ピンク色の摩擦車の位置によって減速比が変わります. 最大減速比は3,最小減速比は1/3です. The reduction ratio changes depending on the position of the pink friction wheel. The maximum reduction ratio is 3, and the minimum is 1/3. 0:00 3D view 0:37 top view 1:15 detail view X: https://twitter.com/S_CRAFT_0404 TikTok: https://www.tiktok.com/@s.craft_

