Head to head
Double AR 666 (1.30) vs Tecnifibre Triax 16 (1.33)
666 (1.30) leads on 3 of 6 measurements. The widest gap is string friction, where 666 (1.30) is 16 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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666 (1.30)166th
Triax 16 (1.33)163rd
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666 (1.30)204th
Triax 16 (1.33)247th
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666 (1.30)545th
Triax 16 (1.33)510th
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666 (1.30)189th
Triax 16 (1.33)277th
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666 (1.30)248th
Triax 16 (1.33)283rd
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666 (1.30)378th
Triax 16 (1.33)214th
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666 (1.30)206th
Triax 16 (1.33)275th
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 666 (1.30) at 52 lb
String Triax 16 (1.33) at 52.0 lb 23.6 kg
Coming from Triax 16 (1.33) at 52 lb
String 666 (1.30) at 52.0 lb 23.6 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.
666 (1.30) mains / Triax 16 (1.33) crosses
Triax 16 (1.33) mains / 666 (1.30) 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.
666 (1.30)
~30 hours of play
Triax 16 (1.33)
~29 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Double AR 666 (1.30) Nylon | — | find | 162 | 24 | 93 | 5.8 | 0.491 | 0.085 |
| Tecnifibre Triax 16 (1.33) Nylon/Polyester | 16 | $16.46 | 162 | 25 | 90 | 5.8 | 0.532 | 0.092 |
Add a third string 666 (1.30) in full Triax 16 (1.33) in full