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Gosen

Sidewinder 17

Polyester Gauge 17 1.23 mm In production

Lab measurements for Gosen Sidewinder 17, 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

159lb/in

lower = softer, kinder on the arm

Tension loss

47%

lower = stays where you strung it

Energy return

85%

higher = livelier, more free power

Spin potential

4.6

higher = more spin off the string bed

Ball bite

0.412COF

higher = grabs the ball harder

Snapback

0.090COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 159 lb/in · 25th pct

Stiffer than 25% of strings tested.

Tension loss 47 % · 81st pct

Sheds more tension than 81% of strings tested.

Energy return 85 % · 20th pct

Livelier than 20% of strings tested.

Spin potential 4.6 · 45th pct

More spin potential than 45% of strings tested.

Ball bite 0.412 COF · 31st pct

Grips the ball harder than 31% of strings tested.

Snapback 0.090 COF · 46th pct

More string-on-string friction than 46% of strings tested.

Strings that play like this

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

Topspin Cyber Flash 17 90% match Gosen Polylon PolyBreak 18 (1.20) 90% match Gosen Polylon SP 17 (1.24) 89% match IsoSpeed Pulse 16 89% match Head Sonic Pro 16 88% match Gosen Polymaster II 16 88% 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 Sidewinder 17 against 789 strings Find the right string for me