| 摘要 |
PROBLEM TO BE SOLVED: To provide a general-purpose device for recording a wing surface shape of a propeller of an outboard motor of a racing boat, which is capable of surely recording a wing surface shape of a propeller so that the wing surface shape can be utilized for following boat races.SOLUTION: In order to record a shape of a wing surface of a blade 5B of a propeller 5 which led good scores or good feeling in past boat races, a small-diameter part 16A of a shaft part 16 of a wing surface shape recording device 15 is inserted into a hollow part of a propeller boa 5A of the propeller 5 from the side where a shear pin storage groove 5E is not formed, six adjustment screws 19 are moved vertically in prescribed angular positions so that lower ends of respective adjustment screws 19 and the wing surface of the blade 5B are not spaced from each other, and the vertical positions of the respective adjustment screws 19 are adjusted so as to follow the shape of the wing surface. |
