Thread: Espace 3
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Old 08-10-2021, 09:42 AM   #2 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
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Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by maanma View Post
My target is lower consuption for speeds 80 - 95 mph. Consuption varies 29.4 - 23.5 mpg. Lower is typical Normandy hilly region. ...
Did you mean KPH? If not and you mean MPH, why so fast? Your easiest and most cost effective mod will simply be to slow down a little. Aerodynamic drag increases fast per than speed. Stay under 80 and you'll definitely see fuel economy benefits...

Assuming you can't or won't slow down. A rear difuser for that underside is an idea, but you will want to design and test it before you settle on a shape. Keep it smooth (no fins) and measure the angle of the difuser precisely if possible.

What kind of car is this?
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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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