I measured the rebound speed of Yinhe Mars 3 vs. Butterfly Flextra on a Yinhe N10 blade($50 setup)

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Mar 2016
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Hi everyone,

We wanted to see how two entry-level rubbers behave on a standard neutral blade (Yinhe N10). Specifically, we wanted to check if they are linear or if they have distinct "gears" at this price point.

We used a robot to feed balls at Low Speed (~13km/h) and Mid Speed (~21km/h) and tracked the inbound vs. outbound velocities.

The Data:

  • Blade: Yinhe N10 (All-wood)
  • Rubbers: Yinhe Mars III (Red) vs. Butterfly Flextra (Black)
Results:

  1. Low Speed: Both rubbers performed identically (Efficiency ~69-70%).
  2. Higher Speed:
    • Mars III: Efficiency increased. It showed a "catapult" effect relative to the input speed.
    • Flextra: Efficiency dropped. It dampened the speed, acting more like a brake.
Conclusion:
Even on a budget N10 blade, the Mars III behaves like a Tensor (non-linear), while Flextra is a distinct control rubber.

We made a short video showing the test clips and the data chart here:

 
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