BIGFACE 1 DRIVERS

Benefits

• Fewer POF Hits - Partly Off the Face hits are the worst hits of all. They are greatly reduced by the large face size.
  
  
• Easiest to Hit - Huge face and huge moments of inertia make BIGFACE 1 very forgiving.
  
  
• Best Accuracy - Scientifically optimized face surface shape replaces the simple bulge and roll of old style surface shapes.
  
  
• Maximum Distance - Loft angle, center of gravity location, head weight, and club length were optimized for maximum distance in each of the 4 designs.
  
  
• Confidence Builder - These benefits give you confidence, always a major part of your game.
  
  
• Handicap Matched- Large face for large handicap; smaller face for small handicap.

Tests You can Make to Compare Drivers

POF Hits - Keep track of the number of hits that you think are partly off the face. Compare a small face driver with BIGFACE 1.

Size of Sweet Spot - Hit a number of shots, 1 to 1.5 inches toward the toe. Large moment of inertia and proper face shape count. Do you experience smaller errors?

Moment of Inertia - Hold the top of the grip between your thumb and one or 2 fingers and let it hang down. Roll it quickly between thumb and finger. High inertia makes it harder to do. See which is harder to rotate.

Accuracy - Keep track of the hits that are off the fairway. See if you have fewer with BIGFACE 1.

Technical Appendix -- WHY BIGFACE 1 IS DESIGNED LIKE IT IS

Here is an abbreviated explanation of our research which led to the BIGFACE 1 drivers and supports our claims. For more information, order our first book.

We made many tests on the scatter pattern of golfer hits on the face of clubs. This showed how the scatter increases with handicap and how it varies with club selection. This was essential to our work on selecting the size of the face, its outline shape, and its optimum surface shape.

The hit pattern allowed us to find the percentage of hits which were Partly Off the Face (POF hits). Here are results: For handicap 25, 10, and 0 with BIGFACE 1, respective %POF hits were 3.0, .9, and .3. We also did this calculation with a popular big head club and the respective %POF results were found as 16.7, 5.7, and 1.2. BIGFACE 1 reduced this source of trouble by a factor of about 5.

We had many golfers to hit with our test set of 9 drivers which included 3 different shaft lengths with each of 3 different head weights. We measured the head speed at impact and from our technical model, we computed the center hit distance as if it had been a perfect hit. This allowed us to find the optimum combination of club length and head weight. Surprisingly, it depended little on golfer size or for men or for women (ladies, take note and try a BIGFACE 1 driver.)

We conducted many other studies on errors made by golfers, including errors in maintaining the desired club face orientation at impact, how much their head speed varied, how much their alignment varied relative to the intended target direction and other less important errors.

We also made experiments to show the distance of the bounce and roll after the ball hits the turf on fairways and on greens. We did extensive analysis which gave us a detailed understanding of what club design could do to minimize the result of all these variations on the distance and scatter of hits. This was our basic optimizing process.

© 2001 TECH LINE CORP