View Single Post
Old 07-06-2009, 05:40 PM   #25 (permalink)
groar
X-Frenchy: very
 
groar's Avatar
 
Join Date: Jun 2008
Location: Toulouse, France
Posts: 595

scenic - '01 renault scenic
90 day: 43.09 mpg (US)

megane - '97 renault megane classic
Diesel
90 day: 72.53 mpg (US)

dennisius - '06 Toyota Prius
Team Toyota
90 day: 69.27 mpg (US)
Thanks: 9
Thanked 33 Times in 23 Posts
Quote:
Originally Posted by groar View Post
I should be able to put back the aerohelps on soon. Hope I'll have time to do a coast down testing, but I haven't found a long and flat road yet to do a 90 to 60 km/h (56 to 37 mph) coast down testing. May be should I attempt a 110 to 80 km/h (68 to 50 mph) one, even if I rarely drive at these speeds.
It took me much more time than I thought so I only coast down with the following configurations :
  • A = standard config
  • B = A + upper grill block
  • C = B + removed wiper blades + folded passenger mirror
  • D = C + rear wheel skirts

Sorry, no final A test...

I found a long enough road to do 110 - 70 km/h coast down testing, but the road wasn't flat enough and too much traffic so I had to remove :
  • all the legs to East
  • several points to West

Here are the results :


I have a lot of respect for all coast down testers (Darrin and all). After this experience I have even more respect. Before doing CDT with the uglyback, I'll try to find another road and a light-to-no traffic moment.

Note #1 : with upper grill block I confirmed 2 differences over 75 km/h vs no upper grill block :
  • I could feel air while the internal vents are opened and the ventilator is off
  • I could hear noise from the wiper blades, noise disappearing in tests C & D

Note #2 :
  • 110 km/h = 68.4 mph
  • 100 km/h = 62.2 mph
  • 90 km/h = 55.9 mph
  • 80 km/h = 49.7 mph
  • 70 km/h = 43.5 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.
  Reply With Quote