Making the Ioniq slippier

[Phase]

Originally Posted by COcyclist

I have experimented with flush coroplast wheel covers. You can make a compass out of an old yardstick with a hole drilled for a screw to spin it in the coroplast and another hole for a sharpie marker. Cut them out with old fashioned tin snips. I used 3 wire ties each and just snipped them to remove them. I did a study of them if you search posts started by me. There was a slight improvement but I think I get more of an improvement from my homemade belly pan/diffuser.

I’ve seen that lower drag cars are more sensitive to changes than higher drag cars. Obviously my Hyundai Ioniqs base CD is 0.24 which is lower than even the Honda insight. Hyundai even made almost fully closed wheel divers for the “ blue” variant which has the highest rated mpg of all the trims. They used moon discs when going for the land speed record for a hybrid vehicle at the salt flats. So for this particular model, I’m assuming fully covered wheels are the lowest drag option. Looking at a lot of CFD study on spinning wheels, it’s not just the turbulence of wheel spokes adding drag, but even having a slight opening for brake cooling still has air coming out of the wheel area and it gets injected into the wheel wake and increases the wake size and turbulence. I have no idea how much of an mpg increase actually happens with closing up my 90 percent factory closed rims, but cfd shows better attached air flow, smaller wheel wakes, and increased base pressure at the rear. So in theory those things should help my cavity fins and rear fender skirts perform better.

[freebeard]

My solution:



Design from the 1980s, I made the Photochop in 2020. Directional louvers only suck, not blow. They could be innies or outies. but opposite right to left.

[aerohead]

Originally Posted by Phase

do you have a link to that test?

I'll see if my rat's nest will give it up.

[Phase]

Was taping over rims in Beatty Nevada at a gas station and some dude walked by and yelled “ yeah heat those brakes up!!!” It’s a hybrid with regen braking and all highway cruising in the open desert and not using physical brakes… dude probably drove a gas guzzling brick or non aero sports car

[aerohead]

Found the article:
' HOW DO YOU MAKE A ROAD TRIP IN A PORSCHE MISERABLE? EASY. HYPERMILE IT. OVERNIGHT. IN FLORIDA.' by Sam Smith, ROAD & TRACK, June, 2019, pages 48-through 57.
And I 'inflated' their 'build'. They just zip-tied cardboard to the wheels of the Porsche GT3 RS, along with a wing-delete, and painters tape sealing off all body openings except the radiator.

[Nathan jones]

Originally Posted by Phase

Was taping over rims in Beatty Nevada at a gas station and some dude walked by and yelled “ yeah heat those brakes up!!!” It’s a hybrid with regen braking and all highway cruising in the open desert and not using physical brakes… dude probably drove a gas guzzling brick or non aero sports car

No he walks. Keep up the good work

Also if you are investing in your vehicle alot make sure to keep an eye on rust in the long term, although in Nevada you shouldn't have too much of a problem

[Piotrsko]

Where in Nevade? Northern has most of the winter issues everywhere else has particularly above 4000ft MSL and they ain't shy about using brine.

[Phase]

Originally Posted by Piotrsko

Where in Nevade? Northern has most of the winter issues everywhere else has particularly above 4000ft MSL and they ain't shy about using brine.

i drove from vegas to tahoe

[Phase]

Final design of my box cavity fins that are tapered inwards. Will be cutting out abs plastic and mounting the final ones full time! Any thoughts before they go on the car forever?

[airbiteses]

hmm, you could put something flat in this place ...