Making the Ioniq slippier

[Phase]

Originally Posted by freebeard

I don't even know if they're pylons.

I presume standoffs for fasteners not in plane with the rest.

Examples of hat section. There would need be holes drilled to reinsert the bolts.

Look obviously figure out what they go into when I take the splash pad out. I’ll be tracing around the splash pad and then probably making it a little bigger to fill in more space and I’ll be cutting slightly smaller venting holes

[Phase]

So once I’m done with all my mods, is there a wind tunnel or computer scanning place or something I can go to get the new cd of my Ioniq measured and evaluated?

[freebeard]

aerohead will have the answer, next time he comes by.

He ran at Ogden, Utah in 2018 but that one is gone now IIRC.



I watched.

[Phase]

Originally Posted by freebeard

aerohead will have the answer, next time he comes by.

He ran at Ogden, Utah in 2018 but that one is gone now IIRC.



I watched.

well dang, ill be in ogden on wednesday! haha

[freebeard]

I remembered the name: Darko Technologies. Yay, me.

ecomodder.com/forum/showthread.php/baby-template-car-darko-2016-a-32673

[Phase]

Originally Posted by freebeard

I remembered the name: Darko Technologies. Yay, me.

ecomodder.com/forum/showthread.php/baby-template-car-darko-2016-a-32673

found their website. wonder how much they charge. apparently they focus on skiers too lol

[Phase]

updated rough draft pic of car with rear diffuser coming off backside of rear wheel skirts and also boat tailing behind front wheels

[Phase]

here is the underside of my gfs corolla hybrid

https://www.youtube.com/watch?v=tucSuk9RoVA

notice how toyota actually made a proper rear diffuser? the front belly pan is also a harder plastic than the cardboard like material hyundai used for my ioniq. smoother and less open holes too

i wonder why hyundai didnt do what toyota does? to cut costs? i know the ioniqs selling point was to be several thousand dollars cheaper than the prius, typically toyota costs more than hyundai because of the name only. i wonder if cost wise is why hyundai didnt do a rear diffuser and clearly made a much worse front belly pan...

[aerohead]

Originally Posted by Phase

So once I’m done with all my mods, is there a wind tunnel or computer scanning place or something I can go to get the new cd of my Ioniq measured and evaluated?

For the data cloud, I have no clue as to where you'd go for the laser scan needed for CFD. You might call graduate student advisers at schools around the country which support solar race car teams.
If you threw some money at the college or university, they might take your IONIQ on as a graduate research project. I helped Ken Lyons hook up with the Texas Tech University, College of Mechanical Engineering's Aerodynamics Laboratory, for scale-model wind tunnel testing of his Becker-Lyon, BMW land speed record motorcycle streamliner you may have seen on ESPN. They were pleased to have an interesting project, and some underwriting.
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The A2 Wind Tunnel in Mooresville, North Carolina would be the lowest cost, at $ 500 /hour. They can handle up to 30-square-feet ( 2.7809 meters-squared ) frontal area. It's a 'contour-wall / ceiling ' design, where CAR and DRIVER conducted their 'DRAG QUEENS' testing. If you'll call them, they have some very interesting things to say about comparative results with two other moving ground simulation tunnels. I'm not comfortable discussing it in public.
Their bigger sister, the Aerodyn Wind Tunnel, has a larger test section, wheel rotation, floor boundary-layer suction, and the facility for 124-data-port interface from the test vehicle.
Both tunnels provide for smoke-flow imaging. You need to bring your own videographer.
Call for Aerodyn pricing.
The Lockheed-Martin, Marietta, Georgia wind tunnel used to be open to all who could pay. Now that NASCAR is using the Gene Haas Racing Wind Tunnel, you might have a shot at getting in there. It was $1,800 / hour back in 1991. Gene Haas was $ 4,000 / hour a few years ago.

[aerohead]

Originally Posted by Phase

updated rough draft pic of car with rear diffuser coming off backside of rear wheel skirts and also boat tailing behind front wheels

The original spoiler conformed to a streamlined pathway, and simply extending it, at the downward angle it would project if you laid a straight-edge on the back of the car's centerline, theoretically, would suffice. Your up-kick design would over-accelerate the flow, lower its pressure, and kill it's direction towards the wake.
Below, just following the bottom of the rear quarter panels for the diffuser would put it at nearly an ideal angle for upsweep.
The August 2022 MOTOR TREND, PP. 70,71, has an article on the 2022, M-B EQXX. Mercedes-Benz is extending it's diffuser back almost 8-inches, while dropping down 3-degrees, above 35-mph, for a 10-count drag reduction.
I'm not trying to be a buzz-kill, but I see 'trouble'.