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Browse all 791

Head to head

Dunlop Juice 17 (1.26) vs Gamma Zo Black Ice 18 (1.18)

Zo Black Ice 18 (1.18) leads on 4 of 6 measurements. The widest gap is energy return, where Juice 17 (1.26) is 13 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Dunlop

Juice 17 (1.26)

Polyester · 17 ga

Gamma

Zo Black Ice 18 (1.18)

Polyester · 18 ga

Stiffness lower = softer, kinder on the arm
20977th pct
20068th pct
Tension loss lower = stays where you strung it
4679th pct
4067th pct
Energy return higher = livelier, more free power
8957th pct
8844th pct
Spin potential higher = more spin off the string bed
3.927th pct
4.030th pct
Ball bite higher = grabs the ball harder
0.41634th pct
0.43145th pct
String friction lower = strings slide and snap back
0.10772nd pct
0.10874th 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 Juice 17 (1.26) at 52 lb

String Zo Black Ice 18 (1.18) at 51.7 lb 23.5 kg

Coming from Zo Black Ice 18 (1.18) at 52 lb

String Juice 17 (1.26) at 52.2 lb 23.7 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.

Juice 17 (1.26) mains / Zo Black Ice 18 (1.18) crosses

Stiffness73rd pct · 1 measured
Tension loss73rd pct · 1 measured
Energy return53rd pct · 1 measured
Spin potential29th pct · 1 measured
Ball bite36th pct · 1 measured
String friction73rd pct · 1 measured

Zo Black Ice 18 (1.18) mains / Juice 17 (1.26) crosses

Stiffness71st pct · 1 measured
Tension loss70th pct · 1 measured
Energy return50th pct · 1 measured
Spin potential29th pct · 1 measured
Ball bite43rd pct · 1 measured
String friction73rd 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.

Juice 17 (1.26)

~16 hours of play

Zo Black Ice 18 (1.18)

~20 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Dunlop Juice 17 (1.26) Polyester17find20946893.90.4160.107
Gamma Zo Black Ice 18 (1.18) Polyester18find20040884.00.4310.108

Add a third string Juice 17 (1.26) in full Zo Black Ice 18 (1.18) in full