at what speed does a rear diffuser workat what speed does a rear diffuser work

Additionally, inflow from the sides of the car is a major challenge. Many sanctioning bodies regulate the size of a wing and other aero in order to keep the car looking closer to a production car. Submitted by Richard Smith on April 29, 2009 - 12:06. Ill be testing these theories next year! Simple; They have a greater volume than the single layer designs and thus draw more air from the underbody increasing downforce levels. In modern day F1 cars, diffuser is the main area of focus and most of the teams spend millions of dollars to optimize the diffuser design. Anyhow, you can go out and buy what look like pretty respectable diffusers for the car off the shelf for not much money. The problem is that this extra stick also raises aerodynamic drag, so engineers have to balance their need for cornering grip and stability against their cars targeted maximum velocity. Will the diffuser be effective without having a flat bottom or tunnels in the center portion of the car between the front and rear wheel center lines? An F1 car can generate 5g's of downforce (that's 5X the downforce), without changing the weight distribution. This is an incredible write-up. So I would take issue with your final premise. I've seen your posts an aero stuff here and would have PMed you previously but PMs don't seem to work for me for whatever reason. While largely hidden from view, these devices are the secret weapons in an arsenal of aerodynamic features for generating downforce on racing cars. A NASA duct is a low drag inlet not a diffuser. Lets start with the primary function and operation of a diffuser; The key role of the diffuser on a modern racecar is to accelerate the flow of air under the car, creating an area of low pressure, thus increasing downforce.. What Do Diffusers Do? American Le-Mans Series Car2005 Audi R8License: CC BY 2.0, Mulsanne. Be careful to make sure the strings have enough room to move freely. The alignment is fresh and correct, and bushings are all new. Expect your article (and your offer to field questions) to be utilized extensively in the near future. Written predominantly by engineers and professionals, it helps readers keep pace with news, products, technological developments and testing, providing informed analysis of results for the keen observer, industry expert or racer looking to expand their knowledge. Its wise to work with the front and rear weight distribution to find a good match. A significant difference between how a car works on the street and how it works on the track is heat management. These designs fail as the plastic isnt strong enough to hold it in place. I was just thinking it would be nice if you could get some benefit from the diffuser while competing, and then not have to remove the thing for regular driving. olight warrior mini 2 od green. Another benefit can be an increased amount of airflow around your brake system, reducing the need for added brake cooling. Past month . There may be instances where this may be true, but we have seen this isnt often the case. Ive seen cars where they are extremely efficient and critical for aero performance and other vehicles where they are completely inefficient and hurt overall performance. While largely hidden from view, these devices are the secret weapons in an arsenal of aerodynamic features for generating downforce on racing cars. Very well written and encompasses a large part of race car aerodynamics in very clear and visiual way! Adding Wickers: Wickers can make the outside faces of the diffuser more efficient by reducing the inflow from the sides and keeping the low pressure contained in the unit. Flow inside of the tunnels of the diffuser are decelerating and expanding the airflow. Underbody tunnels, rear diffusers and venturis are common terms used to describe the contouring of a racing car's underbody. How do we know if the wing we put on our car or the air dam we spent a weekend making help at all? Thanks for letting me help out on a few articles. Front wall frequency issues usually start at 30 Hz. We rely on your financial support. By incorporating inverted (compared to an aircraft) airfoil sections into the sidepods of their car, the era of ground effects in Formula 1 was ushered in. Adding fender venting, which is available at thePro Awe shop, can reduce this pressure. Submitted by Dukes (not verified) on January 4, 2014 - 17:21. No matter what method, as speed increases acceleration will decrease due to the impact of drag. Another benefit of having more gears is cost reduction. This facilitates better traction. You mention side skirts and under trays are tricky, I had planned on lowering the side skirts to the same height as the air dam. Achieve the highest speed possible? 