Bike Braking Vibration Modelling and Measurement

Review on Research and Developments of Bicycle Brake Calipers using Natural Fiber

“…Then came the spoon and roller brakes. Spoon brakes are basically an evolved concave spoon-like shaped version of shoe brakes which fits the rounded tire section much better as it makes a fuller contact with the tire especially after the development of solid rubber tires with rounded cross sections [24]. The difference would only be the fact that shoe brakes were initially only curved in one plane only unlike spoon brakes [25].…”

Bicycle fork longitudinal vibrations induced by front braking

“…This suggests an influence of the brake's friction materials on the generation of fork vibrations. Indeed, stick-slip between pads and rotors was already identified as a notable cause of vibrations in bicycles in (Redfield, 2008(Redfield, , 2014. It is also noted that, while the simulations in (Skatulla et al, 2022) show that fork vibrations arise when the braking torque is applied in a step from zero to the maximum torque allowed by tire friction, but do not appear when the braking torque is applied following a lower step or a ramp, the experiments carried out within the present study indicate vibrations are generated even if the brake is applied gradually and up to a moderate degree (far from 'stoppie' or tire-friction limits).…”

“…As noted in (Redfield, 2008(Redfield, , 2014, different structural properties of components can act to promote or prevent the occurrence of stick-slip and consequent vibrations. Building upon this observation, a four-degree-of-freedom lumped-element model was devised with the aim of seeking a set of structural parameters that can reduce the sensitivity of the vehicle to different combinations of brake friction materials.…”