Head to head
Double AR Twice Shark (1.25) vs Solinco Tour Bite 18 (1.15)
Tour Bite 18 (1.15) leads on 4 of 6 measurements. The widest gap is string friction, where Twice Shark (1.25) is 22 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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Twice Shark (1.25)177th
Tour Bite 18 (1.15)167th
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Twice Shark (1.25)297th
Tour Bite 18 (1.15)325th
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Twice Shark (1.25)480th
Tour Bite 18 (1.15)455th
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Twice Shark (1.25)472nd
Tour Bite 18 (1.15)438th
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Twice Shark (1.25)779th
Tour Bite 18 (1.15)693rd
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Twice Shark (1.25)467th
Tour Bite 18 (1.15)455th
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 Twice Shark (1.25) at 52 lb
String Tour Bite 18 (1.15) at 42.6 lb 19.3 kg
Coming from Tour Bite 18 (1.15) at 52 lb
String Twice Shark (1.25) at 58.3 lb 26.4 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.
Twice Shark (1.25) mains / Tour Bite 18 (1.15) crosses
Tour Bite 18 (1.15) mains / Twice Shark (1.25) 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.
Twice Shark (1.25)
~10 hours of play
Tour Bite 18 (1.15)
~13 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Double AR Twice Shark (1.25) Polyester | — | find | 143 | 64 | 80 | 5.7 | 0.494 | 0.086 |
| Solinco Tour Bite 18 (1.15) Polyester | 18 | $13.99 | 162 | 51 | 85 | 5.8 | 0.563 | 0.097 |
Add a third string Twice Shark (1.25) in full Tour Bite 18 (1.15) in full