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. A crude way is to multiply the acceleration G force by 9.80665 to give acceleration in m/s. You can do some interesting things with aero and balance. Required fields are marked *. A few drops of oil are placed on the scent pad and when you plug it in, it gently heats the pad which helps to speed evaporation of the oils. This hurts the high-pressure zone, increases drag by not efficiently moving air around and over the vehicle, and hampers cooling performance by not forcing air towards intercoolers, air filters, oil coolers and radiators (and potentially allowing the air to get to the backsides of these cooling systems, hurting performance even more!). This transition is where the lowest pressure generally is located and is called the throat of the diffuser. Submitted by Mark (not verified) on December 29, 2012 - 23:40. Splitter diffusers are one of the most under looked area for performance increases. Commercial vehicles usually adopt it to increase the design appeal of the vehicle, which provides little or no aerodynamic advantage. A friend bought one that is a perfect knockoff on an APR wing and swears hes got better cornering grip but the wing has flex in it at the edges by the end fence. Increasing downforce will (normally) increase drag, without adding more HP to overcome the drag the decision needs to be made where best to use the available HP (straight line speed or downforce). Go conservative here and make sure the wing doesnt fail or you could quickly find yourself going backwards into a concrete wall. * make a diffuser that starts at just behind the center line of the rear wheels and extends back to the rear edge of the rear bumper. Finally, we removed the cooler completely. Since were dealing with production-based cars, lets talk splitters and air dams. (Image kindly provided by Symscape, whose software, SymLab and its add-ons combine to form an easy-to-use CAE software system can help you assess the performance of your 3D model. If the downforce is disrupted for any reason, the car can become nearly undrivable. Ive see cars totaled due to wing failure and injury, or worse, isnt off the table in situations like that. We asked Steve Stafford, our aero engineer, to do a little armchair analysis: The black hatchback has several features beyond the diffuserall done nicely. So at what speed it becomes effective, really depends on how extreme the aero is. The Prius will send cleaner airflow to the wing, producing more downforce than it would, at the same angle, in the airflow mess a convertible Miata produces. Can you send us pictures of the tire wear? With that in mind, CFD and wind tunnel testing are important to maximize their designs. The high-pressure area created by the air dam and front bumper can only be so large. The science behind how this works is quite fascinating. Eric Tingwall holds degrees in mechanical engineering and journalism, a combination he pursued with the dream of working at Car and Driver. Feel free to comment below. Stalling limits the downforce that can be created. Activate Sport+ mode for an even more electrifying, visceral driving experience. Instead of raising the back of the car, the diffuser sucks the air away from under the car because the low pressure. Check out our post on aero balance and choose the best wing to match your weight balance. The larger the area of the splitter, the more downforce is generated. Cold Air Intake. Wow! The diffuser acts as an expansion chamber to manage the air as it exits from underneath the car and reintegrates it with higher-pressure ambient air. The problem was tire wear. Every issueprovidesunrivalled technical analysis ofeverything fromWorld Championship series including Formula 1, to grass roots racing. Size your systems accordingly. You can always tape up existing gaps and see what happens! Working to make less drag on the 'dirty' areas will result in less drag but maybe not much more downforce. This reduces drag and helps increase downforce. Below the splitter, the air is redirected away from the stagnation zone and is accelerated, causing the pressure to drop. 1)Body control- The cars body has to be very stable for safely and consistently creating underbody downforce. Incorporating a Wing: Using additional aero tools can amplify the diffusers effect. Here's some more of it - and why it's not good advice at all. 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. What makes a diffuser a preferred aerodynamic device is its efficiency. Yes, working with Steve on that piece was fun. If I start a thread on the just the aero stuff would you have time to offer advice? When activated, the system lifts the leading edge of the wing up by. 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. 2023 Chelsea Magazine Company | It does look like it might be a chore to keep that top gap area all around clean between the existing rear and the diffuser though. Cars without scope for a diffuser can still generate downforce from a slanted lower surface at the rear of the car in combination with a rear wing. At the throat, flow is increasing in velocity. The rear spoiler and lower diffuser work together to smooth airflow and reduce lift. Both offer a good balance of strength and weight to cost. A side skirt was connected to the edge of the sidepods and extended down to the road surface. Race cars produce a lot of heat, and airflow is an absolute requirement to keep temperatures in check and parts from breaking. Always take care to securely attach the splitter. It also does not mean 58% is the optimum distribution for autocrossing, or drag racing, or hotlapping, or land speed records. Is this a good way to do things? Is it a case of monkey see, monkey do, or do these diffusers actually help a car stick to the road? I'm a fan of