Any other OR owners elect to ADD the air dam?

A pheasant took mine off. Well at least a chunk of it. My mileage did go down about a mile per gallon.

 

This is really easy... every time you fill up, write your mileage on your receipt. You take your new mileage minus your previous mileage divided by the number of gallons it took you to fill up. Compare several without the spoiler and several with. It is even easier when you have long trips or routines that are consistent. Expect that low speed around town driving will not benefit one way or the other. Higher speeds/Highway/Interstate will be where the differences show themselves.

Many folks ‘pay it forward’ giving it for free. I got mine this way, even though I offered a few bucks for meeting me. Good karma with your fellow local Tacoma owners!

 

I’ve got one in SoCal if anyone wants it

 

You need the fuelly app, way easier and you can look back on every fill up.

 

Sup?

 

Wassup?

 

Not sure. You tagged me?

 

No, I quoted you and answered the question.

 

I always wanted to try it to see if it would make a difference, but I'm unwilling to pay to add it. Anyone near Sacramento giving theirs away?

 

Really having a hard time figuring out why you quoted me with a picture.

 

You will figure it out one day, if not oh well.

 

I’ll be happy to take it off your hands. Where in SoCal?

 

We just sharing truck pics?

 

Had to take mine off after 3 year because of the damn %40 TRD sale and put on a new TRD skid plate on, i am thinking of trimming it and putting it back on my sport...

 

The dam doesn’t work with the TRD skid?

 

No its longer. just go back and look at post #64 the guy cut his out to fit.

 

I’m in Irvine

 

I was asking how highway handling was determined, not mileage. @TD90S just mentioned it and I was curious in normal traffic how a driver could tell an air dam really helps make a truck handle better.

I've got my MPG log books for my current and previous truck back to 2000. That's something I've done for a long time for all of our vehicles. I found watching your rolling mileage average is a good indicator of developing problems as well as finding gasoline brand/octane/additives that it likes.

It seems it shouldn't have as much effect on lift coefficient at the speeds we're talking but I'm also not familiar with vehicle dynamics. I originally said downforce, but that may not be the right way to say it. In any case reducing drag and increasing downforce is what designers are after.

It makes complete sense that an air dam should help reduce drag of a truck with such a complex underbody. The air under our trucks is turbulent, no question of that. Yet reduced drag doesn't have to mean proportionally decreased lift. I thought the surface on top of a vehicle rather than the front had more to do with how much it wants to lift (thinking of the truck as an airfoil).

But clearly the air dam does quite a bit to lower pressure under the truck if it wanders noticeably less. It does make sense that it would create a low pressure zone immediately behind the chin spoiler, which seems like it would push the nose down and thus increase force on the front wheels.

 

@m603holden - "Anybody else put a dam on an Off-Road? Fak No!" *implying that would be unfathomable*

@Thegenerik1 - "Here's a photo of an Off-Road with a dam."

@m603holden - "I don't get it..."

@Thegenerik1 -


Lol. I'm just playin