Head to head

Topspin Cyber Blue 17 vs Volkl V-Pro 17

Cyber Blue 17 leads on 3 of 6 measurements. The widest gap is string friction, where V-Pro 17 is 14 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Topspin

Cyber Blue 17

Polyester · 17 ga

Volkl

V-Pro 17

Polyester · 17 ga

Stiffness lower = softer, kinder on the arm
18450th pct
18855th pct
Tension loss lower = stays where you strung it
4680th pct
4884th pct
Energy return higher = livelier, more free power
8413th pct
8520th pct
Spin potential higher = more spin off the string bed
5.159th pct
5.159th pct
Ball bite higher = grabs the ball harder
0.45760th pct
0.43246th pct
String friction lower = strings slide and snap back
0.09046th pct
0.08432nd pct

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.

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 Cyber Blue 17 at 52 lb

String V-Pro 17 at 49.2 lb 22.3 kg

Coming from V-Pro 17 at 52 lb

String Cyber Blue 17 at 58.1 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.

Cyber Blue 17 mains / V-Pro 17 crosses

Stiffness52nd pct · 1 measured
Tension loss81st pct · 1 measured
Energy return16th pct · 1 measured
Spin potential59th pct · 1 measured
Ball bite58th pct · 1 measured
String friction43rd pct · 1 measured

V-Pro 17 mains / Cyber Blue 17 crosses

Stiffness53rd pct · 1 measured
Tension loss82nd pct · 1 measured
Energy return17th pct · 1 measured
Spin potential59th pct · 1 measured
Ball bite48th pct · 1 measured
String friction35th pct · 1 measured

Open this in the hybrid builder

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.

Cyber Blue 17

~16 hours of play

V-Pro 17

~15 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Topspin Cyber Blue 17 Polyester17find18446845.10.4570.090
Volkl V-Pro 17 Polyester17$8.9918848855.10.4320.084

Add a third string Cyber Blue 17 in full V-Pro 17 in full