have you coastdown tested it yet? I wonder what the effect on Cd is?
The bubble sticks out so far behind the bumper that I'd advise you to put some red reflective tape on the back. Not everyone pays attention, unfortunately. |
Thanks!!
In part of my test route there is a huge hill. It's on my commute and my goal is to be able to EOC the whole way down without losing speed.
When I tested it yesterday, I coasted (on average) more than twice as far before dropping 5 mph than without. On one trial I tripled the length!
...
I do have reflectors/red LEDs planned. Good point!
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Past 
Present 
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