Abstract: An automatic method for controlling in current-mode a motor for assisting with pedaling on an electrically assisted pedal cycle equipped with a sensor that measures a resultant force on its pedal and gear mechanism is provided, including injecting a control current into the motor to generate an assistance torque and computing the value of the assistance torque; computing a value of the longitudinal resultant of the assistance torque by applying a second coefficient of proportionality to the torque value computed in the preceding step; measuring a value of the longitudinal resultant of the total torque; computing a value of the longitudinal resultant of the torque exerted by the cyclist; computing an average value of the torque exerted by the cyclist over a fraction of a crank rotation; computing the value of the assistance torque to be generated in the motor; and deducing the value of the current to be injected.

Abstract: A force measurement sensor includes a peripheral portion, a central portion, and a first frame connecting an upper section of the peripheral portion to an upper portion of the central portion. The central portion includes a seat intended to receive the outer ring of a bearing in order to mount a shaft in rotation about an axis Z. The frame includes a core enclosed by two arms which are substantially parallel to one another, such that the upper section of the peripheral portion, the upper portion of the central portion, and the two arms form a parallelogram.

Abstract: The invention includes a rim for a cycle wheel, having a U-shaped radial cross section, with two lateral sidewalls and a bridge connecting the sidewalls and located so as to be opposite an axis rotation of the wheel. The sidewalls each define a planar braking surface, adapted to cooperate with a brake pad. The height of at least one braking surface, measured radially, is not constant over the circumference of the rim and has at least one variation in height.

Abstract: A cycle wheel having a U-shaped radial cross section, with two lateral sidewalls located on opposite sides of a median plane of the rim and each demarcated by an outer surface facing away from the median plane, on the one hand, and a bridge connecting the sidewalls and including an outer surface facing toward the axis of rotation of the wheel, on the other hand. At least one median zone of the outer surface of the bridge, which has a transverse width measured perpendicular to the median plane and greater than 4 mm, is machined over the entire circumference of the rim.

Abstract: A method for manufacturing a cycle wheel rim having, in radial cross section, two lateral sidewalls and a bridge, the rim having an outer surface facing outward of the rim and defined by the bridge and by at least a portion of the sidewalls. The manufacturing method includes extruding a section; bending the section; assembling the ends of the hoop formed from the section by joining one to the another; drilling holes in the bridge for fastening the spokes; machining the entire outer surface in a radial plane and on at least a portion of the circumference of the rim.