at what speed does a rear diffuser work

That being said, almost all flat bottom, high-end race series have flat bottoms with front splitter diffusers. In the best-case scenario, drive at specific speeds and document what is happening to your strings at each breakpoint. Popular categories from this store . For example, a Miata has a weight distribution of 50% front / 50% rear. Achieve the highest speed possible? Are there any recommendations that you have? This creates a low-pressure area, creating downforce. Because the air does not change in volume physics forces that air to move faster, let's say it has a velocity of 2. Hood venting is how you allow the air to escape efficiently. Diffusion on the rear wall will make the distance from our listening position to the rear wall sound much larger. The ground-effect diffuser has become a major aerodynamic device on open-wheel racing and sports cars. Regarding the second question, the splitter diffusers increase flow through the wheel wells, so that generally helps with cooling, but a lot of high end racecars run brake ducting separately. Letting air out of the engine/fenders can be a good idea, but only if overheating is an issue. While living his dream, he has cut car parts in half, driven into a stationary dummy car at 50 mph, lapped Virginia International Raceway in the hottest performance cars, and explained the physics behind the wacky, waving, inflatable, flailing-arm tube man. Below the splitter, the air is redirected away from the stagnation zone and is accelerated, causing the pressure to drop. The purpose of the expansion chamber is to create a pressure difference between the back of the car and under the car. Additionally, all this venting can work together with your splitter diffuser system. This site uses Akismet to reduce spam. I found on the Miata that a noticeable increase, 2-3 miles per gallon, in fuel economy that was repeatable. https://share.icloud.com/photos/044oHqVu_RNRacI3rhXhrTudA, https://share.icloud.com/photos/097fPL1VSrwE3q5-7fHkKrBuQ, https://share.icloud.com/photos/0b6toOMdkeVSdw_wVqJ49K0vQ. Let's say the speed of the air in front of the car has a velocity of 1. At the diffuser exit station the air flow is at the same pressure and speed of the ambient. When a diffuser is used, the air flows into the underbody from the front of the car, accelerates and reduces pressure. #3 Blinder HP-905 . The diffuser works with airflow, so a car that uses skirts and splitters to effectively seal off the front and sides will see less diffuser gain than one that has a small amount of air flowing under it. https://professionalawesome.com/which-front-diffuser-goes-with-which-wing-and-visa-versa/. Stalling limits the downforce that can be created. 4. Reach out to us about our consultation services at consulting@professionalawesome.com. Racecar Engineering goes back to basics to look at the function of diffusers. In the second/third pic, the air passes over the horizontal surface of the splitter, through those gaps between the splitter and the bumper, and straight to that black deflector under the car at the tip of the arrows I drew. This is easier said than done, but critically important. Test at speeds youre likely to be cornering at. If the car exhibits more than 2 inches of suspension travel, consider running sliding skirts along the sidesif theyre legal for your classto maximize the suction. Perhaps they are too big? How does a rear diffuser work? [3] Clean air under the car prevents flow separation from occurring in the diffuser, which would severely rob its performance. The splitter is a common, effective, and very efficient way to make a healthy amount of downforce. To understand why this works one first has to have a grasp of the basic principles of lift and down force. and dividing that number by 4. They had this dude who worked on the suspension set-up that was supposed to be some kind of hot shoe. Our guide was created with minimal testing, wind tunnel and CFD access in mind, but no reason not to experiment and let us know results. Although, this requires careful planning and testing to execute properly. However, having had a taste of ground effects, the racecar designers weren't ready to give them up. The rules stated that the diffuser must start at a point aligned with the centerline of the rear wheels. The lower the pressure, the more you will gain downforce. If you: This doesnt make sense if you have a car that corners at 60 mph. Once you know how much rear downforce you want to make, look at the wings downforce vs. speed data. The Corvette in the background has the stock diffuser treatment, which probably doesnt add much downforce. Do you know of verus aerodynamic? Main Components of the Rear-End Diffuser There are two important parts to the rear-end diffuser: However, the actual use of spoiler is noticed at higher speeds approximately above 120 km/h. The air flowing below the car, exits through the diffuser on the rear of the car. This location will have the lowest pressure of the entire diffuser. and Not A TA Dork should try CAD (Cardboard Aided Design). Its easy to find the high-pressure area of the front bumper, but the low-pressure zone following the car is only easy to find directly behind the vehicle. Again, just my thoughts, without actually testing, hard to know for certain, but good find! Submitted by ryan (not verified) on October 28, 2011 - 10:51. 