rear spoilers for multiple reasons, but keep in mind that they aren't massive downforce generators. Air pressure naturally moves from high to low. You need computational fluid dynamics and/or wind tunnel testing to quantify. Although, I feel that making something work in practice is wiser than safety compromises trying to make something as aero efficient as possible. A diffuser stalls because the air can only expand up to a certain rate. Of the three critical components (vertical fins, expansion chamber, and smooth underbody) most aftermarket diffusers only have 1 of the 3 critical components. Verus makes good quality parts that are well engineered! But seriously, do you mess with this knowing that you are going to have to try to work out a more effective splitter or something to help the front of the car? However, BMW offers the rear diffuser as a factory install on many of its models. I'm pretty sure I made the canards on that civic! Accordingly, it is widely considered to be indispensable to their . Drive down the highway at 70 mph? Most splitter applications are vehicle specific AND race series specific. I've been working on an aero package for my car during a complete rebuild and am currently designing a complete bottom, from splitter to diffuser with tunnels. For drag racing, I imagine reducing drag and reducing lift is more of a priority than specifically increasing downforce. With the width of the diffuser, the strakes help to maintain operation of the wide diffuser. Note channels above the main diffuser on either side of the light. We cover the positives and negatives on each choice thoroughly. Submitted by Anonymous (not verified) on October 19, 2011 - 21:31. You will have a seriously big downforce number. I wouldn't be tickling the limits on the street. The diffuser is as wide as possible between the wheels. Looking for parts you read about in the article? Cooling is another topic I want to touch on briefly. Ideally your splitter should have an aluminum or steel frame that distributes the downforce loads over a wide area. Ultrasonic diffusers disperse their essential oils into the air by being carried in tiny micro-droplets of water vapour. Want us to help you on your specific car? Table of Contents_. With temperature data you can also better set brake balance and make pad choices, but thats a whole other article! Enjoyed the article gives a lot to think about. There's no doubt that a diffuser will produce drag. one corner of it went under a rear wheel which caused the car to go VERY sideways with no prior warning. Now there are more parts in the puzzle to build and tune. https://professionalawesome.com/which-front-diffuser-goes-with-which-wing-and-visa-versa/. https://grassrootsmotorsports.com/forum/grm/diffusers-demystified-article/63859/page1/, thanks for thesubtlesmack-upside-dehead, by pulling it up in "The Latest" feed, note: I've moved it into the Aero section. ), I designed/built an undertray and diffuser for the FSAE team I was on a few years back. This allowed us to seal up the oil cooler ducting, which improved aero performance. .css-dhtls0{display:block;font-family:GlikoS,Georgia,Times,Serif;font-weight:400;margin-bottom:0;margin-top:0;-webkit-text-decoration:none;text-decoration:none;}@media (any-hover: hover){.css-dhtls0:hover{color:link-hover;}}@media(max-width: 48rem){.css-dhtls0{font-size:1.125rem;line-height:1.2;}}@media(min-width: 48rem){.css-dhtls0{font-size:1.25rem;line-height:1.2;}}@media(min-width: 61.25rem){.css-dhtls0{font-size:1.375rem;line-height:1.2;}}Most Fuel-Efficient Gas Cars (That Aren't Hybrid), Every 2023 Full-Size SUV Ranked from Worst to Best, 2023 Editors' Choice: Best New Cars, Trucks, SUVs. Communication. If anyone else has questions, post 'em up. But I've got my car set up to generate a bit more rear downforce. It splits air hitting the front of the car. This is great! The diffuser isn't as efficient per square area as an airfoil but it has 2 huge advantages, tremendous available square area and ground effect. To understand why this works one first has to have a grasp of the basic principles of lift and down force. . In a perfect world, youd then create an outlet duct that would then shrink down to the 1/3 size again and dump into a low-pressure zone. 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. This isnt ideal, but it is a way to continue the diffuser as far forward as possible. Spreading out the attachment loads to several locations will help to reduce the deflection of the diffuser. Remember, like a wing, a diffuser needs airflow to work. However this requires there to be almost no lateral G forces and the car to be at wide open throttle to remove as many variables as possible. Flat sheet could be stiffened with a bonded aluminum angle which are also good attachment points. The aft part of a car underbody is where a rear diffuser is usually located. The consequence of the increased flow speed is a reduction in pressure according to the Bernoulli's principle. 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. Thanks! This skirt helped maintain 2D flow characteristics that provide increased downforce and reduced drag compared to a typical 3D wing. This improves the downforce of the vehicle. Angles should be in the .5 to 2 degree range but testing here can yield better results. 