View Single Post
Old 09-14-2019, 09:37 AM   #1 (permalink)
Master EcoModder
Join Date: May 2010
Location: Illinois
Posts: 452

Oh Deer - '03 Ford Ranger XL
90 day: 33.16 mpg (US)
Thanks: 54
Thanked 79 Times in 63 Posts
Under body air flow idea ?

Hello again everyone.

Having an hour drive to work everyday on the same roads sort of puts me in "auto pilot" and I can let my mind wander through crazy ideas. This is another one. I have no clue if it has any merit at all, but I thought I would at least share it and maybe learn something new again from you all.

This came from reading the thread about tire deflectors and spats here:

Seeing the pictures of how short vertically some of the stock deflectors/spats are on some of the cars in the pictures, while maybe not the perfect shape or height, they must have some advantage or they wouldn't be there. Some only looked to be 1 1/2" tall at most. So that got me thinking, if such a short piece of plastic can move enough air from the front of the tires, can the same concept be used in other places for some small advantage.

So this is what I came up with. If you used something like aluminum angle trim (mainly because it's cheap and easily installed) on the underside of a front under tray, could it help? Some people (me included) don't have the skill or ambition to fabricate a full length under body tray. But may try a half or just front tray that extends to just behind the front wheels. The picture probably explains where my head is at better than my words. Dotted lines = longer tray/longer deflectors.

If you extend the "deflector lines" out they would be just outside the rear tires, similar to the large deflectors you see on semi trucks. So, just how far off base am I? could this help keep some of the air away from the under body stuff like differential and rear bumper on older vehicles or pick up trucks?

Attached Thumbnails
Click image for larger version

Name:	Diverter.png
Views:	75
Size:	4.0 KB
ID:	26830   Click image for larger version

Name:	angle trim.jpg
Views:	21
Size:	4.2 KB
ID:	26831  

Last edited by hat_man; 09-14-2019 at 09:43 AM..
  Reply With Quote
The Following User Says Thank You to hat_man For This Useful Post:
aerohead (09-14-2019)