Making the Ioniq slippier

[Phase]

https://youtu.be/NfvtnpsCMFY

Upgraded high beams for those dark back roads. Wonder how much fuel 65w burns over 55w over time lol

[Phase]

We did it boys! 89 mph in Idaho empty interstate into a 14mph headwind with stronger gusts! First time getting the Ioniq into the 20s for mpg over a 50 mile course! No side mirrors either!

[Phase]

Just drove the same route back in Idaho. 6 mile per hour tail wind. Which isn’t that extreme. Cruise control was set to 88 but the light tail wind took a lot of engine load off at that speed, so my cars hybrid computer fully charged the battery, then switched to engine only mode without battery charging. Instant and average mpg hovered between 51-53 mpg over about a 20 min stretch till the wind changed. 51 mpg at 85-90mph is insane with just a baby tail wind. Really motivating me to build that small boat tail now

[freebeard]

If your concerned about the quality of the work, look to the custom car makers and their show-quality work.

Insofar as I know, at one time at the least, the top of the heap was Steve's Auto Restoration.

https://duckduckgo.com/?q=steve%27s+...oration&ia=web

There was a waiting list years long for whole cars, but they might be able to turn something around sooner.


www.hotrodhotline.com/pr/2011/stevesautofeb3/

[Phase]

My Ioniq doing it’s “ lean burn” thing. Only happens at high speeds. Drive between Colorado spring and Denver. 4 mpg cross wind. Corridor affect with slight slight down grade and smooth highway gives low engine load, so the engine charges the hybrid battery to the max and then it just starts cruising and locks into a certain mpg. It happens every now and then. But yeah, low drag and engine load at high speeds makes my car act different. Close to 60 mpg at 85 mph is pretty good with winter tires and 28 degrees outside I’d say…

[Phase]

quick doodle. not super artsy. mercedes eqxx inspired boat tail fused with the ioniq 6 EV mid spoiler concept

[aerohead]

I'd recommend that your new deck begin right at the upper trailing edge of the forward spoiler.
The 'second' spoiler is almost completely embedded within the turbulence of the forward spoiler, and only catches any air at it's sides.

[Phase]

Originally Posted by aerohead

I'd recommend that your new deck begin right at the upper trailing edge of the forward spoiler.
The 'second' spoiler is almost completely embedded within the turbulence of the forward spoiler, and only catches any air at it's sides.

Can you explain the Ioniq 6 then? Their website said the boat tailing past the spoiler still reduces the wake and the midway spoiler on their Ioniq 6 helps recover some downforce.

Plus I think months ago someone was saying to leave the spoiler since it acts as a gurney flap or something like that and creates vortices that’ll just reattach to the boat tail or box cavity anyways

[aerohead]

Originally Posted by Phase

Can you explain the Ioniq 6 then? Their website said the boat tailing past the spoiler still reduces the wake and the midway spoiler on their Ioniq 6 helps recover some downforce.

Plus I think months ago someone was saying to leave the spoiler since it acts as a gurney flap or something like that and creates vortices that’ll just reattach to the boat tail or box cavity anyways

* are they referring to plan-taper boat-tailing on the sides of the car? That WOULD reduce the wake, as well raise its pressure.
* On top of the car, all centerline flow is lost at the forwards spoiler.
* The secondary spoiler is almost completely in the turbulence of the forwards spoiler, except for it's outer edges. You can see it in the wind tunnel videos.
* The tearing edge of your spoiler is exactly at the aerodynamic streamlining template- # 3 contour. It's what guarantees flow reattachment on top of your car. It's nothing like a Gurney flap. Those are for direct downforce. You have no need of that. It's induced drag.
* The tearing edge of the OEM spoiler reaccelerates the flow, lowers the local pressure below 'adverse', provides only for reattachment, capturing a locked-vortex ( separation bubble ), which is what allows pressure recovery from the local streamline flowing over the 'bubble', creating higher base pressure, and drag reduction by 'mending' the flow.
* Your box-cavity, or boat-tail would just continue the imaginary contour defined by the template on top, the side plan-taper would respect what's already there, continuing the imaginary elongation contour there, and the 'slow' diffuser would reduce the wake from below.

[Phase]

Originally Posted by aerohead

* are they referring to plan-taper boat-tailing on the sides of the car? That WOULD reduce the wake, as well raise its pressure.
* On top of the car, all centerline flow is lost at the forwards spoiler.
* The secondary spoiler is almost completely in the turbulence of the forwards spoiler, except for it's outer edges. You can see it in the wind tunnel videos.
* The tearing edge of your spoiler is exactly at the aerodynamic streamlining template- # 3 contour. It's what guarantees flow reattachment on top of your car. It's nothing like a Gurney flap. Those are for direct downforce. You have no need of that. It's induced drag.
* The tearing edge of the OEM spoiler reaccelerates the flow, lowers the local pressure below 'adverse', provides only for reattachment, capturing a locked-vortex ( separation bubble ), which is what allows pressure recovery from the local streamline flowing over the 'bubble', creating higher base pressure, and drag reduction by 'mending' the flow.
* Your box-cavity, or boat-tail would just continue the imaginary contour defined by the template on top, the side plan-taper would respect what's already there, continuing the imaginary elongation contour there, and the 'slow' diffuser would reduce the wake from below.

so youre saying like this? it just seems weird for the sloped roofline to go down, then flatten out into the spoiler, then slope back down. a bit wavy?