power curved crank bicycle-Power up 25%-30%

Опубликовано: 04 Июль 2026
на канале: celine Fu

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The complete technology explain
http://www.e-chien.com.tw/english/rep...

No upper dead cent Power Curved Crank
SGS Repoet-The torque for works due to the obvious improvement between 0～60 degree angle.

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peddaling time test
http://www.e-chien.com.tw/english/nig...