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Search: Posts Made By: Phase
Forum: Aerodynamics 03-21-2024, 01:21 PM
Replies: 854
Views: 63,771
Posted By Phase
Exactly. Whenever I’m doing mods, even if they...

Exactly. Whenever I’m doing mods, even if they are minor or look dumb, I always ask “ even if I can’t tell if my mpg is getting better, is this mod increasing drag? “. As long as drag doesn’t...
Forum: Aerodynamics 03-18-2024, 12:45 PM
Replies: 854
Views: 63,771
Posted By Phase
The first half of the trip from Portland metro to...

The first half of the trip from Portland metro to eastern Oregon blue blue mountains was into a headwind. I was getting in the 40s for mpg that way, not to mention going up in elevation. The wind...
Forum: Aerodynamics 03-16-2024, 11:42 AM
Replies: 854
Views: 63,771
Posted By Phase
I’m just stating what happened. Windy app said 12...

I’m just stating what happened. Windy app said 12 mph tail wind and was around 4000 feet elevation in the eastern Oregon high desert. Overinflated low rolling resistance tires. Completely flat wheel...
Forum: Aerodynamics 03-07-2024, 12:19 PM
Replies: 854
Views: 63,771
Posted By Phase
The leading edge of the skirts bulges out the...

The leading edge of the skirts bulges out the most the rear drop tapers more towards the rear. Obviously they are providing some benefit by allowing attached flow and blocking all the wheel well...
Forum: Aerodynamics 03-02-2024, 01:58 PM
Replies: 854
Views: 63,771
Posted By Phase
Nope. Gas mileage was terrible the whole round...

Nope. Gas mileage was terrible the whole round trip due to crazy bad rolling resistance in snow and especially slush

I got my winter tires taken off yesterday and my low rolling resistance ecopias...
Forum: Aerodynamics 03-01-2024, 02:24 PM
Replies: 854
Views: 63,771
Posted By Phase
Building a tail for the Ioniq is out of the...

Building a tail for the Ioniq is out of the picture with 200,000 miles on it already. I’ve just been playing with the idea. When I get the new awd drive 2024 Prius, I will be 100 percent building a...
Forum: Aerodynamics 02-27-2024, 10:19 PM
Replies: 854
Views: 63,771
Posted By Phase
Dirty behind the wheels because of turbulent...

Dirty behind the wheels because of turbulent airflow or just road spray exposure or a combo of both? I don’t see that with the wheel skirts on, but jlis that because it blocks the ground dirt from...
Forum: Aerodynamics 02-25-2024, 12:32 PM
Replies: 854
Views: 63,771
Posted By Phase
Sadly it’s not street legal so I couldn’t test it...

Sadly it’s not street legal so I couldn’t test it on long flat interstate roads. I felt a little less drag though on the throttle when driving around some back forest roads though
Forum: Aerodynamics 02-22-2024, 01:16 PM
Replies: 5
Views: 225
Posted By Phase
How are these Asian cars getting almost the same...

How are these Asian cars getting almost the same drag as the vw xl1 without smooth wheel covers, fender skirts, mirror removal, and a boat tail?
Forum: EcoModding Central 02-22-2024, 11:17 AM
Replies: 51
Views: 1,915
Posted By Phase
Smooth underbody should be much easier to do on...

Smooth underbody should be much easier to do on the new Prius versus my Ioniq. Toyota does a better job at a smoother underbody straight out of the factory. Plus cat shield companies actually make...
Forum: EcoModding Central 02-15-2024, 12:24 PM
Replies: 51
Views: 1,915
Posted By Phase
I wouldn’t get the plug in. It has terrible mpg...

I wouldn’t get the plug in. It has terrible mpg once the battery is drained. YouTube videos show it getting about 40-45 mpg on the interstate

The 19 inch wheel Prius non plug in gets about 45 mpg...
Forum: Aerodynamics 02-13-2024, 10:38 PM
Replies: 15
Views: 3,446
Posted By Phase
Can’t panel gaps also act as mini vortex...

Can’t panel gaps also act as mini vortex generators and accelerate the flow?
Forum: EcoModding Central 02-13-2024, 10:36 PM
Replies: 51
Views: 1,915
Posted By Phase
I’d be getting ecopias. Idk what they come with...

