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Gosen

Polymaster I 16

Polyester Gauge 16 1.02 mm In production

Lab measurements for Gosen Polymaster I 16, 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

187lb/in

lower = softer, kinder on the arm

Tension loss

52%

lower = stays where you strung it

Energy return

85%

higher = livelier, more free power

Spin potential

4.7

higher = more spin off the string bed

Ball bite

0.349COF

higher = grabs the ball harder

Snapback

0.075COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 187 lb/in · 54th pct

Stiffer than 54% of strings tested.

Tension loss 52 % · 91st pct

Sheds more tension than 91% of strings tested — goes dead fast, expect frequent restringing.

Energy return 85 % · 20th pct

Livelier than 20% of strings tested.

Spin potential 4.7 · 48th pct

More spin potential than 48% of strings tested.

Ball bite 0.349 COF · 2nd pct

Grips the ball harder than 2% of strings tested — slick against the ball.

Snapback 0.075 COF · 13th pct

More string-on-string friction than 13% of strings tested.

Strings that play like this

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

Kirschbaum Pro Line I 18L (1.15) 95% match Topspin Cyber Flash 16 94% match Gosen Polylon SP 17 (1.24) 94% match Klip Hardcore 16/1.30 93% match Volkl V-Pro 17 93% match Alien Black Diamond 16 93% 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 Polymaster I 16 against 789 strings Find the right string for me