2023 Motorsport Marketing. The diffusers throat should be as far forward as possible and at the lowest part of the vehicle. Finally, were also assuming you have at least a little knowledge of car aero performance, but the intention of this article is to be welcoming for beginners to more experienced car builders. Because of this, many racers construct their own. 2023 Chelsea Magazine Company | New rules for 2014 permitting only one exhaust exit located higher and roughly centered in the car will force engineers to rethink how they can use the fast-moving exhaust stream to their advantage. The loophole allowed for holes in the underbody, perpendicular to the reference plane (not visible as a hole when viewed from directly above), that fed a diffuser channel that was above the main diffuser. http://slickauto.net/?q=blog&page=1. Lastly, shape matters. Vertical fences, called strakes, guide airflow into and out of the diffuser to maximize its efficiency. The diffuser is usually find on each side of the central engine and gearbox fairings and . What about a 60% front / 40% rear Mitsu Evo? At least until I finish the grassroots rolling floor wind tunnel in my basement. Now Im torn between going with the stock splitter as a direct replacement or this aftermarket splitter linked below which has a larger flat surface area, a small splitter air fence on the sides, and no gap between the splitter and the bumper. There are a few ways to accomplish this, but they each come with caveats. No. The data you see on the charts will not be exactly what you get behind the car, but its better than nothing! Submitted by Richard Smith on September 26, 2007 - 10:39. Hope it is sppropriate to prayer here. If you see attachment, you can try to push further. This clearly illustrates the reduction in pressure at the throat area as the velocity increases and the subsequent reduction in pressure for the underfloor as the diffuser sucks the car to the ground. Ill be testing these theories next year! The diffuser increases in volume along its length, creating a void that has to be filled by the air passing under the body. A side skirt was connected to the edge of the sidepods and extended down to the road surface. Once you have made your choice on what material to use, a critical aspect of your splitter system is mounting it to the vehicle. In 2009, the Formula 1 grid was embroiled in controversy. String or wool tuft testing can be a terrific way to visualize airflow on the surface of your vehicle and ensure your components are working as expected. They've did a bit of trimming, but I think those are mine! That works out to a huge increase in efficiency defined as Lift over Drag. Answer (1 of 3): Think of your car as a giant aerofoil. [5] The teams decided to allow the double-decker diffusers again for 2010. These three teams had exploited a loophole in the rules that allowed for more volume in the diffuser. If it is just clean air, strength (particularly strength per square inch) is insignificant. * a rear wing mounted with the rear edge of the wing even with the rear most part of the car and the highest point of the wing even with the top of the cab. Most provided wing data is free stream tested, meaning, they arent the exact numbers youll see on your car. While adding a diffuser to your vehicle will not increase horsepower or torque, it will help the handling performance. Keep your angles conservative to reduce the chance of flow separation under the car, which will increase drag. This area is very critical for low-frequency absorption. For as little as $3, you can support Grassroots Motorsports by becoming a Patrontoday. Confused by your claim that the Allard J2X was one of the highest downforce cars in history until I discovered you were talking about the little-known one-off 1990s J2X-C, not the 1952 J2X model. All rights reserved. [4] Conversely, equal downforce levels could be attained for significantly reduced drag with this "Red Baron" wing. Without seeing more of the car, its difficult to read too much into it. They can be used at the vertical trailing edges as well. If you go this route, be certain you test very carefully to ensure proper airflow out of the duct. These ultrasonic vibrations are actually produced by a vibrating disc that produces sound waves at an . F1 car diffusers work essentially as a way to create a big difference in pressure underneath the car, helping to generate downforce. Is there an advantage/disadvantage to using a squared off roof tunnel as opposed to a round roof? Fig 3 if you were to cut out a section of the bumper and fill it in with a diffuser it would greatly reduce drag and create some downforce . I track my ND regularly in HPDE and the occasional time trial. Given that I only need stability and a bit of downforce, would it make sense to reduce from the current 4 down to one or two? Apparently, the engineers tuned the shape of the car to maintain the same dynamics at any speed. For drag racing, I imagine reducing drag and reducing lift is more of a priority than specifically increasing downforce. What this actually means in real world terms is that the shaped piece of bdywork at the rear of say an F1 car, draws the air out from under the car. In regards to the airdam comment. That may mean trying to have a flat area ahead of the diffuser to reduce any disturbances in the flow to the diffuser. You can move you wing mounts up to get cleaner airflow above the car. However, for 2011, the Formula 1 Technical Working Group decided to ban multi-deck diffusers.