Ordered Airtabs today!

[thisisntjared]

Originally Posted by SVOboy

Interesting results. Can you dig up a weather comparison between the two trips for us?

i am curious too, especially with the winter summer blend mix ups as a possibility. :/

[dogncatboy]

Originally Posted by jeffreymccoy

Just arrived from the 333 mile trip from Raleigh to Baltimore.

Previously, this tri yielded a 22.3 MPG hwy run...arriving with just over 1/4 tank left.

Today, with airtabs and wheel covers, it increased to 26.7 MPG...arriving with about 1/2 tank left!

Very exciting gains. I will update you guys with the leg home info if you want. Then I'll drop it.... they work, at least on my truck. Take care all.

How much do you think was the wheel covers? It'd be interesting to know.

[jeffreymccoy]

On 8/8/2007:
http://www.wunderground.com/history/...q_statename=NA

Temperature:
Mean Temperature 79 °F / 26 °C 63 °F / 17 °C
Max Temperature 93 °F / 33 °C 74 °F / 23 °C 87 °F / 30 °C (1990)
Min Temperature 65 °F / 18 °C 51 °F / 10 °C 35 °F / 1 °C (1964)
Degree Days:
Heating Degree Days 0 4
Month to date heating degree days 0 28
Since 1 July heating degree days 3 49
Cooling Degree Days 14 2
Month to date cooling degree days 77 22
Year to date cooling degree days 2035 1496
Growing Degree Days 28 (Base 50)
Moisture:
Dew Point 65 °F / 18 °C
Average Humidity 66
Maximum Humidity 93
Minimum Humidity 38
Precipitation:
Precipitation 0.00 in / 0.00 cm 0.11 in / 0.28 cm 2.54 in / 6.45 cm (1996)
Month to date precipitation 0.13 0.94
Year to date precipitation 26.35 34.80
Snow:
Snow 0.00 in / 0.00 cm - - ()
Since 1 July snowfall 0.0
Snow Depth 0.00 in / 0.00 cm
Sea Level Pressure:
Sea Level Pressure 30.03 in / 1017 hPa
Wind:
Wind Speed 2 mph / 3 km/h (SSE)
Max Wind Speed 8 mph / 13 km/h
Max Gust Speed 13 mph / 21 km/h
Visibility 10 miles / 16 kilometers
Events Fog



Today, 8/22/2007:
http://www.wunderground.com/history/...q_statename=NA

Actual: Average : Record :
Temperature:
Mean Temperature 70 °F / 20 °C 58 °F / 14 °C
Max Temperature 83 °F / 28 °C 70 °F / 21 °C 86 °F / 30 °C (1947)
Min Temperature 56 °F / 13 °C 46 °F / 7 °C 26 °F / -3 °C (1974)
Degree Days:
Heating Degree Days 0 8
Month to date heating degree days 23 114
Since 1 July heating degree days 26 135
Cooling Degree Days 4 0
Month to date cooling degree days 133 39
Year to date cooling degree days 2091 1513
Growing Degree Days 20 (Base 50)
Moisture:
Dew Point 54 °F / 11 °C
Average Humidity 63
Maximum Humidity 83
Minimum Humidity 41
Precipitation:
Precipitation 0.00 in / 0.0 cm 0.09 in / 0.23 cm 0.62 in / 1.57 cm (1958)
Month to date precipitation 0.30 2.35
Year to date precipitation 26.52 36.21
Snow:
Snow 0.00 in / 0.00 cm - - ()
Since 1 July snowfall 0.0
Snow Depth 0.00 in / 0.00 cm
Sea Level Pressure:
Sea Level Pressure 30.23 in / 1025 hPa
Wind:
Wind Speed 3 mph / 6 km/h ()
Max Wind Speed 15 mph / 24 km/h
Max Gust Speed 17 mph / 27 km/h
Visibility 10.0 miles / 16.1 kilometers



Little cooler this week than 2 weeks ago, and slightly less humidity. Pretty close to the same, even avg wind was close 3 vs 2, although gusts were a little different. Overall, similary conditions between the 2 days, nice sunny fall days....

[SVOboy]

Pretty cool, nice bonus that is was cooler...interesting stuff.

[jeffreymccoy]

Originally Posted by dogncatboy

How much do you think was the wheel covers? It'd be interesting to know.

I gained 4.4 MPG or so on the run this week. Based on previous test route evaluation, I think that I gained 2MPG with the wheel covers / well covers, and then another 2 with the airtabs...

this is based on the following

before well & wheel covers:
21.5 / 22.5 / 20.5 / 21.5


After covers / Before Airtabs, according to SGII
23.6 / 22.6 / 20.6 / 23.7

After airtabs installed, according to SGII
25.7 / 24.3 / 22.0 / 25.6

Hope this helps.

[omgwtfbyobbq]

Any chance you could post up your route?

[jeffreymccoy]

Sure:
From Apex, NC
US1 N
440 Beltline
64 E
95 N
295 Richmond bypass
95 N
495 beltline
95N
MD-100
Snowden River Parkway Marriott Hotel

See it here...map is slightly off, due to the fact that I took the Richmond bypass for example. I dont know how to tell google to map that way..but here is the general route. My directions above are accurate. My mileage read 333 miles when I filled up in Columbia...

I dont have my ftp user credentials on my travel laptop, so I cant post the map pic right now, but use this link to see the route...

Google Maps Route

[JanGeo]

Actually if you really wanted to make some airtabs then make them in a strip of plastic already properly spaced as one piece and apply the entire tab strip to teh top and sides of the car. Man I am thinking if it can help an F150 with that kind of mileage it should really make a difference in my xB.

[jeffreymccoy]

I saw an xB flying down the road today and thought the same thing - could be a big deal on the back of that square box.... I am going to apply them to the family chevy express van next. I think they do what they say they do... depends on the shape of the car as to how effective they are.

[DarbyWalters]

It inspired me to add three air tabs to each side of my Jeep Liberty...they don't look out of place at all...maybe because there aren't so many. I do have to say that I was in a wicked crosswind with gusts up to ~30+ and the Jeep felt stable.