Golf club heads with turbulators and methods to manufacture golf club heads with turbulators

A golf club head comprising:

• a face portion defining a loft plane, a rear portion opposite to the face portion, a heel portion, a toe portion opposite to the heel portion, a crown portion having a crown surface extending between the face portion, the rear portion, the heel portion and the toe portion, a sole portion opposite to the crown portion and having a sole surface extending between the face portion, the rear portion, the heel portion and the toe portion, and a leading edge portion between the face portion and the crown portion, the leading edge portion defining a leading edge plane forming a leading edge angle with the loft plane;
• and
• a plurality of crown turbulators disposed on the crown surface, each crown turbulator having a front portion defining a portion of the crown turbulator being closest to the face portion, the front portion of at least one of the plurality of crown turbulators being at least partially located on the leading edge portion and between the leading edge plane and the rear portion, but not extending beyond the leading edge plane;
• a plurality of crown turbulators on the surface of the crown portion, each adjacent pair of crown turbulators being separate and spaced apart and extending generally in a direction from the face portion to the rear portion;
• and
• a plurality of grooves in a portion of the sole surface, the plurality of grooves configured to reduce the volume of the golf club head and allow the size of the golf club head to be enlarged without substantially changing the volume of the golf club head;
• wherein:
• the leading edge angle is greater than or equal to 30 degrees and less than or equal to 90 degrees.

A method for forming a golf club head comprising:

• forming a face portion defining a loft plane, a rear portion opposite to the face portion, a heel portion, a toe portion opposite to the heel portion, a crown portion having a crown surface extending between the face portion, the rear portion, the heel portion and the toe portion, a sole portion opposite to the crown portion and having a sole surface extending between the face portion, the rear portion, the heel portion and the toe portion, and a leading edge portion between the face portion and the crown portion, the leading edge portion defining a leading edge plane forming a leading edge angle with the loft plane;
• and
• forming a plurality of crown turbulators disposed on the crown surface, each crown turbulator having a front portion defining a portion of the turbulator being closest to the face portion, the front portion of at least one of the crown turbulators being at least partly located on the leading edge portion and between the leading edge plane and the rear portion, but not extending beyond the leading edge plane;
• wherein:
• the leading edge angle is greater than or equal to 30 degrees and less than or equal to 90 degrees.