Aerodynamics - Page 2 - Toyota Yaris Forums

cali yaris · 04-24-2010, 02:09 PM

the midsection is pretty much fine as is. The rear could use some work, but will require some interesting bracket arrangements to work very well. I sell a front underpanel of our own design (but close to the BeatRush version). Test cars reported +1-2 mpg increases, so we know it has an effect even at "normal" speeds.

kngrsll · 04-24-2010, 05:01 PM

i think the biggest benefit to this car now would be to smooth the airflow under the car. It isnt fast enough to warrant a bunch of downforce creating devices. I think the best thing to do would removing drag.

Personally, i think the biggest gains would be: vent the rear bumper, create a rear diffusor, and finally a front splitter. I think a little chin on the front splitter would be a little helpful

TLyttle · 04-24-2010, 11:29 PM

I don't know for sure, but I suggest that the sedan is a better place to begin. The shape of the body (I think it is also lower than the 3-door, reducing frontal area, also important) gives a better departure angle for the air, possibly offset by the extra weight of the sedan.

As far as wings, spoilers, and all that frippery is concerned, the differences for most owners is cosmetic. Long experience has shown me that just a slightly better driver can more than offset any advantages wings/spoilers/diffusers may make. Drag is a larger concern than presented here, and you can prove it to yourself simply by coasting with and without said additions.

lilredrocket · 04-25-2010, 07:39 PM

The sedan is actually lighter than the hatch

AdeJong 03 · 05-10-2010, 12:54 AM

Quote:

Originally Posted by lilredrocket

The sedan is actually lighter than the hatch

i dont think this is true

i think the sedan has like 50-100 lbs more than the lb

kngrsll · 05-10-2010, 11:08 AM

nice job... i need to do something like that...

Jeemee · 05-12-2010, 12:50 PM

According to Toyota, using the 2010 models as reference, the 3 door hatch weighs 2lbs less than the sedan, which weighs 7 pounds less than the 5 door hatch. All manual transmissions. In order as mentioned: 2311 2313 2320

04-24-2010, 02:09 PM	#1
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	the midsection is pretty much fine as is. The rear could use some work, but will require some interesting bracket arrangements to work very well. I sell a front underpanel of our own design (but close to the BeatRush version). Test cars reported +1-2 mpg increases, so we know it has an effect even at "normal" speeds. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

04-24-2010, 05:01 PM	#2
kngrsll Apexing Egg!! Drives: 07 Toyota Yaris white hatch Join Date: Oct 2006 Location: Spartanburg, SC Posts: 872	i think the biggest benefit to this car now would be to smooth the airflow under the car. It isnt fast enough to warrant a bunch of downforce creating devices. I think the best thing to do would removing drag. Personally, i think the biggest gains would be: vent the rear bumper, create a rear diffusor, and finally a front splitter. I think a little chin on the front splitter would be a little helpful __________________ HighTach Motorsports 2007 Toyota Yaris-ARGH!! Mods: Tokico HTS, 6.6 kg F, 6.1 kg R custom springs, 23 mm RSB, 2-way TRD LSD, 15x7 +25 Team Dynamic wheels, 195/55/15 Dunlop Star Specs, Cobra Suzuka S

04-25-2010, 07:39 PM	#4
lilredrocket Slowy getting there View User's Garage Drives: 08 Liftback Join Date: Nov 2008 Location: DFW, Texas Posts: 1,464	The sedan is actually lighter than the hatch __________________

05-10-2010, 11:08 AM	#6
kngrsll Apexing Egg!! Drives: 07 Toyota Yaris white hatch Join Date: Oct 2006 Location: Spartanburg, SC Posts: 872	nice job... i need to do something like that... __________________ HighTach Motorsports 2007 Toyota Yaris-ARGH!! Mods: Tokico HTS, 6.6 kg F, 6.1 kg R custom springs, 23 mm RSB, 2-way TRD LSD, 15x7 +25 Team Dynamic wheels, 195/55/15 Dunlop Star Specs, Cobra Suzuka S

05-12-2010, 12:50 PM	#7
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	According to Toyota, using the 2010 models as reference, the 3 door hatch weighs 2lbs less than the sedan, which weighs 7 pounds less than the 5 door hatch. All manual transmissions. In order as mentioned: 2311 2313 2320 __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

04-24-2010, 11:29 PM	#3
TLyttle Drives: 07 Yaris sedan Join Date: Jun 2007 Location: Keremeos BC Posts: 986	I don't know for sure, but I suggest that the sedan is a better place to begin. The shape of the body (I think it is also lower than the 3-door, reducing frontal area, also important) gives a better departure angle for the air, possibly offset by the extra weight of the sedan. As far as wings, spoilers, and all that frippery is concerned, the differences for most owners is cosmetic. Long experience has shown me that just a slightly better driver can more than offset any advantages wings/spoilers/diffusers may make. Drag is a larger concern than presented here, and you can prove it to yourself simply by coasting with and without said additions.

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