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Professional Motorsport Data Analysis: Analyse Chassis

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Analyse Chassis

02.33

00:00 - In the previous module, we focused on analysing the driver technique and now the next step is looking through the data that relates more to the vehicle as a whole.
00:09 While acknowledging that these two are interrelated, using the driver debrief as a guide, review the data in the areas that the driver is complaining that they're feeling something they don't like about the way the car is handling.
00:21 As well as the areas of greatest time loss as required.
00:25 Make sure you check there's nothing the driver is doing to induce this in the first place.
00:30 Check for any brake locking throughout the run and if there is, see if there is a pattern with the place on track or the types of corners it's happening.
00:38 Establish if it looks like it's driver induced or if not, whether the brake bias might need moving to minimise locking.
00:45 If you have brake temperature data, check that you're not only in a safe temperature window.
00:50 but also one that is suitable for maintaining performance and consistency in the friction characteristics.
00:57 Pay particular attention to the minimum temperature at the end of the longest straight and the maximums in the heaviest braking zones.
01:05 In the mid corner, look for differences in the roll gradients to correlate against any spring anti roll bar or geometry changes relative to any changes you made in the previous run.
01:16 Take note of how much the roll gradient ratio moved for the changes you made.
01:20 Check corner entry, mid and exit in at least one high speed and one low speed corner.
01:29 Building up a database of how much this percentage changes for different setup options is useful.
01:34 Correlate this with differences in the steering trace and the driver feedback.
01:39 In the case that you're not making any damper adjustments, it's still useful to check the histograms against a known reference from the same track.
01:47 Particularly after the first run of the day.
01:50 This is more of a reliability type check to make sure that they're operating and are set correctly sine the last time you ran the car.
01:58 The left and right sides of each axle should look very similar in their distribution.
02:03 When you're doing damper tuning you should be comparing the data between runs to make sure the changes you're making show up by both a noticeable amount in the histograms and also in the way you expect.
02:14 THis is a good way to pick up errors in the adjustment which can happen if the wrong adjuster is used or if it's turned in the wrong direction.
02:21 Check the engine speed of the upshifts in each gear against your target values.