Head to head
Gosen Sidewinder 16 (1.31) vs Head Sonic Pro 17
Sidewinder 16 (1.31) leads on 4 of 6 measurements. The widest gap is string friction, where Sonic Pro 17 is 36 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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Sidewinder 16 (1.31)548th
Sonic Pro 17544th
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Sidewinder 16 (1.31)317th
Sonic Pro 17354th
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Sidewinder 16 (1.31)483rd
Sonic Pro 17462nd
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Sidewinder 16 (1.31)341st
Sonic Pro 17514th
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Sidewinder 16 (1.31)629th
Sonic Pro 17736th
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Sidewinder 16 (1.31)410th
Sonic Pro 17304th
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Sidewinder 16 (1.31)347th
Sonic Pro 17521st
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 Sidewinder 16 (1.31) at 52 lb
String Sonic Pro 17 at 51.6 lb 23.4 kg
Coming from Sonic Pro 17 at 52 lb
String Sidewinder 16 (1.31) at 52.4 lb 23.8 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.
Sidewinder 16 (1.31) mains / Sonic Pro 17 crosses
Sonic Pro 17 mains / Sidewinder 16 (1.31) 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.
Sidewinder 16 (1.31)
~16 hours of play
Sonic Pro 17
~12 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Gosen Sidewinder 16 (1.31) Polyester | 16 | find | 163 | 47 | 87 | 3.8 | 0.416 | 0.110 |
| Head Sonic Pro 17 Polyester | 17 | $8.25 | 165 | 55 | 84 | 3.9 | 0.342 | 0.087 |
Add a third string Sidewinder 16 (1.31) in full Sonic Pro 17 in full