[groar]

Originally Posted by groar

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.