In this video i explain how box cavities work with better airflow seperation at the end, increased base pressure for less of a suction cup effect, and a smaller wake size.
If you had those precision cut and painted to match, they'd look absolutely amazing. It makes me sad manufacturers wont make subtle changes to the structure of the car or transmission for MUCH better mpg, but they'll totally ruin an engine in pursuit of 3mpg.
Amazing to see normal people try these things. I wish I had what it takes to even get started to experiment with all my ideas. One thing that bugs me a lot when watching aerodynamic videos is that is under the car, especially internal combustion engine cars , where it might need work to improve aerodynamics. Usually all the structures shapes under the cars are really rough and it might help to cover it up with some kind of plastic sheet or something to smooth out the flow of the wind under the car.
There are lots of videos of people doing aftermarket smooth bodies and how to with different materials. I would’ve done more of it but I don’t have a car lift or even car ramps so getting under the car is harder. My next car will definitely involve getting a “ cat shield” and then extending it a little farther down the exhaust channel for better aero and adding a smooth diffuser at the rear
Effectively it looks like it's a car equivalent to winglets on aircraft. Winglets on mid (biz jet) to large (airliner) size aircraft have exploded in the past ten years (or so) because of their aerodynamic benefits.
Dibond for the wheel covers and just an abs sheet for the fins. Made both mods out of cardboard and taped them originally to test them out and finalize the shape
I just missed the oppertunity to grab a 66hp, 16kWh, 60 mile range Citroën CZero (Mitsubishi i-MiEV) and reasearched aero mods. And that jelly bean was given practically zero attention to aero design. Or heat insulation... On a forum there was one post that made wind guards (like window rain guards) placed just above the front wheel well. Could be worth a try! I would love to know how you made or gotten the tappets, the material, etc
Are you sure you're Not adding " vortices' ? The design that works is shown in 8:05 . Yours doesn't taper in and the entire trunk needs to be attached to the sides. Without a proper ABABAB test confirmed at the same fuel pump, I doubt your 'mod' did anything besides add vortices.
It is tapered in. It’s not a perfect design but there are separation edges at the trunk spoiler lid and tail lights and so on. The rear pressure has increased. Rear stability seems better at high speeds too. I’ve measured gas mileage improvement but I do admit the overall design could be improved and isn’t perfect
why does the efficiency drop at 80 miles per hour? like at the end of the video you states that it goes down to 59mpg, which is what it is rated for, do yk why this happens
@@Zigzag5710 aerodynamic drag increases drag x4 when you got faster. Going from 40 miles per hour to 80 miles per hour doesn’t use double the horsepower and energy, but actually four times the horsepower and gas/energy
@@PhaseSkater oh damn, makes so much sense. thanks. i am also planning to do these mods except the rear view mirrors cuz thats too scary for me not to have. How do you live without them? thanks
They know it works and sometimes they fund studies and then do “ miniature “ versions of these mods. Remember, the goal of the automakers is to sell cars and make a car look good for your average consuming. People would rather buy a regular looking car that gets 40 mpg than a funky car that gets 80 mpg. It’s what makes it off the sales lot that matters, not the car mpg
@@ldsupra no. It has a lifetime warranty on the battery. Only issue I’ve had is that elevation changes sometimes trigger the check engine light to coke on because of the different oxygen levels but then it usually turns off after a day or two. Also build quality inside is cheaper plastic and sometimes rattles with loud road noise. Idk how the higher trims feel though. This is the base model with plastic insides and cloth seats.
@@PhaseSkater i was getting 50 to 60 mpg and got over 70 in 2015 avalon hybrid , a large luxry sedan with 80k+ miles. not driving slow, sport mode and bit more thna half the fuel level in exponentially quickening acceleration speed . not small trips. im not sure what optimal effiency fuel level actually is, but i got best results on average this way .
Now imagine what the never-reported 4-seater (1990's) EV range record-holding(373 miles) Solectria Sunrise could have achieved with those extended side aerofoils. The Sunrise was developed with help from DARPA and also had drag-cutting but only partly-covered rear wheels. It was also powered by NiMH batteries not by much more energy-dense lithium ion batteries. So if the Solectria had those extending side aerofoils AND a li-ion or LFP battery pack it could surely have achieved 500 miles on a single charge 25 years ago if the project hadn't been terminated in the early 2000's after oil-men Bush & Cheney moved into the White House instead of green Al Gore. Watch the Solectria Sunrise cruising on the open road in 1995: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EFI5f-NHPsI.html Paul G
Why shouldn't you be driving at 55 mph!? Just because the top allowable speed is 65 mph and the rest of the sheeple flock is driving faster!? At the end of the day, the time savings is negligible anyway!
I was almost getting rear ended by semi trucks and disrupting the flow of traffic. And I agree for short trips that going slower versus faster barely makes a difference by only a few minutes. But if you’re doing a road trip and driving 800 miles in one day, a few mile per hour difference can save you HOURS. Saving 5 bucks isn’t worth turning a 12 hour trip into a 15 hour trip for example.
@@PhaseSkater Maybe Daddy has already rear ended you!? 😁 So in other words, you easily get bullied and pushed around by some criminal semi-truck!? Need to have a dashcam to document their criminal behavior!
That’s a plug in. That’s cheating. That’s also for a short distance. If you had him drive the whole tank from full to empty in one trip, like Portland to Boise or something similar, the Prius prime would have a total readout of LOWER MPG than even a normal non plug in Prius
@@PhaseSkater And who are you to say what is cheating or not! I have an extensive background in many fields. What the heck is your background to say that????
That’s like saying a Tesla gets 300mpge. You’re also measuring an extremely short range with the battery charged. If you filled up and fully charged a Prius prime and then drove it nonstop from full to empty, it would be way lower than 100 mpg.
yeah im saying once the prime battery depletes, the mpg is worse than a normal prius. not good for long road trips, but great for city driving@@johncipolletti5611
