04.30：增加旋转

照猫画虎，原作30轴，但降低跑分太多了，改为25轴，适合60-75左右跑分的玩具，实测降低3分左右

卡扣设计，拆装方便，且稳固

物料：

F683ZZ 法兰轴承 * 25

M3*14 销钉 * 25

The original version had 30 bearings, but it reduced the running score too much, so it was changed to 5-line 25 bearings, which is suitable for toys that run around 200-250FPS. The actual test results are about 10FPS lower.

Buckle design, easy to assemble and disassemble, and very stable

BOM:

F683ZZ flange bearing * 25

M3*14 pins * 25