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Gosen

Poly Professional 17 (1.24)

Polyester Gauge 17 1.29 mm In production

Lab measurements for Gosen Poly Professional 17 (1.24), ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

169lb/in

lower = softer, kinder on the arm

Tension loss

45%

lower = stays where you strung it

Energy return

87%

higher = livelier, more free power

Spin potential

5.6

higher = more spin off the string bed

Ball bite

0.451COF

higher = grabs the ball harder

Snapback

0.081COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 169 lb/in · 37th pct

Stiffer than 37% of strings tested.

Tension loss 45 % · 76th pct

Sheds more tension than 76% of strings tested.

Energy return 87 % · 33rd pct

Livelier than 33% of strings tested.

Spin potential 5.6 · 71st pct

More spin potential than 71% of strings tested.

Ball bite 0.451 COF · 56th pct

Grips the ball harder than 56% of strings tested.

Snapback 0.081 COF · 26th pct

More string-on-string friction than 26% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Signum Pro Tornado 18 (1.17) 94% match Tourna Big Hitter Black 7 17 93% match LaserFibre Vorso 17 (1.23) 93% match IsoSpeed V18 19 (1.12) 92% match Head Lynx 18 (1.20) 91% match Gosen Poly Professional 16 (1.29) 91% match

More from Gosen

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare Poly Professional 17 (1.24) against 789 strings Find the right string for me