Definition Of Golf Terms - Part 1 |
by Staff 8
ANGLE OF ATTACK - the degree of descent of the clubhead approaching the ball just prior to impact.
BACKSPIN - the backward rotation of a golf ball in flight around a horizontal axis.
BACKWEIGHT(ING) - an amount of weight added to the rear portion of a wood club designed to move the center of gravity back in the clubhead; normally done by attaching preformed brass or steel pieces to the rear of the wood head.
BLADE - the head of an iron club.
BLADE LENGTH - the distance from the forward most portion of the toe to the heel portion of the hosel radius.
BLENDED TOE - a type of iron head design where the back of the blade rounds into the toe through a given radius.
BORON - a high strength, high modulus lightweight filament that is five times the strength of steel and twice the stiffness. Used as one of several material types in composite shaft designs. Boron influences flex point but primarily is used to add strength to the tip area of the shaft.
BOUNCE (or INVERSION) - when the trailing edge of the sole is below the leading edge of the sole in the square hit position.
BOXED TOE - a type of iron head design where the back of the blade makes a sharp transition into the toe.
BULGE - the horizontal curvature on the face of a wood head, expressed in inches of radius.
BUTT SECTION - the larger end or grip end of a golf shaft. The butt section can be measured from the last step to the butt end.
C.C.'s - stands for cubic centimeters. This is a metric measurement for volume. It is the modern way to state the size of metal woods so sizes can be compared from one club to another.
CALIPER - a tool used to measure diameters of grips, shaft sections, etc.
CAMBER - referred to also as a rocker sole, radiused sole, 2-way and 4-way roll. The radius curve in the sole of an iron club, whether from toe to heel, or leading edge to trailing edge, or both. Hence, 2-way or 4-way radius.
COMPOSITE - a combination of materials comprised of a base material and some type of adhesive to bind them together. Can come in a variety of forms ranging from fibers, particles or layers. Also, the principal term used to describe shafts and heads made of more than one material.
CORRUGATION - see Scoring.
COUNTERBALANCING - reducing the club's swingweight by adding weight to the grip end. Total weight increases and swingweight descreases.
CROWN - the highest point of the top radius of a wood head.
DEEP FACE - wood heads that have a face height greater than standard.
DEFLECTION BOARD - a tool used to measure and compare the bending of one shaft to another. The butt end of the shaft is clamped and a 7 lb. weight is hung from the tip end to create a bend or curve in the shaft. Readings are taken along the shaft and compared to readings taken from other shafts.
DIG - see Scoop.
DOWEL - a round wooden rod, usually 5/8 inches in diameter, inserted into the butt end of a shaft for lengthening woods or irons.
DYNAMIC FITTING - method of fitting golf clubs in which fitting decisions are made based upon ball striking tests.
EFFECTIVE LOFT (Also Real Loft) - The loft of a wood club when it is rolled into the square (0o) face angle position. Also the loft of a wood club when the face and shaft centerline are both perpendicular to target line.
FACE - the outlined or defined hitting surface of a wood or iron club.
FACE ANGLE - the angle of the face of a wood club to the grounded sole line with the shaft hole perpendicular to the line of flight.
FACE CENTERLINE - an imaginary line which bisects the head of a club in the exact geometric center of the face or insert.
FACE DEPTH - the measurement of the height of the face of a wood head or iron head on its centerline. Noted as either shallow, normal or deep.
FACE PROGRESSION - Measurement of the distance from the centerline of the shaft or hosel to the front leading portion of the clubface in both woods and irons.
FILAMENT WINDING - the process for manufacturing a seamless composite shaft with continuous resin-impregnated "yarns" of graphite wound around a mandrel in a predetermined pattern from tip to butt, forming a shaft. This is the expensive way to build composite shaft and also control shaft specifications the best. The other method is using a made up "pre-peg" and hand wrapping it around a mandrel. This also is a very acceptable method.
FIRST STEP - the first formed and defined visual transition to increased diameter in a golf shaft.