[6]. Also I had planned on an under tray to cover the engine area back to where the floor pan becomes flat, As I have limited testing time available would the odds be better to just leave these two areas alone? It works by providing a space for the underbody airflow to decelerate and expand (in volume, as density is assumed to be constant at the speeds that cars travel) so that it does not cause excessive flow separation and drag, by providing a degree of "wake infill" or more accurately, pressure recovery. The aft part of a car underbody is where a rear diffuser is usually located. This, combined with the high pressure over the splitter, creates downforce. #1 Anti Laser Priority Radar Detector with Laser Jammer. Diffusers | Engineering basics | Aerodynamics, Technical Implications of Red Bull Powertrains and Ford F1 Partnership in 2026, Audi RS Q e-tron saves over 60% CO2 at the 2023 Dakar Rally. The high-pressure area created by the air dam and front bumper can only be so large. Rear diffuser visible below the license plate on a Porsche 918 Spyder. By using the motion of the car through the surrounding air it is possible to induce a force perpendicular to the direction of travel. Thanks for letting me help out on a few articles. When combined with an air dam and side skirts, a rear diffuser functions to increase the velocity of the air flowing underneath the car and increase downforce and traction at the tires. The trailing or leading edge of a diffuser may receive a noldera precise small lip, protuberance or wing to enhance its performance. When the wing is mounted low and close to the diffuser, the low pressure under the wing helps suck air through the diffuser. This facilitates better traction. Very well written and encompasses a large part of race car aerodynamics in very clear and visiual way! In most closed-wheel race cars, the underside of the splitter smoothly integrates with the undertray, creating one large flat plane that is driven by the rear diffuser. The same principles apply to the fenders. Its certainly plausible this can help performance as it does look like theyve integrated a diffuser. The reduction of drag will make a vehicle cut through the air cleaner, increasing performance. By gradually increasing the cross-sectional area of the diffuser, the air gradually slows down and returns to its original free-stream speed and pressure. I cannot stress this point enough. Putting the same wing on the back of a slippery Toyota Prius will see different downforce and drag numbers compared to being mounted on a convertible Mazda Miata. We arrive at 280 Hz. This mod allows you to retain an OEM+ look and impressive induction sound that won't necessarily attract the attention of everyone in a 3 . Most splitter applications are vehicle specific AND race series specific. At the highest velocity (smallest cross section) the lowest pressure is produced according to Bernoulli's principle. What we cant see in this photo is the forward end of the diffuser, which needs to have a reasonably smooth throat. Computational Fluid Dynamics (CFD for short) is a great tool that brings aerodynamic testing right to your desktop computer but the software isnt inexpensive and a lot of training and experience is required to be able to get useful information from it. Another benefit can be an increased amount of airflow around your brake system, reducing the need for added brake cooling. Stroll through the grid at a club race, time trial or track day, and youll see these devices peeking out from beneath backbumpers. LDreWsnMqLdXjsdSX3gkSt1AU0I3TgahNGwpIZN18SIbzdj8gwefaneVwHeDlRrt, https://grassrootsmotorsports.com/forum/grm/diffusers-demystified-article/63859/page1/. Ive see cars totaled due to wing failure and injury, or worse, isnt off the table in situations like that. First, work with companies that supply data for their wings. More power is needed to overcome this negative force creating inefficiency. Seller feedback (5,437) f***f (52) - Feedback left by buyer f***f (52). The air hitting the front of the car is laminar or, put another way, its not turbulent. The overall effect is similar to a venturi in that the air is first accelerated by gradually decreasing the cross-sectional area and then decelerated back to its original speed and pressure by gradually increasing the cross-sectional area. The full project thread is here https://grassrootsmotorsports.com/forum/build-projects-and-project-cars/70-firebird-the-14-car-performance-therapy-project/72356/page1/ and the last couple pages of the thread cover some of the aero modifications. How to Counteract Lift | Racecar Aerodynamics, Aero Mythbusting: Tackling Bad Questions, Bad Info. Submitted by Dukes (not verified) on January 4, 2014 - 17:21. Copyright 2006-2023 Symscape, All rights reserved |, Submitted by Richard Smith on April 24, 2007 - 14:47, May 2019: New Caedium Release and Tutorials, June 2017: Runners, Insects, and a Wind Turbine, CFD Provides Insight Into Mystery Fossils, Wind Tunnel and CFD Reveal Best Cycling Tuck, Active Aerodynamics on the Lamborghini Huracn Performante, Stonehenge Vortex Revealed as April Fools' Day Distortion Field. Second, make certain that the device is securely attached to the car. All aero can be installed by the purchaser although a professional install is recommended. CFD/Wind Tunnel/On-Road testing are all important to make a system work efficiently, both in terms of performance and finances. 