The Honda Bravo is a four-stroke 100 cc underbone class motorcycle designed and manufactured in the Philippines. The frame and engine of the Honda Bravo is the same as the Honda Wave 100 of Thailand,
Honda Bravo
A gear train or gear set is a machine element of a mechanical system formed by mounting two or more gears on a frame such that the teeth of the gears engage.
Transmission of motion and force by gear wheels, compound train
Illustration by Georgius Agricola (1580) showing a toothed wheel that engages a slotted cylinder to form a gear train that transmits power from a human-powered treadmill to mining pump
2 gears and an idler gear on a piece of farm equipment, with a ratio of 42:13 = 3.23:1
Bicycle with toothed belt drive to transmit torque from crank to rear sprocket