Using Kerbs to Your Advantage

Drivers are constantly trying to push the limits, aiming to lower their lap times and by utilising kerbs in the right manner can drastically improve on-track performance. Aside from the fact that kerbs signify how far a driver can push until their kart exits the circuit, there is more than meets the eye. In today’s article, under a microscope we will look at how kerbs can be used in your favor.

Understanding Kerbs

Source: KartPulse

As mentioned earlier, Kerbs (or curbs) are raised sections on the edges of the track that mark the boundary of the racing surface. They are embedded with a red and white paint (can sometimes be different colors), fleshed out in a stripe pattern to mark the limit of the track. Drivers will notice kerbs on the entry and exit of a corner.

These markers can play to a driver’s advantage. First, it extends the racing line by giving drivers more width on the circuit, which reduces the need for steering while also allowing the kart to carry more speed. While it may be a bumpy ride, kerbs when hit correctly can gain drivers a few extra tenths to go faster.

Drivers can use the kerbing as a braking marker, as they can look at what part of that kerb they are slowing down, which won’t move from lap-to-lap. The apex is usually marked with kerb stripes, which also serve as a signal as to when the driver should get on the power again.

With all these in mind, how does one distinguish which kerbs to take which one shouldn’t? These answers are not set in stone, for it is the driver’s responsibility to figure it out. Each track and corner is different. Therefore, make sure to spend time learning where the kerbs are as well as their characteristics and dimensions. All of these play a factor into not just where the kerbs are, but more importantly how they affect the kart you are driving.

Once you’re at the wheel, practice what you have envisioned during the track walks. Try different lines and techniques during practice sessions to find what works best for you and what gives the fastest time possible. Make sure to also ensure your kart is ready to take the kerbs you plan to take. Put emphasis on the kart’s tyre pressures as these can affect how the kart handles and the chassis ride height, as hitting a kerb on the wrong angle will scrape the bottom of the chassis.

Taking Kerbs

Source: Formula Scout

Now that the kart is race ready, let us look at how you must maneuver the kart once you encounter kerbs.

1. Entry

Before entering the kerb, ensure that most of your braking was done in a straight line prior to turning. This gives ample time for the kart’s inside rear wheel to rise and help the kart turn. Keeping on the brakes while turning may result in a lack of grip or a loss of balance.

Make it a habit to also approach the kerb at a shallow angle. Avoid hitting the kerb at a steep angle as it can unsettle the kart and cause loss of control. Unless the kerb is pretty much flat, it is usually not worth the risk.

2. Riding the Kerb

As mentioned earlier, kerbs vary in size and length among many other things. In most cases, you don't need to fully mount the kerb. Aim to run the inside wheels over the kerb, allowing the kart to straddle the edge. This can provide better stability than fully mounting it. Next, keep your body relaxed but centered as balance is king when it comes to maintaining stability and grip in the kart. Shifting your weight slightly can help maintain balance and traction when turning.

3. Exit 

As you exit the kerb, focus on maintaining a smooth line back onto the track. Similar to when you entered the corner, avoid abrupt movements that can lead to loss of grip. Gradually apply power as you exit the corner and leave the kerb. Sudden acceleration can cause the kart to lose traction. The apex is usually the marker that drivers use as a signal when to gradually get on the power again. Remember that there are different types of apexes and it is up to the driver what is best to hit.

For our smaller drivers, kerbs may not need to be used. In some instances the lighter bodyweight, and COG (centre of gravity) of the driver doesn’t allow them to hit kerbs. It can drastically unsettle the kart, which then forces the driver to slow down more.

When to Take Kerbs

Kerbs are all created with unique dimensions, all of which vary in size, length, width, etc. All these factors combined play into a driver’s decision whether to take a kerb or not. It is usually advised that tall kerbs are to be avoided as being too aggressive with them can lead to damage to your kart or cause you to lose control. Track limits are also something to consider. Be mindful of the track's rules regarding kerb usage. Overusing kerbs or going beyond them can result in penalties.

Source: Red Bull

Conclusion

Kerbs can either be your best friend or your worst enemy. This is determined by how and when you use these red and white strips. To maximize performance and minimize damage, be sure to take track walks to know where the kerbs are placed and look for what part of the kerb the tyre marks are at, as this signifies to the driver where other karts have previously used the kerb. Be sure to also get a feel of how the kart responds to them once you are at the helm of the kart.

Lastly, always calculate the risk-reward of clobbering over the kerbs. At times they can give you extra performance and gain, while others may send you packing, ultimately ending your race weekend with a chain coming off.

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