Head to head
Prince Synthetic Gut 18 Duraflex vs Volkl Power-Fiber II 16
They split the measurements 3–3. The widest gap is string friction, where Synthetic Gut 18 Duraflex is 18 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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Synthetic Gut 18 Duraflex611th
Power-Fiber II 16638th
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Synthetic Gut 18 Duraflex198th
Power-Fiber II 16177th
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Synthetic Gut 18 Duraflex586th
Power-Fiber II 16623rd
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Synthetic Gut 18 Duraflex230th
Power-Fiber II 16206th
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Synthetic Gut 18 Duraflex139th
Power-Fiber II 16177th
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Synthetic Gut 18 Duraflex702nd
Power-Fiber II 16612th
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Synthetic Gut 18 Duraflex215th
Power-Fiber II 16193rd
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 Synthetic Gut 18 Duraflex at 52 lb
String Power-Fiber II 16 at 54.4 lb 24.7 kg
Coming from Power-Fiber II 16 at 52 lb
String Synthetic Gut 18 Duraflex at 49.9 lb 22.6 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.
Synthetic Gut 18 Duraflex mains / Power-Fiber II 16 crosses
Power-Fiber II 16 mains / Synthetic Gut 18 Duraflex 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.
Synthetic Gut 18 Duraflex
~35 hours of play
Power-Fiber II 16
~34 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Prince Synthetic Gut 18 Duraflex Nylon | 18 | find | 162 | 19 | 92 | 3.6 | 0.374 | 0.104 |
| Volkl Power-Fiber II 16 Nylon | 16 | $14.99 | 159 | 21 | 92 | 3.2 | 0.405 | 0.126 |
Add a third string Synthetic Gut 18 Duraflex in full Power-Fiber II 16 in full