At the last round of the Coupe de Montréal, we had few drivers which have been excluded from a session because they were underweight. Obviously some of them questioned the calibration of the balance.
Be assured that we always verify that the scale is working properly before the event begins. It can happen that we have problems with the scale when for example (CMTL # 3) a driver hooks the wires and pulls 1 or 2 of them. This is not a calibration problem.
Unfortunately, the problem usually comes from the competitor when he weighs himself after the morning practice or the day before during the practices. There are three common mistakes that drivers make with the scale. There is also a 4th less frequent one.
- The driver climbs on the scale too quickly after another driver has descended from the scale, not giving the scale time to reset, resulting in an erroneous weight that can reach several pounds.
- The only way to get the right weight is for the driver to sit in his seat so that the weight is evenly distributed over the four trays. Very often we see drivers who are in balance on a single tire. The scale can only measure well what is above and in contact with the trays.
- It also happens regularly that part of the contact surface of one of the tires is outside the plate, which distorts the results. When you use the scale freely outside of official sessions, ask your mechanic to check if the contact of the tires with the plates is okay.
All this mistakes mean that the driver can start the day with a weight that is not the real weight of their kart.
Finally. On very hot days, we can lose several pounds of sweat if we don’t hydrate properly.
When a scale has a calibration problem, it has the problem with everyone, not just with a few drivers.