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Old 01-30-2012, 07:15 PM   #19 (permalink)
aerohead
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odd situation

Quote:
Originally Posted by johnunit View Post
by distance, maybe 2/3 city. The thing is when I do hit the highway it tends to be for 2+ hour trips (to Belleville, Peterborough, or London for Ontario folks), at sustained speeds of 95kmh+ (flow of traffic). So I'm in the odd situation where I could spend 2 months without aero really mattering and then it could save me 20 bucks in a day.
Man o man,it's hard to think of things that will show at the pump,but won't slam the OEM look.
A wrap-around front air dam would help point the air down the sides.Then all the Trans Am Firebird mods would make a difference.
The higher performance cars will add a rear deck spoiler which allows no more than a 14-17 degree angle from the top rear edge of the roof,down to the top of the spoiler.And the spoiler can't be steeper than 30 degrees up from horizontal without making the drag go back up.
If you have a clutch fan,then above 64 km/h she'll be free-wheeling anyway,so there's no real savings with an electric on the highway.
All the bellypan you could stomach would be great! Then that section under the trunk,to the bumper could be cleaned up.You could even do a diffuser.
You might compare the actual size of the radiator with the grille opening.If there's 'fat' to trim there,you could block some of that from behind where it won't show.If you can make an airtight duct to the radiator( like NASCAR does) the front opening can be even smaller.
If don't know if you can shop for any lower rolling resistance for the size tires you're looking for,but if so,it would pay dividends.
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