Donnay Pro One GT 18×20

Think of the Donnay Pro One GT 18x20 as Donnay's answer to the Babolat Pure Strike Tour only with a more maneuverable swing weight and a softer feel. Such close comparisons to note are as follows:

  • Strung weight - Pro One GT=11.11 oz///strung weight Pure Strike Tour=12 oz
  • Swing weight - Pro One GT=316///swing weight Pure Strike Tour=330
  • Beam width - Pro One GT=constant beam @ 21mm///Pure Strike Tour=21/23/21
  • Stiffness - Pro One GT=50///Pure Strike Tour=65

Now, consider the Donnay Pro One GT incorporates Quadcore™ Technology which, by Donnay's tests, provides a 6% faster ball speed and an extremely stable racquet and you have a more maneuverable racquet due to the lower swing weight but at an almost identical overall weight as the Babolat Pure Strike frame. Putting this into perspective, the Pro One GT 18x20 is a real performance frame BUT, one that is easier to handle than the traditional frames we see like the Pure Strike Tour or some of the Wilson Pro Staff models that carry a heftier swing weight.
Donnay Pro One GT 18x20

ManufacturerDonnay
Racquet ModelDonnay Pro One GT 18x20
Reference Tension46
StringDonnay X-Poly 17
Machine Strung onWilson Baiardo
Static Data
ASPS, RDC50
ASPS, FlexFour51
Racquet Flex, RDC50
Racquet Flex, FlexFour49
Weight, Gram315
Weight, Ounces11.11
Balance, mm323
Balance, In12.72
Length, Cm68.58
Length, In27.00
Head Width9.43
Head Length13.00
Head Area,Cm621.2
Head Area, Sq. In96.3
Number of Main Strings18
Number of Cross Strings20
Ratio Cross/Mains.653
Main String Grid7.67
Cross String Grid10.27
Density0.817
Average Cross String Spacing0.514
Average Main String Spacing0.426
Dynamic Data
Dynamic Tension, Kp, ERT33
Dynamic Tension, Lbs/In184.57
First Moment, Nm0.782
Polar Moment330
Torsional Stability14 (the difference between polar moment and swing weight) the higher the better.
Swing Weight, Gram316
Swing Weight, Ounce11.15
Swing Weight Calculated328.6
Power, RDC48
Control, RDC39
Maneuverability, RDC64
Power, Calculated1522.5
Head Points6.27 (negative number = head heavy)
Head Weight %47.1 (% weight distributed toward head)
Center of Percussion21.6 (location from the butt to the point creating minimum rotation on ball impact)
Dwell Time, Ms9.00
Effective Stiffness25.0
K, lb/in160.26 (weight required to deflect string bed 1 inch)
Recoil Weight161.59
Twist Weight210.92
Written by John Gugel

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