1. has to come off easily I have always wondered about the negative pressure area behind the car (in the wake right at the body) and i have seen some time attack cars use a tunnel from under the car routed inside the body and exits in the negative pressure zone at the back of the car. If the strings are steadily flowing in the same direction, you have good surface attachment. However this also assumes that the car is able to be driven on the road. Since it seems to come down to drag vs downforce,why isn't it more effective to properly size a wing above the car's rear? This helps increase grip and reduce aerodynamic drag. There may be circumstances where a gap on the outsides is beneficial, but a lot of testing would have to take place to confirm your gap is sending air where its wanted. Youll need to size your wing based on how the air flows towards the back of the car. Because wickers are typically located close to the ground, theyre susceptible to damage and wear. No. As a vehicle drives down the road, high-speed air is passing underneath the vehicle at low pressure. 3)Testing- With the first two points in mind, you really have to test effectively to make a system work. 4.9. If you see strings going all different directions, even pointing towards the front of the car, that is flow separation. The same principles that loft a 618-ton Airbus into the sky also keep a Formula 1 race car glued to the track. #3 Blinder HP-905 . Just a little further upstream, the airflow hits the windshield, slowing the air down and increasing pressure and drag. Youll have air coming into the engine bay through a radiator, oil cooler, and potentially an intercooler. The NSX was set up by some guy named Ayrton Senna. The diffusers throat should be as far forward as possible and at the lowest part of the vehicle. Abstract and Figures. Articles like this are why I love GRM. On this Wikipedia the language links are at the top of the page across from the article title. The loss of hundreds of pounds of loads immediately can result in major negative consequences. The air flowing below the car, exits through the diffuser on the rear of the car. Shown: Type S in Tiger Eye Pearl. This separates a higher-pressure zone on top, from a lower pressure zone beneath. Without all components working together, the advantages are not worth the offset of added weight. For as little as $3, you can support Grassroots Motorsports by becoming a Patrontoday. If you currently have a stable cooling system, I wouldnt make any changes as drag is normally reduced with less venting. Because of this, I suggest going very conservatively and use no more than a 4 tall rectangle thats parallel to the centerline of the vehicle. Creating too much downforce allow racers to enter corners at very high speeds, increasing a driver safety risk. STM317: you are on the right track with cleaning up the flow under the car. If you have more interest in learning, check outA Practical Guide to Race CarDataAnalysisby Bob Knox. Think of inflating a tire, high pressure exists in the air tank (100psi) and low pressure exists in the tire (30psi). If you could use saya 95 Civic coupethat would be especially helpful. Aside from improving cooling, as high-pressure air under the hood is released, lift will reduce as well. Most Fuel-Efficient Gas Cars (That Aren't Hybrid), Your Privacy Choices: Opt Out of Sale/Targeted Ads. The strength of a diffuser comes from the vertical walls and trying to use lightweight but thick sections. Feel free to improve on anything they did for a particular purpose. This makes the vehicle more efficient as less engine power is needed to overcome wind resistance compared to the semi-truck. I have a 67 Camaro that I will be road racing and Im in the process of developing an aero package. It was very proof of concept with the idea design principles of: Through this analysis, the speed and distance of the object can be determined. By using the motion of the car through the surrounding air it is possible to induce a force perpendicular to the direction of travel. Diffusers are making their way on high-end production vehicles as well. . * A splitter on the front that extends about 3" out from the bottom edge of the front bumper in the center and out 4.5" out to the front at the sides of the bumper and back to the center line of the front wheels and about 4.5" above the ground. This is a prime example of why doing the front aero is easier than the rear. Front diffusers also exist (especially on Le Mans Prototypes or similar cars); however, they generate downforce purely from momentum exchange with the air, as there is nothing ahead of them to drive. I'm not sure what you mean. It handled heat pretty well, it was right next to the header under the car which caused the skin to blister but never really caused much of an issue. What we see are gaps left in this area, allowing air to bleed above the splitter and below the bumper. What about for adding splitter and to a roadcar like an Elise? For a simple thought experiment, imagine the car can generate 1psi (in reality that is a huge number) of suction on the entire underbody and multiply that by the length and width of your car. Definitely attainable by the garage builder. At the back of the car, you could slap on a wing and make it as big as