Neon Aeromod coastdown testing Results

[2000mc]

thanks cfg83
where my imagination put the traditional length of bonneville spoiler is about where the template would intersect.

i think one of the problems with the nascar style, or sloping a bonnevile type up is that, even though they fit in the template, the template is 2d while the car is 3d. so if youre not just extending part of the body back to meet it, air coming around the sides of the car causes additional drag when it hits the spoiler. i wonder if a nascar type spoiler tapered off at the sides would do better, but kinda doubt its even worth testing

[2000neon]

As for the nascar spoiler, i think that you are right. From the increase in drag that I got, even if there is room for slight improvememt, I dont think it would be enough to even break even, let alone decrease drag any substantial amount.

[dohcsvt]

So do you have any real world MPG numbers for before and after?

[2000neon]

I have a ton of before numbers, I am hoping to get the real version of the bonneville spoiler installed tomorrow to get some after numbers. Unfortunately I am stuck with tank-tank averages.

[kach22i]

Interesting project, keep up the good work.

[dohcsvt]

You gotta have some tank to tank by now?
I am looking into this for my neon, but wanna see how yours turned out.

[2000neon]

I only actually have one tank so far, last week I had a surgery to fix a hernia and so I havent been driving at all for a little while. The last half of a tank and one full tank I have on it seem promising though, the full tank came in as 44.2 mpg US compared to an average of 43.1. I will be driving again tomorrow and will have more numbers coming in.

I will also get pictures of the finished product. Sorry for the delays.

[2000neon]

Filled up again, 43.82mpg, a little bit more city driving on this tank and still higher than previous averages. More time will tell, but it seems to be a ~ 1 mpg improvement. I painted it today so I will get the finished pictures in the morning.

[dohcsvt]

1MPG, thats pretty good. I have my little Neon at about 40-41 mpg. I had been carpooling with a guy and now I am not. I seem to be getting about 1 to 2 mpg better with the less weight. Now, if I do the aeromods, I hope to get another MPG hopefully. I have to go get the material and try this out. I am just going to duct tape the stuff on for initial testing, then I will perform a permanent attachment.

[2000neon]

Depending on the aero mods, you can easily get more than 1 mpg. Keep in mind that my car is an automatic, with decent aero I would think 45+ should easily be possible for you.