Practical Corner Weighting: 3. Initial Corner Weight Measurement
3. Initial Corner Weight Measurement
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00:00 | - With the car and the equipment ready we can now move the car onto the scales and take our initial corner weight measurement. |
00:06 | What we want to do is start by rolling the car onto the scales, taking care to try and get the car located so that the tyres are as central as possible on each scale. |
00:16 | Once the car is centred on the scales, it's also a smart idea to apply the handbrake so that it can't roll off inadvertently and we want to ensure that the steering wheel is centred since even a few degrees of steering angle will affect the corner weight. |
00:29 | At this point you should be able to read off the corner weights from your display and you can record them as your starting point. |
00:36 | It's a good idea to keep a track of your changes to the corner weight, just like you track changes in alignment and we've attached a setup sheet to this module that you can use for this purpose. |
00:46 | If your scale system can automatically calculate the left weight, rear weight and cross weight percentages then you want to record these parameters too. |
00:55 | Alternatively you can calculate them manually as we've shown within the course. |
01:00 | Based on your starting point, you can then decide what changes to make. |
01:04 | In the perfect world to produce a car that handles the same in both directions, we'd like to have a 50% left weight and a 50% cross weight but particularly with the left weight percentage, as we've already discussed, it's likely you'll need to accept a compromise here if you're dealing with a conventional road car where the driver is offset from the car centreline. |
01:25 | The cross weight percentage is usually the area we'll be focusing the majority of our efforts on. |