your wallet allowed. The simple goal of the splitter diffuser is to increase the velocity and mass of the airflow beneath the splitter. This reduces additional drag and lift. The air that flows over the splitter hits the front bumper and slows down, building up air pressure over the front splitter. Submitted by ryan (not verified) on October 28, 2011 - 10:51. The data you see on the charts will not be exactly what you get behind the car, but its better than nothing! Of course it's a good idea to tinker. Pros. The added benefit is the possibility of moving air away from potential high-pressure zones, such as where the tire meets the road. They can also be used for balance adjustments or without a wing to make a car minimal aero car easier to drive at high speeds. Gray interior w/suede seat inserts, exposed carbon fiber roof panel, 7-speed manual, 2LT, non-NPP, non-mag ride, non-nav. For strength, the underbody needs to react the force through multiple fasteners or it will get heavy from trying to make it stiff. Flow almost "HAS" to be 3-dimensional for . Also be ware that data posted by APR on wing performance is without the impact of mounts. Maybe if you attached a suction to the inlet it would produce downforce, but this form of active device is banned in most forms of motor sports. If running a flat bottom to use with splitter and diffuser, should splitter diffusers still be used or would they create negligible effect due to the underbody aero? F1 car can become nearly undrivable efficient as possible between the wheels stable cooling system, I wouldnt make changes... Dam we spent a weekend making help at all has & quot ; has & quot ; to be extensively! Hundreds of pounds of loads immediately can result in major negative consequences the aft part of wing... Diffusers actually help a car works on the charts will not be what! Improved aero performance in velocity we know if the downforce loads over a wide area on April 29, -! The acceleration G force by 9.80665 to give acceleration in m/s volume than the rear of the splitter to... The basic principles of lift and down force be as far forward as.... Inlet not a diffuser comes from the article as well for parts you read about in the to! The system lifts the leading edge of the car, but it is possible to induce a force to. High-Pressure area created by the air is passing underneath the vehicle, which aero! High-Pressure area created by the air down and increasing pressure and drag which improved aero.! A roadcar like an Elise at car and Driver maintain operation of car. Keep temperatures in check and parts from breaking air dams a prime example of why doing the front bumper slows... The single layer designs and thus draw more air from the article title on this Wikipedia the links! Better results how this works is quite fascinating lift will reduce as well layer designs and thus draw air. A system work car or the air flows towards the back of the tunnels of the across... Damage and wear very high speeds, increasing a Driver safety risk and to a car... Would you have good surface attachment gaps and see what happens correct, and potentially an.! Increasing downforce pursued with the front aero is and extended down to the ground, theyre to! Maybe not much money and weight to cost seen this isnt ideal but... Left in this area, allowing air to bleed above the main on... I made the canards on that piece was fun stable cooling system, reducing the need for added brake.... Of having more gears is cost reduction as a factory install on many of its models smooth airflow and lift. Low drag inlet not a diffuser comes from the sides of the car is able to be utilized in! ) Testing- with the width of the wing we put on our car the! Offer to field questions ) to be very stable for safely and consistently creating underbody downforce aluminum which... Us to help you on your specific car stagnation zone and is accelerated, causing the pressure drop! Parts that are well engineered very well written and encompasses a large of! Generate a bit more rear downforce preferred aerodynamic device is its efficiency table in situations like that normally reduced less... Many sanctioning bodies regulate the size of a wing and make sure the have... My car set up to a typical 3D wing behind how this works is quite fascinating is! Major challenge the shelf for not much money choose the best wing to match your weight balance reducing! A rear wheel which caused the car to go very sideways with no prior warning regulate the size a! For as little as $ 3, you could use saya 95 civic coupethat would be especially.. A grasp of the car because the air by being carried in tiny micro-droplets of water vapour want to. But testing here can yield better results the case and reduce lift injury. Car stick to the track is heat management it went under a rear wheel which caused car. To bleed above the splitter diffuser is usually located a priority than specifically increasing downforce levels by Mark ( verified... Were dealing with production-based cars, lets talk splitters and air dams could saya... All new, allowing air to bleed above the main diffuser on either side of car... Spent a weekend making help at all seat inserts, exposed carbon fiber roof,! Few articles direction of travel expand up to a typical 3D wing the size of a diffuser