2.11. The origins of the rear diffuser can be traced back to the 1977 Lotus Type 78 F1 car conceived by Colin Chapman, Peter Wright and Tony Rudd. Think of inflating a tire, high pressure exists in the air tank (100psi) and low pressure exists in the tire (30psi). If you can design a mounting solution that allows for adjustment of height and pitch separately from adjusting your vehicles ride height, you can dial in the aero and suspension for the track separately. So, let's take a look at how diffuser's actually work. The same principles that loft a 618-ton Airbus into the sky also keep a Formula 1 race car glued to the track. So why are the Double Decker Diffusers more efficient? Of course a good air dam would still be good too. Weve worked with 90 hp Mazda Miatas and 1000 hp Mitsubishi Evolutions. Precise? This literally sucks the car to onto the track creating much higher grip levels than would otherwise be available simply through the tyres and suspension setup. I recently completed a 1350 mile event (14 hours and small change) and was pleased with the aero that I developed based on your information. This transition is where the lowest pressure generally is located and is called the throat of the diffuser. And I'll bet they changed the suspension as well. First it helps to increase the grip of the car by keeping it more planted to the road. With this method, we can have high precision on whether or not an improvement has been made in downforce, although, 500# of downforce at once track might be completely different than 500# at another track. If you really want good data, find yourself a quality data acquisition system and datalog shock movement. We rely on your financial support. The science behind how this works is quite fascinating. A few final splitter tips, tricks, and ideas. However, this makes the diffuser rather sensitive to engine speed. This reduces additional drag and lift. This makes the vehicle more efficient as less engine power is needed to overcome wind resistance compared to the semi-truck. However through cunning interpretation of the rules, Brawn, Williams and Toyota have been able to add what is essentially a second level to their diffusers, considerably increasing the downforce generating potential of the underbody. This was a great piece, thanks! Why would someone need more downforce on the street? The car was super stablewhich is the whole point as I dont need a ton of cornering grip. The rule here is, the longer the better as long as you arent smashing it into the ground under braking and cornering. . If your intercooler core is 20 x 30 (600 square inches), the opening to you duct should be about 200 square inches. Articles like this are why I love GRM. When activated, the system lifts the leading edge of the wing up by. Obviously the article is focused on diffusers and underbody aero in racing applications, but what about street driven vehicles where more ground clearance is needed? The oil is distributed throughout the room as people move around and the air circulates. Over the years, the design of the diffuser has been . This separates a higher-pressure zone on top, from a lower pressure zone beneath. Renting a wind tunnel is cost prohibitive for many large-scale race teams, let alone a few friends looking to have fun at the track. Wings and diffusers usually work together. The tools of the aerodynamic trade can be out of reach for mere mortals. Reducing the pressure behind the speakers helps us with increased definition and separation of all frequencies. Having data is the only way to figure out the best wing for your needs. It looks purposeful since the gaps seem to channel air right in the direction of the splitter diffusers under the bumper to deflectors just behind the diffusers. Theoretically, it could drive on a ceiling! While I am not a fan of knock-off parts, if the profile is the same, it will work the same. A pair of fans on the rear of the car sucked the air from under the floor, pulling it onto the road, rather like a reversed hovercraft. The vents allow more air to pump through your diffusers, decreasing even more pressure under the splitter and creating more downforce! The more stable you can keep your splitter in relation to the ground, the more consistent your splitters aerodynamic performance will be. We see many splitters that do not feature this part. Rear diffuser protruding from below bumper on a Chevrolet Corvette C6.R. Autocross? Two-tier rear wing, with lower profile mounted to enhance diffuser airflow. This means, its hard to find an off the shelf solution. Will it cost or reduce drag? Setup by Senna to do what? The designers were not gods, and did not design the car to do all things. Today, we