Head to head
Head Fibergel Spin 16 vs Head Synthetic Gut 16
Synthetic Gut 16 leads on 3 of 6 measurements. The widest gap is ball bite, where Fibergel Spin 16 is 9 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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Fibergel Spin 16603rd
Synthetic Gut 16598th
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Fibergel Spin 16252nd
Synthetic Gut 16280th
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Fibergel Spin 16578th
Synthetic Gut 16531st
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Fibergel Spin 16185th
Synthetic Gut 16219th
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Fibergel Spin 16260th
Synthetic Gut 16232nd
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Fibergel Spin 16518th
Synthetic Gut 16562nd
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Fibergel Spin 16221st
Synthetic Gut 16243rd
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 Fibergel Spin 16 at 52 lb
String Synthetic Gut 16 at 47.0 lb 21.3 kg
Coming from Synthetic Gut 16 at 52 lb
String Fibergel Spin 16 at 57.5 lb 26.1 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.
Fibergel Spin 16 mains / Synthetic Gut 16 crosses
Synthetic Gut 16 mains / Fibergel Spin 16 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.
Fibergel Spin 16
~29 hours of play
Synthetic Gut 16
~31 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Head Fibergel Spin 16 Nylon | 16 | find | 169 | 25 | 93 | 3.5 | 0.409 | 0.117 |
| Head Synthetic Gut 16 Nylon | 16 | $3.50 | 177 | 24 | 93 | 3.6 | 0.394 | 0.110 |
Add a third string Fibergel Spin 16 in full Synthetic Gut 16 in full