Original scientific paper This paper proposes a novel design of an 8-speed internal gear hub which consists of a distributed-flow-type planetary gear mechanism and a rotary gearshifting control mechanism. The distributed-flow-type planetary gear mechanism comprises two transmission units and one differential unit to provide eight forward gears. A clutching sequence table and a set of feasible s...

This paper provides an insight into the efficiency and accuracy of a multibody approach to model gear transmission error. The is based on augmented Lagrangian contact formulation considering surface-to-surface detection. case spur helical gears transmitting power between parallel shafts considered. static error computed without any assumptions about lines positions orientations. Tooth wheel bod...