Quote:
Originally Posted by groar
And tried some CoastDownTesting from 110 to 80 km/h (68 to 50 mph). As I didn't found the perfect flat straight road, I used one near home. The 1st run was with the minitail, while the 2nd was without it.
[...]
Hope I'll be able to sort data soon and they will be consistent to show how much improvement the minitail permits.
|
The analysis confirmed that the east-ward data were not consistent enough
Here are the results for the west-ward data :
With MiniTail : avg =
31.35 , stdev =
0.75
Without MiniTail : avg =
30.79 , stdev =
0.51
I'm not very satisfied as it seams that the lower traffic was too much disturbing... and the average difference (31.35-30.79 = 0.56) is between the greatest and the smallest stdev
A simple calculation gives a small
1.8% (31.35/30.79-1) average improvement in power needed from 110 to 80 km/h (68 to 50 mph).
A dump calculation would translate this to a 1.2 mpg if it could be applied asis to my best tank (69 mpg)... but my average speed is certainly under 70 km/h (44 mph).
Denis.
__________________
Save money & CO2 at home :
http://ecorenovator.org/ 
Created and managed by the creators of
http://ecomodder.com/ 
---
Earth and health are priceless, so are kilotank and AT-PZEV
Best Mégane tank: 1268.9mi @ 77.847 MPG(US)
2008/06-2011/10 saving:
- 5725.5 kg CO2 (5342.6+382.9)
- Diesel / Money: 42.17% = 2446.25€ = 3357.26$
---
megane :
thread -
kill switch.