Making the Ioniq slippier

[aerohead]

Originally Posted by Phase

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 change direction once I made it over the mountain pass. When I did the trip in June with a slight tail wind the whole way, I got almost 700 miles of range out of the tank. The very high mpg I was getting the other day was only a short flat section from la grande to baker city Oregon. Can’t really track much with the mpg and all the mountain passes the rest of the way

Yeah, 'conditions' can make all the difference. 'Spirit' has done over 900-miles on a tank, on three different outings.
Temperatures, topography, velocity, curves, wind, precipitation, corridor-effect, etc., can all conspire to produce 'outlier', 'back-swan' mpg. A laboratory is the only place we can definitively determine exact performance.

[Phase]

Originally Posted by aerohead

Yeah, 'conditions' can make all the difference. 'Spirit' has done over 900-miles on a tank, on three different outings.
Temperatures, topography, velocity, curves, wind, precipitation, corridor-effect, etc., can all conspire to produce 'outlier', 'back-swan' mpg. A laboratory is the only place we can definitively determine exact performance.

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 increase I continue.

I’m surprised more people aren’t aeromodding teslas. Electric cars are more sensitive to drag and range anxiety is real.

[aerohead]

Originally Posted by Phase

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 increase I continue.

I’m surprised more people aren’t aeromodding teslas. Electric cars are more sensitive to drag and range anxiety is real.

1) Those who own homes will charge at home, 50-weeks out of the year, and in daily commuting they'll always have range 'over-capacity.'
2) The only time range is an issue is, on out-of-town, holiday road trips, for two weeks.
3) With 'a better route planner', they can charge while taking a bathroom / coffee/ snack/ meal - break / or shopping etc..
4) Between Denton, Texas and California's West Coast, I saw mostly Tesla BEVs, and they were all doing 75-mph on I -40.I don't think range was an issue for them.
5) AeroStealth and his wife drove the Chevy Bolt that I've purchased, from Radium Springs, NM, to San Diego, California and back, no problem.
6) It's true that you can't drive 'mindlessly', like with gas or diesel, but it doesn't seem to be a hardship. Just time charge sessions to coincide when you'd already be taking a break from driving.
7) The BOLT will do 300-miles on charge if one is 'trying'.
8) My round trip today will be 14-miles.

[Phase]

Originally Posted by aerohead

1) Those who own homes will charge at home, 50-weeks out of the year, and in daily commuting they'll always have range 'over-capacity.'
2) The only time range is an issue is, on out-of-town, holiday road trips, for two weeks.
3) With 'a better route planner', they can charge while taking a bathroom / coffee/ snack/ meal - break / or shopping etc..
4) Between Denton, Texas and California's West Coast, I saw mostly Tesla BEVs, and they were all doing 75-mph on I -40.I don't think range was an issue for them.
5) AeroStealth and his wife drove the Chevy Bolt that I've purchased, from Radium Springs, NM, to San Diego, California and back, no problem.
6) It's true that you can't drive 'mindlessly', like with gas or diesel, but it doesn't seem to be a hardship. Just time charge sessions to coincide when you'd already be taking a break from driving.
7) The BOLT will do 300-miles on charge if one is 'trying'.
8) My round trip today will be 14-miles.

Electricity prices are slightly going up. It’s not free for most people. Plus when road tripping, public or superchargers are fairly expensive. In some places they cost more per mile than gasoline depending on what state you’re traveling thru.

Obviously I’m an exception and do countless long road trips. If I had a Tesla, my day trips from Portland to Salt Lake City would add 2-3 hours just for having to stop and charge almost 3 times along the way

[freebeard]

With enough 'conditions' ( caveats ) we have a chance to 'reconstruct' a specific event on paper, and see if we can obtain a 'fit', knowing attributions of specific features captured in other reportings.

In theory, there's no difference between theory and practice....

[mrme1983]

Originally Posted by Phase

Electricity prices are slightly going up. It’s not free for most people. Plus when road tripping, public or superchargers are fairly expensive. In some places they cost more per mile than gasoline depending on what state you’re traveling thru.

Obviously I’m an exception and do countless long road trips. If I had a Tesla, my day trips from Portland to Salt Lake City would add 2-3 hours just for having to stop and charge almost 3 times along the way

In the UK prices are going up, plus dealers are no longer buying back EV's and the second hand market is so slumped with fast depreciation owners are stuck with them. Occasionally a dealer will part ex but with....another EV

[Phase]

So I redid my rear box cavity fins and angled them in a little more with a heat gun and put rivet nuts in for better grip and less rusting. The rivets push the fins out just a tad and you can see a very very slight air slit in some parts. Is this an issue? Does it need to be fully “ air tight” or will sealing versus not sealing it completely make a difference since the boundary layer is thicker at the very end of the car?

Same goes with the wheel skirts. A few very narrow open areas but most air flows over the edge based on dirt patterns and all that. Again, also at the end of car with thicker boundary layer

Should I be concerned?

[freebeard]

If you are concerned, maybe a bead of latex caulk from the inside?

[aerohead]

Originally Posted by Phase

So I redid my rear box cavity fins and angled them in a little more with a heat gun and put rivet nuts in for better grip and less rusting. The rivets push the fins out just a tad and you can see a very very slight air slit in some parts. Is this an issue? Does it need to be fully “ air tight” or will sealing versus not sealing it completely make a difference since the boundary layer is thicker at the very end of the car?

Same goes with the wheel skirts. A few very narrow open areas but most air flows over the edge based on dirt patterns and all that. Again, also at the end of car with thicker boundary layer

Should I be concerned?

Technically, the presence of any surface discontinuity or void could allow for a pressure anomaly, created by the base pressure telegraphing through the opening, which in turn, might compromise the pressure recovery before it ever had a chance to take place.
There's no telling if 'difference' would show at the gas pump.

[Phase]

I’ll just put electrical tape over the slots then for max aero during this yearly Oregon to Florida road trip