Head to head
Poly Star Classic 17 (1.20) vs Weiss Cannon Silverstring 120
They split the measurements 3–3. The widest gap is string friction, where Classic 17 (1.20) is 26 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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Classic 17 (1.20)533rd
Silverstring 120581st
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Classic 17 (1.20)403rd
Silverstring 120378th
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Classic 17 (1.20)436th
Silverstring 120445th
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Classic 17 (1.20)646th
Silverstring 120587th
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Classic 17 (1.20)771st
Silverstring 120709th
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Classic 17 (1.20)433rd
Silverstring 120598th
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Classic 17 (1.20)641st
Silverstring 120579th
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 Classic 17 (1.20) at 52 lb
String Silverstring 120 at 57.0 lb 25.9 kg
Coming from Silverstring 120 at 52 lb
String Classic 17 (1.20) at 49.8 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.
Classic 17 (1.20) mains / Silverstring 120 crosses
Silverstring 120 mains / Classic 17 (1.20) 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.
Classic 17 (1.20)
~11 hours of play
Silverstring 120
~13 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Poly Star Classic 17 (1.20) Polyester | 17 | find | 167 | 62 | 79 | 4.0 | 0.362 | 0.090 |
| Weiss Cannon Silverstring 120 Polyester | — | find | 167 | 51 | 83 | 3.7 | 0.397 | 0.107 |
Add a third string Classic 17 (1.20) in full Silverstring 120 in full