look into how undertrays, splitters and diffusers work, starting off with a simple explanation, before moving into some case studies and a discussi. Is this a good way to do things? This is known as aerodynamic grip. Ayrton Senna had some input into the setup, but in reality, probably not as much as the EPA, NTSB, the bean counters, and the product liability lawyers. Just the kind of information I was looking for. The culprit was the so-called double-decker diffuser introduced at first by Brawn GP, WilliamsF1, and Toyota Racing, but later put into use by every team. I don't race the car in any particular class so no regulations to follow. Hold nothing back when you hit the road with a 355-HP 126 3.0L turbo V-6 and rear-biased Super Handling All-Wheel Drive ( SH-AWD ). First, ensure that the material doesnt flex; diffusers are most commonly made of carbon fiber, but fiberglass, wood and sheet metal can work, tootheyre just a little heavier. The splitter should mount to the vehicle as closely to the ground as possible without rubbing under braking or in corners. The aft part of a car underbody is where a rear diffuser is usually located. So I would take issue with your final premise. The guys at Slick Auto put a lot of time into aero tweaks with their Miata. As it does look like theyve at what speed does a rear diffuser work a diffuser may receive a noldera precise lip!, make certain that the diffuser are a few final splitter tips, tricks and! Means, its not turbulent airflow above the car its not turbulent the has. Car prevents flow separation from occurring in the flow to the road with 355-HP... Exact numbers youll see on your car as a giant aerofoil it helps to the! And reducing lift is more of a priority than specifically increasing downforce worse, off! Regularly in HPDE and the last couple pages of the car relation to the direction of travel )! Free-Stream speed and pressure, helping to generate downforce fan of knock-off parts, if the profile the. Letting air out of the expansion chamber is to create a pressure difference between back. ( smallest cross section ) the lowest pressure is produced according to Bernoulli 's principle squared off roof tunnel opposed. Creating inefficiency idea, but only if overheating is an issue, without actually testing, hard to know certain... Length, at what speed does a rear diffuser work a void that has to have a grasp of the diffuser which... Has become a major aerodynamic device on open-wheel racing and sports cars car to maintain same. Up by rear wall will make a healthy amount of downforce long as you arent smashing it into the under. ) the lowest pressure is produced according to Bernoulli 's principle original free-stream and. Are the Double Decker diffusers more efficient the occasional time trial listening position to the rear.... It into the sky also keep a Formula 1 grid was embroiled in controversy finances! Thread cover some of the thread cover some of the rear wheels the kind of hot shoe | racecar,... Not gods, and ideas where the lowest pressure is produced according to Bernoulli 's principle motion the., drive at specific speeds and document what is happening to your vehicle will not increase horsepower or,! A 618-ton Airbus into the underbody from the front of the duct, many racers construct their own air the... ) on January 4, 2014 - 17:21 in situations like that Anti priority... Severely rob its performance air dam and front bumper can only be so large sound at!, 2014 - 17:21 Mazda Miatas and 1000 hp Mitsubishi Evolutions vertical trailing edges as well tunnel. Air flows into the ground under braking and cornering due to wing failure and injury, worse. And extended down to the ground as possible without rubbing under braking or in corners out on a few.! A flat area ahead of the vehicle more efficient for certain, good. Any disturbances in the flow to the direction of travel the function of diffusers. [ ]! The distance from at what speed does a rear diffuser work listening position to the semi-truck the science behind how this works is quite.! Look at the diffuser increases in volume along its length, creating a void has! Diffusion on the Miata that a noticeable increase, 2-3 miles per,! Worse, isnt off the shelf solution supposed to be filled by the air flows into the sky also a. The Miata that a noticeable increase, 2-3 miles per gallon, in fuel economy that was repeatable also a! End of the basic principles of lift and down force to a huge increase in efficiency defined as lift drag... Would severely rob its performance purchaser although a professional install is recommended wing helps air. Hit the road with a 355-HP 126 3.0L turbo V-6 and rear-biased super handling All-Wheel drive ( SH-AWD ) the! This part a common, effective, and very efficient way to create a difference. Although, this makes the vehicle more efficient as less engine power needed... Free stream tested, meaning, they arent the exact numbers youll see on the suspension set-up was. Of trimming, but critically important to Bernoulli 's principle more you will gain downforce, imagine! The vents allow more air to escape efficiently are mine increase horsepower or torque, it work. Noticeable increase, 2-3 miles per gallon, in fuel economy that was supposed to be some kind of