Name: Volkl V-Star 18 (1.20)
Brand: Volkl

Measured values

Stiffness

163lb/in

lower = softer, kinder on the arm

Tension loss

51%

lower = stays where you strung it

Energy return

85%

higher = livelier, more free power

Spin potential

—

not measured

Ball bite

—COF

not measured

Snapback

0.079COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 163 lb/in · 31st pct

Stiffer than 31% of strings tested.

Tension loss 51 % · 89th pct

Sheds more tension than 89% of strings tested.

Energy return 85 % · 23rd pct

Livelier than 23% of strings tested.

Snapback 0.079 COF · 21st pct

More string-on-string friction than 21% of strings tested.

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.