1. EWG’s Composite Bat By Eric Walther-Grant

2. Design Choices LayersAnglesEffect 670 Resin would have trouble penetrating all the layers of the bat. Complicated to work out 830 Should work, however Group I had a higher angle and their MOI was still lower than my target. 850 Safe. Even if my model is incorrect, the angle increase relative to Group I should compensate for the lost length. 870 Many of the same problems as the first and the bat would have to be at the minimum size.

3. Design Plan Layers8 Angle50 Degrees Shell Mass17.85 Ounces Shell Center of Mass17.17 Inches End Cap Weight3.3 Ounces Knob Weight1 Ounce Target Shell MOI3484 Target Final MOI6004

4. The DATA PredictedActualPercent Error Shell Mass17.8519.38.12% Final Mass22.1527.1522.5% Shell Center Of Mass 17.1715.12511.91% Shell MOI340032703.82% Final MOI6000519013.5%

5. Conclusions Update the model to include the differences in Mass and CM Always go over by 100 MOI if possible. Add an extra ounce of resin for the end cap I failed to expect these problems, therefore I would consider this a failure.