Kirschbaum

Max Power Rough 18 (1.20)

Name: Kirschbaum Max Power Rough 18 (1.20)
Brand: Kirschbaum

Polyester Gauge 18 1.32 mm In production

Lab measurements for Kirschbaum Max Power Rough 18 (1.20), 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

196lb/in

lower = softer, kinder on the arm

Tension loss

28%

lower = stays where you strung it

Energy return

90%

higher = livelier, more free power

Spin potential

6.8

higher = more spin off the string bed

Ball bite

0.501COF

higher = grabs the ball harder

Snapback

0.074COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 196 lb/in · 64th pct

Stiffer than 64% of strings tested.

Tension loss 28 % · 42nd pct

Sheds more tension than 42% of strings tested.

Energy return 90 % · 61st pct

Livelier than 61% of strings tested.

Spin potential 6.8 · 89th pct

More spin potential than 89% of strings tested.

Ball bite 0.501 COF · 78th pct

Grips the ball harder than 78% of strings tested.

Snapback 0.074 COF · 11th pct

More string-on-string friction than 11% of strings tested.

Strings that play like this

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

MSV Focus Hex Soft 17L (1.20) 97% match Diadem Solstice Pro 15L (1.35) 96% match Solinco Revolution 18 (1.16) 96% match Solinco Outlast 18 (1.15) 95% match Solinco Hyper-G 17 (1.20) 93% match Dunlop Black Widow 18 (1.21) 93% match

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 Max Power Rough 18 (1.20) against 789 strings Find the right string for me

Measured values

How it ranks against all 789 strings

Strings that play like this

More from Kirschbaum

What these numbers mean