Chances are you’ve heard this term thrown around on the trail, at the bike shop, and in tech articles. But what really is brake modulation? Simply put, brake modulation is the extent to which you squeeze that brake lever. At one end of the spectrum, you have zero pull on the lever, tons of traction, and your wheel spinning freely. On the other end, your brakes are entirely locked up, your wheel is not spinning, and you have no traction at all.
Learning when to grab a fist-full of brakes or when to slowly apply pressure to the lever to come to a skid-free stop is a game-changer. We’ve got an exercise to help you dial in your modulation—perfect for days when you don’t have time for a big ride, or when you’re waiting for your friend to arrive at the trail. All you need is a gently-sloped road, grass hill, or double-track trail, and a selection of good-sized sticks to use for markers.
Choose your mark
Pedal up to the top of the slope and drop a stick to mark where you’ll start rolling in every lap, then roll to the bottom of the slope and drop a second stick to mark where you’ll be applying your brakes at the bottom. Make sure you’re giving yourself enough space to get some good speed going.
Lap 1
Start at the top of the hill and ride to your second stick, applying both of your brakes to stop as quickly as you can as soon as you get there. Drop a stick to mark where you’ve stopped.
Lap 2
Go back to the top of the hill and repeat the previous steps, except this time applying only your rear brake as hard as you can to skid. Notice the difference, and mark how far you’ve gone.
Lap 3
Repeat lap two, except this time, modulate your rear brake to prevent skidding. Drop a stick to mark where you’ve stopped. What you should see is that by applying the rear brake gradually you’re able to stop faster than when you grab it full-on. If not, go back to the top and repeat again.
Lap 4
Now that you’ve had a few rounds with the rear brake, it’s time to get comfortable with your front brake. Repeat the exercise a few times, grabbing your front brake only and marking where you’re stopping. You should notice that you’re beginning to stop faster than with only your rear brake.
The reason you stop faster using your front brake alone is because of physics. When the braking force (your front rotor and brake caliper) is in front of the mass (your body and your bike) the weight moves onto the front brake and creates a larger stopping force than when the braking force is dragging from behind the weight.
Final lap
Go back to the top and repeat the exercise again modulating both brakes at the bottom without skidding. Over the exercise, you should see an improvement in how quickly you come to a stop, and learn better control of your brakes.