Taking Your Braking to the Next Level

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  In the last blog post we focused on ABS. Today we’ll look at non-ABS brakes for track use. Techniques for braking on the track vary greatly depending upon the kind of race car you’re driving. Even though we’ve used the brakes all our lives, braking technique is critical for not only making passes in competition, but also lowering lap times and influencing how the car handles.

First, let’s look at brake pedal application. For cars with downforce (wings, diffusers, etc.) it’s critical to take advantage of all the extra grip high speeds provides. That means when it’s time to step on the brake pedal, don’t! Hammer that brake pedal like you want to destroy it! You can generate tremendous stopping power when you’re at high speed. However, as the speed rapidly bleeds off, you must also bleed off your brake pressure since you’re losing that downforce grip at slower speeds. Quick tip – Sledgehammer On, ease Off.

For cars without downforce, the technique is the opposite. You don’t want to dynamite the brakes as they will tend to lock-up. This is more of a squeeze the pedal on and rapidly ramp up the pressure until threshold braking is achieved. What’s threshold? The maximum braking force you can generate right before the moment of lock-up.

If you were to look at a graph of these two techniques, the former would show almost a digital zero-to-one on the upside and then ramping down from there. For the latter, it would be more like a parabolic curve ramping up.

Keep in mind that both of these techniques are for straight-line braking. Trail braking can still be used but you cannot apply maximum brake force. The laws of physics and vehicle dynamics still apply. The benefit of trail braking is that when you transfer weight forward, the reduced grip on the rear tires will help your car rotate into the corner.

One thing that you’ll do the same with both kinds of cars is to be mindful of “jumping off” the brakes. Work on the smoothness and timing of getting off the brakes so that you’re not inducing large amounts of understeer mid-corner. This, combined with a trail brake in and jump-off mid, can lead to the driver complaining about “it’s loose on corner entry and I have a big push coming off the corner.”

Lastly, use test days and practice sessions to push the limits not only on the racing line but off the line too so that you’re better prepared for potential passing spots during the race. Good luck and take your braking to the next level!

 

Copyright © 2021 Larry Mason

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