FLANGE - term describing the elongation of the trailing edge of an iron club or putter.
FLAT LIE - the lie angle is more level or horizontal than the standard.
FLEX POINT (Also known as "kick-point" and "bend-point") - the location on the shaft where the bend is the greatest. Shafts will have either low, mid or high flex points. Generally, high flex points help better players and low to mid flex points all other handicaps.
FLUTED SHAFT - a steel shaft that has channels formed vertically (longitudinally) in the shaft usually near the tip end.
FORCE FIT SHAFT - a tip taper wood or iron shaft to head assembly.
FOREWEIGHT(ING) - locating weight in the face area of a club, done to bring the center of gravity forward in the clubhead. Usually done through installation of heavier insert material.
FORGING - one of the processes for forming iron heads. A metal bar is placed between two halves of a die and hammered under pressure into the rough shape of an iron head.
FREQUENCY - a time measurement of a golf shaft's oscillations to determine stiffness. Applies to raw or cut shafts and finished clubs. The time measurement is usually expressed in CPM (cycles per minute).
GOLF CLUB NAME TERMINOLOGY
GRAPHITE - a pure carbon mineral made into fibers, mixed with a resin and formed into a golf shaft. It is known for its very light weight and high strength.
- Driver - name given to the #1 wood.
- Brassie - older name given to a #2 wood.
- Spoon - older name given to the #3 wood.
- Cleek - older name given to the #4 wood.
- Baffy - older name given to the #5 wood.
- Driving Iron - older name given to the #2 iron.
- Mid Iron - older name given to the #2 iron.
- Mid Mashie - older name given to the #3 iron.
- Mashie Iron - older name given to the #5 iron.
- Spade Mashie - older name given to the #6 iron.
- Mashie Niblick - older name given to the #7 iron.
- Lofter - see Pitcher. Older name given to the #8 iron.
- Niblick - older name gien to the #9 iron.
- Pitching Wedge - more of modern era iron club used to approach the green and for chipping.
- Sand Wedge - an iron club used from sand or pitching from around the green.
- Putter - the club designed for use on greens to stroke the ball into the hole.
GRAPHITE COMPOSITE - a golf shaft made of a low percentage of carbon graphite and a higher percentage of another material such as fiberglas.
GRIP MATERIAL - the substance from which any grip is made. The most common types are rubber, rubber and cork, rubber and cord, kraton and synthetic.
GROUND LINE - an imaginary line running from the clubface to back and perpendicular to the shaft centerline.
HEAD WIDTH - in a wood head, the distance from the farthest forward point of the leading edge to the farthest rear point of the back line.
HEEL - the lower back area of the hosel where the sole meets it.
HEEL/TOE WEIGHTING - process of weight distribution whereby weight is relocated from the center of a wood or iron equally to the toe and heel. This process does not change the center of gravity but does improve off center hits by putting more mass in these areas.
HOSEL (Also called the Neck) - portion of wood or iron head that receives the shaft.
HOSEL OFFSET - the distance from the farthest front portion of the hosel to the farthest front portion of the leading edge at the face center.
INLAY - 1. Another term for an insert. 2. The wood or epoxy section set into the heads of some models of metalwoods.
INVESTMENT CASTING (Also known as the "Lost Wax" process) - a method of accurately producing iron heads, some soleplates and metalwoods. A mold is made, and a wax is cast from the mold. This wax is dipped several times in a ceramic slurry or mixture which then hardens. The slurry is heated and the wax melts away (lost wax). Molten metal is poured into the slurry shell (invested) and allowed to cool.
LENGTH - CLUB - the distance from the heel portion of the sole radius to the top of the grip cap. This definition is the traditional method.
LIE - the angle of the centerline of the shaft with the ground line tangent to the sole at the centerline of the face.
LOFT - IRON - the angle of the face on its centerline to the centerline of the hosel bore, measured in degrees.
LOFT - WOOD - the angle of the face on its centerline to a line perpendicular to the sole line measured in degrees. Loft is then read at a point 1/2 the distance of the face height.