A motorcycle without a front brake will not dive forward when the brakes are applied. In fact, the absence of a front brake would result in a different behavior when the brakes are used.
Typically, motorcycles are equipped with two brakes: a front brake and a rear brake. The front brake is responsible for a significant portion of the stopping power, often around 70-80%. When the front brake is applied, the weight distribution of the motorcycle shifts forward due to the deceleration force acting on the front wheel. This weight transfer compresses the front suspension, causing the front end of the motorcycle to "dive" or tilt forward.
Without a front brake, the weight distribution remains more balanced when the rider applies the rear brake alone. The deceleration force primarily acts on the rear wheel, resulting in compression of the rear suspension and a slight forward weight transfer. However, the effect is generally less pronounced compared to when the front brake is used.
It's important to note that using the front brake is crucial for efficient and safe braking on motorcycles. The front brake provides the most stopping power and allows for better control and stability during braking. Riding a motorcycle without a front brake significantly compromises the ability to stop quickly and safely, and it is generally not recommended.