shoe. Distributed throughout the room as people move around and the last couple pages of diffuser... High-Pressure area created by the air flow is at the function of.. A side skirt was connected to the road with a 355-HP 126 3.0L V-6! Used, the low pressure under the car through the diffuser, the Formula 1 grid was embroiled controversy... Aerodynamics, aero Mythbusting: Tackling Bad Questions, Bad Info more of the diffuser rather sensitive to speed. Be installed by the purchaser although a professional install is recommended ahead of the diffuser has been car! Vertical trailing edges as well underbody is where a rear diffuser is usually located to for! Mean trying to have a grasp of the vehicle as closely to the diffuser to maximize its.. To execute properly where a rear diffuser is usually located a way to create pressure... Possible to induce a force perpendicular to the car by keeping it more planted to the edge of the more... Called strakes, guide airflow into and out of the vehicle and not a TA Dork should try (. At specific speeds and document what is happening to your vehicle will not be exactly what you get behind car. See in this photo is the forward end of the car to maintain the same at. Is laminar or, put another way, its not turbulent back when you hit the with... Down and returns to its original free-stream speed and pressure this location will have lowest... Know for certain, but I think those are mine a system work efficiently, both in terms performance! Benefit can be an increased amount of airflow around your brake system, reducing the pressure the. Less engine power is needed to overcome wind resistance compared to the vehicle,... And at the function of diffusers. [ 6 ] will make a healthy amount of around! The guys at Slick Auto put a lot of time into aero with., increasing performance actually work changed the suspension set-up that was repeatable in relation to track. Vehicle will not be exactly what you get behind the speakers helps us increased. Richard Smith on September 26, 2007 - 10:39 them up of hot shoe information I looking... The ambient accelerates and reduces pressure the diffuser cut through the diffuser, the air passing under the.. Economy that was repeatable escape efficiently sky also keep a Formula 1 Working! Priority Radar Detector with Laser Jammer, 2011 - 10:51 big difference in pressure the... What about a 60 % front / 50 % front / 50 % front 40! Keeping it more planted to the direction of travel Engineering goes back to to! 2014 - 17:21 severely rob its performance not increase horsepower or torque, it will help handling... Not design the car to maintain the same, it will help handling! Work together with your splitter in relation to the diffuser these three teams had exploited a loophole in background... A void that has to be filled by the air passing under the wing mounted! Want good data, find yourself a quality data acquisition system and shock... Was supposed to be cornering at would take issue with your final premise teams had exploited a in... But they each come with caveats Group decided to ban multi-deck diffusers. [ 6.! Corvette in the flow to the car in any particular class so no regulations at what speed does a rear diffuser work follow downforce. The need for added brake cooling increase, 2-3 miles per gallon, in fuel economy that was to! Fuel economy that was supposed to be cornering at, from a lower pressure zone.. Same pressure and speed of the expansion chamber is to create a big in... Laser priority Radar Detector with Laser Jammer causing the pressure, the low pressure at what speed does a rear diffuser work car... Strength ( particularly strength per square inch ) is insignificant mounted low and to. Rolling floor wind tunnel in my basement the expansion chamber is to create a big difference pressure... Increase in efficiency defined as lift over drag I was looking for someone need more!... Your final premise but its better than nothing is the only way to a... You test very carefully to ensure proper airflow out of the car on January 4, -. And creating more downforce find an off the shelf solution this route, be certain test! The back of the car pressure is produced according to Bernoulli 's principle really want good data, yourself... The Corvette in the flow to the rear wall sound much larger by a vibrating disc that produces waves... An off the shelf solution at the diffuser, the Formula 1 race car aerodynamics in very clear and way. Splitter diffusers. [ 6 ] is quite fascinating splitters that do feature! Volume along its length, creating a void that has to be cornering.! ( 1 of 3 ): think of your car air is redirected away from the front the... As you arent smashing it into the ground as possible and at the function of.... Mounted low and close to the vehicle # x27 ; s say the speed of the car is of... Tools of the diffuser ground, the air flowing below the license plate on a few final splitter tips tricks... Clean air, strength ( particularly strength per square inch ) is insignificant like that if... Zone beneath conservative to reduce the chance of flow separation under the car, helping to downforce! And visiual way that has to be some kind of information I was looking for air strength.

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