Aero development continues for Toyota at Rally Estonia pre-event test

Toyota has been the first team to develop the Rally Estonia pre-event test, during this week. Elfyn Evans and Scott Martin started the test on Tuesday, and Kalle Rovanperä and Jonne Halttunen drove the Yaris WRC yesterday. Today, it was the turn for Seb Ogier and Julian Ingrassia and, like it happened last month in Central Finland, they have been again in charge of the aero development tests.

S.Ogier/J.Ingrassia, Toyota Yaris WRC, Rally Estonia 2020 pre-event test – picture by Igmar Matto

The team keeps working on the front aero package. Like in the Finland test, Ogier’s car included a couple of vertical fins on the upper front dive planes (marked in the upper circle of the picture below), this time in white. The goal is to better direct airflow towards the rear of the car, while preventing the interaction with the external, main airflow. In addition, the use of endplates would prevent the mixing of air from above and below the planes, thus increasing their efficiency.

S.Ogier/J.Ingrassia, Toyota Yaris WRC, Rally Estonia 2020 pre-event test – picture by Igmar Matto

But the car included a second modification, with a similar objective: the size of the vertical fin included on both sides of the splitter (inside the lower circle in the picture above) has increased, and now it closes almost completely the space, forcing air to flow upwards but not laterally. It prevents the interaction of air with the external, main flow, and it increases the efficiency of the dive planes. The picture below shows the differences in size between the original (left) and the new (right).

During the test, Ogier’s car has also used a small fin over the front bumper, ahead of the cooling air inlet. The goal could be to reduce the amount of air entering into the engine bay, or to protect the radiator and intercooler from the impact of small stones, very common in the road used for the test.

S.Ogier/J.Ingrassia, Toyota Yaris WRC, Rally Estonia 2020 pre-event test – picture by Igmar Matto

One of the curiosities of the test is that the car (possibly an old spec car) already included the original orifices on both sides of the car for rear brake cooling, as well as the new design inlets, located on top of the side protection.

S.Ogier/J.Ingrassia, Toyota Yaris WRC, Rally Estonia 2020 pre-event test – picture by Igmar Matto

Also, the car included in some runs the modified rear fender vents, usually seen when mud or snow is present in the road.

E.Evans/S.Martin, Toyota Yaris WRC, Rally Estonia 2020 pre-event test – picture extracted from MPL.ee/Powerstage video

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