WET BIKE WITH SPEEDOMETER

摘要

PROBLEM TO BE SOLVED: To provide a wet bike with a speedometer sensor which is prevented from being caught in floating objects such as water plants and sea weeds to be immovable and in which durability is improved. SOLUTION: A speedometer sensor 1 to measure speed on the water from the value of an electromotive force generated by the action of electromagnetic induction is provided with a coil to generate magnetic flux and an electrode provided vertically to the direction of the flow of a fluid and the direction of the magnetic flux and is mounted to an underwater part of the wet bike 2.