度假 Vacation

這禮拜我們將有新的產品要公開，目前正在製作中，敬請期待。
We have new product this week. It is being produced. Coming soon.

弄東西 Something are making now.

敬請期待  coming soon

陶瓷軸承 Ceramic Bearing

圖一　悠九製作的陶瓷軸承
Figure 1. Bearings by Yonitty.

　　這是悠九特製的陶瓷軸承，軸承的內外圈採用不鏽鋼製作，滾珠使用黑色的陶瓷材質（氮化硅），而保持器使用鐵氟龍。陶瓷軸承是所有軸承中阻力最小的，且保持器的特殊材質可以在滾珠高轉速轉動時分泌出油膜（塑膠為有機油類的大分子聚合物，而鐵氟龍是塑膠的一種），使軸承轉動更順暢。

    This ceramic bearing is specially made by Yonity. The materiel of outer race and inner race are stainless steel. The balls are made of silicon nitride (it is a kind of ceramics). And the retainer is made of Teflon. When the bearing is spinning, the Teflon retainer can provide a little lubricant film. It smooths the spin. A ceramic bearing gives it the least friction. It will be your best choice.

傑 coming soon

傑出的性能隱藏在簡約的外表下，低調且華麗的設計絕對是台灣溜溜球冠軍的最佳選擇。 

  傑已經在製作中了，敬請期待。

   We are manufacturing Jei now. Coming soon.

溜溜球是怎麼設計的? How did the yo-yo designed?

圖一　溜溜球的素描草圖
Figure 1. The sketch of yo-yo.

或許有很多玩家會很好奇我們溜溜球到底是怎麼設計出來的？這是一個非常好的問題。大部分的玩家都認為，設計溜溜球就像室內設計一樣，畫個漂亮的素描草圖（圖一），再把草圖實踐做出實體就好。實際上設計溜溜球完全不是這麼簡單的一回事，一般的溜溜球廠商都是採用一次做出多個樣本，再一一交給專業玩家測試，最後選出最好的樣本來量產。但這個方法是二十幾年前工程業界上所採用的方法，且非常的不科學。

How did the yo-yo designed? Most players thought that just like interior design. To draw a sketch (Fig 1.), and make it real. However, it is not so simple. Generally, most factories would make many yo-yos which are similar. And give those to the expert player to test. Finally, they would manufacture the yo-yo which the expert thought that was best of those. Even so, this procedure is not so scientific. This is the way of development about 20 several years ago.