04-26-2011, 12:59 AM
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#11 (permalink)
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EcoModding Dilatant
Join Date: Jul 2008
Location: NC
Posts: 262
Volvo - '00 Volvo V70 XC AWD SE 90 day: 27.7 mpg (US)
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Thanked 27 Times in 17 Posts
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They are vinyl rain gutter with the front cut off. I use the same thing for my air dam.
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04-26-2011, 02:55 AM
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#12 (permalink)
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Master EcoModder
Join Date: Feb 2008
Location: belgium
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Quote:
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Are those soffit vents that you are using?
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no... they're louvers, the kind that's punched trough from a single metal sheet... they have a screw in each corner, but are mostely held in place with tape... not sure they do much or are in the right spot, but they just sit between the radiator and the engine block wich is where i imagine the most air would exit before the tray was on.
__________________
aer·o·dy·nam·ics: the science of passing gass
*i can coast for miles and miles and miles*
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04-26-2011, 10:28 AM
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#13 (permalink)
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EcoModding Dilatant
Join Date: Jul 2008
Location: NC
Posts: 262
Volvo - '00 Volvo V70 XC AWD SE 90 day: 27.7 mpg (US)
Thanks: 4
Thanked 27 Times in 17 Posts
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oops, th9ought you were asking about the side skirts.
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04-26-2011, 12:52 PM
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#14 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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I love the photos. Thanks. I need some advice. I removed my prototype spats because they were clearly a net negative. I did not ABA test them. I wonder if they were too large. Mine were 2.5 inches (the space from bumber to the ground being only about seven inches. Would that be too large? Not large enough? Is there a proportional rule I might follow?
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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04-26-2011, 07:00 PM
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#15 (permalink)
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EcoModding Dilatant
Join Date: Jul 2008
Location: NC
Posts: 262
Volvo - '00 Volvo V70 XC AWD SE 90 day: 27.7 mpg (US)
Thanks: 4
Thanked 27 Times in 17 Posts
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You might be interested in this article where tire spats were evaluated for lift and drag on a Prius. Evidently drag reduction is very sensitive to size, placement, and angle. Make them too large and they can increase both.
Autospeed - Modifying Under Car Airlfow |
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The Following 4 Users Say Thank You to instarx For This Useful Post:
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04-26-2011, 08:48 PM
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#16 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Thanks for that link instarx. I think I saw it once before but had forgotten, and I realize now that I was doing something akin to position number 5 on their list--seems like the worst idea. I'll try again with some other designs.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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04-26-2011, 09:56 PM
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#17 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299
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I just installed a quick prototype of coroplast fitting these rough demensions and position from your link above:
#4
270mm x 25mm, covers lower suspension link and tire
Drag 0.277
Front lift 0.038
Rear lift 0.121
My car is significantly different than this prius, but it has some very general similarities. If it feels alright on the road, I'll ABA test it soon.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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04-26-2011, 10:19 PM
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#18 (permalink)
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Master EcoModder
Join Date: Oct 2009
Location: Texas
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I put the factory spatzs on to the underbelly panel in the same location they were in.
the[ underbelly pan is lower than the factory belly pan because of the IMPUL body kit  |
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04-27-2011, 02:23 PM
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#19 (permalink)
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EcoModding Dilatant
Join Date: Jul 2008
Location: NC
Posts: 262
Volvo - '00 Volvo V70 XC AWD SE 90 day: 27.7 mpg (US)
Thanks: 4
Thanked 27 Times in 17 Posts
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Quote:
Originally Posted by mcrews
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mcrews - tell me you didn't crawl under that car balanced on the edge of those wooden blocks!
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04-27-2011, 10:42 PM
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#20 (permalink)
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Master EcoModder
Join Date: Oct 2009
Location: Texas
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wooden ramps held together w/3 inch wood screws
the IMPUL front bumper is too low to use regular ramps so I had to build some.
base is a 2X8 then 3 2X6 the other side was dead on.
But thanks for your concern!!!!
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