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Double AR

Twice Dragon(1.30)

Polyester 1.30 mm In production

Lab measurements for Double AR Twice Dragon(1.30), 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

171lb/in

lower = softer, kinder on the arm

Tension loss

51%

lower = stays where you strung it

Energy return

83%

higher = livelier, more free power

Spin potential

7.2

higher = more spin off the string bed

Ball bite

0.510COF

higher = grabs the ball harder

Snapback

0.071COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 171 lb/in · 39th pct

Stiffer than 39% of strings tested.

Tension loss 51 % · 90th pct

Sheds more tension than 90% of strings tested — goes dead fast, expect frequent restringing.

Energy return 83 % · 10th pct

Livelier than 10% of strings tested — very muted and low-powered.

Spin potential 7.2 · 92nd pct

More spin potential than 92% of strings tested — elite spin generation.

Ball bite 0.510 COF · 81st pct

Grips the ball harder than 81% of strings tested.

Snapback 0.071 COF · 6th pct

More string-on-string friction than 6% of strings tested — slides and snaps back freely.

Strings that play like this

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

Volkl V-Star 16 (1.30) 98% match MSV Focus-Hex +38 16L (1.25) 97% match Volkl Cyclone Tour 16 (1.30) 96% match IsoSpeed Pyramid 16 96% match Double AR Diablo (1.31) 96% match Double AR WTS 25 (1.25) 96% match

More from Double AR

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 Twice Dragon(1.30) against 789 strings Find the right string for me