I’d be getting ecopias. Idk what they come with but def would do low rolling resistance tires

Lighter wheels in city means less unsprung weight
Forum: Aerodynamics 02-11-2024, 12:38 AM
Replies: 15
Views: 3,446
Posted By Phase
Sealing panel gaps does nothing due to the...

Sealing panel gaps does nothing due to the boundary layer. Many people have tested it. No difference. Can’t measure it. Maybe slightly when going over 200 miles per hour but still won’t make a diff...
Forum: EcoModding Central 02-10-2024, 11:15 AM
Replies: 51
Views: 1,915
Posted By Phase
Well that’s nice to know it helps drag too I...

Well that’s nice to know it helps drag too

I plan on getting the awd Prius and it takes a 2 mpg hit for both city and highway versus the front wheel version

Switching from the stock 17s to some...
Forum: EcoModding Central 02-04-2024, 06:46 PM
Replies: 51
Views: 1,915
Posted By Phase
https://www.caranddriver.com/features/a15130598/up...

https://www.caranddriver.com/features/a15130598/upsized-wheels-tires/

They did a test and showed better gas mileage with smaller wheels. Kept tires identical accords the board
Forum: Aerodynamics 02-02-2024, 11:30 AM
Replies: 15
Views: 561
Posted By Phase
Give it a few years and we will have automatic...

Give it a few years and we will have automatic full wheel flares for the front and back. A more refined front deflector and then a boat tail that drops down behind the wheel too at highway speeds
Forum: Aerodynamics 02-01-2024, 11:32 AM
Replies: 15
Views: 561
Posted By Phase
They look pretty far ahead of the wheels too and...

They look pretty far ahead of the wheels too and there are already normal deflectors there so the double deflectors looks a bit goofy in my opinion.
Forum: Aerodynamics 01-31-2024, 01:56 PM
Replies: 15
Views: 561
Posted By Phase
Hyundais 2024 new ACTIVE AIR SKIRT

Hyundai is going to essentially add deeper and curved front tire deflectors that drop down at higher speeds and reduce drag by 3 percent and increase downforce and stability.

Seems like a lot of...
Forum: EcoModding Central 01-30-2024, 09:34 PM
Replies: 51
Views: 1,915
Posted By Phase
Smaller wheels highway question?

People claim that bigger and heavier wheels help with highway gas mileage because of inertia

If that’s true, then why are all of the epa highway numbers better with trims that have smaller wheels?...
Forum: General Efficiency Discussion 01-30-2024, 02:51 PM
Replies: 8
Views: 721
Posted By Phase
I’ve seen a bigger improvement than 3 percent...

I’ve seen a bigger improvement than 3 percent when switching to low rolling resistance tires. Then again that’s switching over from winter tires versus generic all season or summer tires
Forum: EcoModding Central 01-27-2024, 06:02 PM
Replies: 12
Views: 557
Posted By Phase
i think you should try the new blizzak ws90s...

i think you should try the new blizzak ws90s then... they turn snow into asphalt. i purposely tried to drift them a few weeks ago and even with slamming the brakes and yanking the steering wheel, the...
Forum: EcoModding Central 01-26-2024, 03:39 PM
Replies: 12
Views: 557
Posted By Phase
depends on what tires your using. plenty of...

depends on what tires your using. plenty of youtube videos testing and showing that with summer or all season tires, lowering the pressure to be super low like 16psi helps in fresh snow. but if you...
Forum: Aerodynamics 01-25-2024, 05:50 PM
Replies: 11
Views: 476
Posted By Phase
Isn’t the purpose of that steep spoiler lifting...

Isn’t the purpose of that steep spoiler lifting up for downforce? Hence when they mentioned it for dufferent driving conditions?
Forum: Aerodynamics 01-23-2024, 03:19 PM
Replies: 13
Views: 643
Posted By Phase
So flat horizontal spoiler, low drag. Up spoiler,...

So flat horizontal spoiler, low drag. Up spoiler, more downforce
Showing results 1 to 25 of 441

 
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