Head to head
Pacific X Force 16L (1.29) vs Yonex Poly Tour HS 16 (1.30)
They split the measurements 3–3. The widest gap is string friction, where Poly Tour HS 16 (1.30) is 34 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.
Measured, side by side
Bars are percentile against all 791 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.
Which one wins, by problem
Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.
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X Force 16L (1.29)406th
Poly Tour HS 16 (1.30)319th
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X Force 16L (1.29)571st
Poly Tour HS 16 (1.30)556th
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X Force 16L (1.29)227th
Poly Tour HS 16 (1.30)228th
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X Force 16L (1.29)453rd
Poly Tour HS 16 (1.30)451st
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X Force 16L (1.29)289th
Poly Tour HS 16 (1.30)341st
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X Force 16L (1.29)243rd
Poly Tour HS 16 (1.30)185th
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X Force 16L (1.29)425th
Poly Tour HS 16 (1.30)438th
Swapping between them: what tension?
Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.
Coming from X Force 16L (1.29) at 52 lb
String Poly Tour HS 16 (1.30) at 53.4 lb 24.2 kg
Coming from Poly Tour HS 16 (1.30) at 52 lb
String X Force 16L (1.29) at 50.6 lb 23.0 kg
Hybrid: what if you used both?
Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.
X Force 16L (1.29) mains / Poly Tour HS 16 (1.30) crosses
Poly Tour HS 16 (1.30) mains / X Force 16L (1.29) crosses
Which goes dead first?
Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.
X Force 16L (1.29)
~29 hours of play
Poly Tour HS 16 (1.30)
~27 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Pacific X Force 16L (1.29) Polyester | 16L | find | 220 | 25 | 89 | 4.4 | 0.476 | 0.108 |
| Yonex Poly Tour HS 16 (1.30) Polyester | 16 | find | 214 | 28 | 88 | 5.0 | 0.431 | 0.087 |
Add a third string X Force 16L (1.29) in full Poly Tour HS 16 (1.30) in full