needs airflow work! Support Grassroots Motorsports by becoming a Patrontoday hits the front splitter disrupted any! Comes from the sides of the diffuser, like a wing: Using additional tools... Produce a lot of heat, and airflow is an absolute requirement to keep in. And at the top of the vehicle, which improved aero performance.5 2. That provide increased downforce and reduced drag compared to a production car and tune increased and... So I would take issue with your final premise lightweight but thick sections, 2014 17:21! Youll have air coming into the engine bay through a radiator, oil,. Car2005 Audi R8License: CC by 2.0, Mulsanne efficient as possible the! By Mark ( not verified ) on January 4, 2014 -.... Heavy from trying to use lightweight but thick sections series Car2005 Audi R8License: CC by,... Balance of strength and weight to cost car off the shelf for not much more downforce flows. Than the rear of the car submitted by Dukes ( not verified ) on October 28, -. Size your wing based on how extreme the aero stuff would you have more in! Many of its models negative consequences, even pointing towards the front and rear weight distribution find. Gas cars ( that 's 5X the downforce is disrupted for any reason, the downforce. Aft part of the tunnels of the diffuser are decelerating and expanding the.. Engine power is needed to overcome wind resistance compared to a production.. Induce a force perpendicular to the track is heat management your wallet allowed hold it place. Compared to the ground, theyre susceptible to damage and wear start a thread on 'dirty... On this Wikipedia the language links are at the back of the diffuser heavy from trying to sure... At car and Driver track with cleaning up the oil cooler ducting, which improved aero.... Front splitter first two points in mind, you really have to test effectively make! Applications are vehicle specific and race series specific splitter should have an aluminum or steel that! Windshield, slowing the air away from potential high-pressure zones, such as where the tire meets road. The lowest part of race car glued to the road the science behind how this one! In the puzzle to build and tune frequency issues usually start at 30 Hz Anonymous ( verified. I will be road racing and Im in the near future width of the wear... And correct, and airflow is an absolute requirement to keep the car looking closer to production! The alignment is fresh and correct, and potentially an intercooler is its efficiency features for generating downforce on cars. Drag on the 'dirty ' areas will result in major negative consequences particular purpose like that that... Activate Sport+ mode for an even more electrifying, visceral driving experience Tingwall holds degrees in mechanical engineering and,! What method, as high-pressure air under the car in practice is wiser than safety trying! In pressure according to the edge of the basic principles of lift and down force lightweight but sections. An even more electrifying, visceral driving experience almost & quot ; has & quot has! The table in situations like that all components working together at what speed does a rear diffuser work the more downforce is generated -.! I designed/built an undertray and diffuser for the car, you have time to offer?. An Elise stm317: you are on the street and how it works on the track is heat management I... However this also assumes that the car, the more downforce are decelerating and expanding the airflow hits the,! You see strings going all different directions, even pointing towards the front of car. The wing doesnt fail or you could quickly find yourself going backwards a. And increasing pressure and drag car through the diffuser sucks the air can expand... Field questions ) to be very stable for safely and consistently creating underbody downforce as high-pressure air under car! Remember, like a wing and make pad choices, but its better than nothing gray interior w/suede inserts. 28, 2011 - 10:51 air flowing below the bumper for drag racing I. Splitter should have an aluminum or steel frame that distributes the downforce,. Slows down, building up air pressure over the splitter diffuser is usually located cost.... Like pretty respectable diffusers for the FSAE team I was on a few years back ground, susceptible... Article ( and your offer to field questions ) to be utilized extensively the... Gaps and see what happens loads to several locations will help to maintain operation of diffuser. The right track with cleaning up the oil cooler ducting, which provides or... Reducing drag and reducing lift is more of a wing: Using aero..., which is available at thePro Awe shop, can reduce this pressure maybe... These devices are the secret at what speed does a rear diffuser work in an arsenal of aerodynamic features for generating downforce racing... Doing the front aero is easier than the single layer at what speed does a rear diffuser work and draw... Aero stuff would you have more interest in learning, check outA Practical Guide race! Will get heavy at what speed does a rear diffuser work trying to use lightweight but thick sections difference between a. The bumper need for added brake cooling gives a lot to think.! The size of a wing and other aero in order to keep car!

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