| 摘要 |
The present invention provides a solid center type thread wound golf ball having long flight distance, while having good shot feel at the time of hitting the golf ball as good as liquid center type thread wound golf balls. The present invention thus provides a thread wound golf ball comprising a solid center, a thread rubber layer formed on the solid center, and a cover covering the thread rubber layer wherein, the solid center has a diameter of 33 to 38 mm, a ratio of surface hardness in JIS-C hardness to diameter of 2.15 to 2.50, and a ratio of center hardness in JIS-C hardness to diameter of 1.30 to 2.00, and the cover has a Shore D hardness of 40 to 65. Further, the solid center of the thread wound golf ball has a center hardness in JIS-C hardness of 50-75, and a surface hardness larger than the center hardness by not less than 10, and the thread rubber layer has a thickness of 1.0 to 4.0 mm.
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