Strong vs. Weak Bowling Balls

Duration: 5:20

Bryan O’Keefe and Carolyn Dorin-Ballard discuss the difference between strong and weak bowling balls and the common misconception of what it means for a ball to be considered strong.

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3 Responses to “Strong vs. Weak Bowling Balls”
  1. Vicki Marcink

    Appreciate all the tips. Is a learning experience and good info for me to help improve my skills as a bowler. Many thanks.

  2. Don Evans

    Would you follow up and discuss how the RG and Dif Factors, plus ball surface play into the strength or weakness of a bowling ball. Thank you

    • Customer Service Techs

      Hi Don-Surface has the largest overall effect on bowling ball motion. Stronger balls (in terms of length of the lane) have duller surfaces with more texture and the surface is grabbing the lane and slowing the ball down sooner. Stronger surfaces include textures such as 180, 360, or 500 grit. Weaker balls (in terms of length of the lane) have shiny surfaces with less texture and the surface is grabbing the lane slowing the ball down later. Weaker surfaces include textures such as 2000, 3000, or 4000 grit.
      The RG (Radius of Gyration) of a bowling ball is a measurement and is the distance from the axis of rotation at which the total mass of a body might be concentrated without changing its moment of inertia. High RG (2.690” – 2.800”) cores promote length while low RG cores (2.460″ – 2.570″) promote earlier roll.
      Differential is the difference between the maximum and minimum RG’s and it dictates the ball’s track flare potential. High Diff (0.041 – 0.08) cores can create length with angular back end motion while low Diff (0.01 – 0.02) cores promote smoother overall motion on the lane.