Henry-Griffitts, Inc. club building
Steel shafts- All steel shafts are sorted by gram weight and all shafts that weigh outside of weight tolerance are returned to shaft manufacture for credit. H-G will use the same weight shafts through out the set of clubs for each customer and the weight of the shaft used is documented under the customer name in our data base for future matching orders.
Graphite shafts- All graphite shafts are sorted by frequency cycles and when building a set of graphite clubs we will use the same starting frequency through out the set. The starting frequency is also documented under the customer name in our data base. All shafts that frequency outside our frequency tolerance is returned to the graphite manufacture for credit.
Cutting of golf shafts- Henry-Griffitts, Inc. has the tightest frequency tolerances through out a set of clubs than any other manufacture in the industry. From the longest club to the shortest club the frequency will only increase by 1 to 2 cycles between each club, in most manufactures their frequency will increase by 4 to 5 cycles between each club. What this means in a set of club is that instead of up to a 32 cycle change in a set of clubs, H-G’s sets of clubs will only have up to a 15 cycle change from longest to the shortest club. It only takes 15 cycles to make a different shaft flex, meaning there is at lest two different shafts flexes in a typical non H-G set of clubs. H-G’s length tolerance when cutting shafts is plus or minus a 1/16”.
Iron Heading- Five Irons in the H-G demo’s all weigh between 254 grams too 256 grams, so when we are building a set of irons we always start with a 5 iron that matches the weight of the demo 5 iron and then match the other clubs to that 5 iron swing weight. Swing weight tolerance in a set of H-G clubs is plus or minus a ½ swing weight based off the average swing weight through out the set. Half a swing weight is 1 gram in head weight. This is the first of three swing weight checks we do during the club building process, and it’s called the head swing weight. The head swing weight is recorded under the customers name in our data base for future matches. All iron heads that come into the H-G plant are sorted into bins by gram weight.
Wood Heading- Using hot melt special glue all heads that come into the H-G plant are weighted up to a gram weight that matches the woods in the demo systems. When heading woods we will swing out each wood and document those swing weights under the customers name in our data base. Swing weight tolerance is plus or minus a ½ swing weight.
Iron Bending- Every iron head is put into our iron loft and lie machine, and matched to the loft and lie angles provided by the fitter. H-G’s tolerance on lofts and lies is plus or minus a ½°. Henry-Griffitts, Inc. has a lie angle range from 8° flat too 6° up, and a range on lofts from 2° strong to 3° weak off of standard lofts.
\
Wood Bending- The H-G drivers are not bendable since they are a titanium head, but we still check lie angles and face angles to make sure they match the demo system wood heads. If a driver falls out side of the H-G tolerance, we will return it to the manufacture to be bent back to the H-G tolerance. Since H-G’s tolerance on face angle is plus or minus ½°, and the head manufactures tolerance is plus or minus 1½°, H-G will have to pay a special price to have it moved back to our tolerance, although there are times when the face angle will come in outside the head manufactures tolerances, those would be adjusted for free.
H-G’s fairway woods are all adjusted for both face angle and lie angle.
H-G bends both the face angles and lies from 3° flat to 3° up. Tolerance on these two angles is plus or minus ½°.
SST PURING- The purring process is done after the shafts have been cut to length, and is done to put the shaft in a stable position. H-G is the only golf club manufacture that offers purring in the golf club assembly line. H-G gives the fitter the option of having a club purred on the weak side for higher ball flight or on the stiff side for lower ball flight. By purring a shaft we can assure the customer that the shaft will not influence left or right ball flight because the shaft will be epoxy into a neutral position.
EPOXY- H-G adds 1 gram of epoxy to every club to assure a life long epoxy bond. This is also another area during the club building process that we check the swing weight on each club to make sure they are all with in H-G’s swing weight tolerance; this is called the epoxy swing weight. Also during the epoxy process H-G will use a fine sand to help center the shaft into the hossel of each golf head. The epoxy swing weight is documented under the customers name in the data base for future match orders.
Grip Build Up- Using 2” wide build up tape, H-G will build up each grip to match the customer’s needs. H-G’s grip sizes range from -1/32 under too +1/16 over. Since the butt size on golf shafts vary H-G has a special build up chart that shows the amount of build up wraps it will take to match the requested grip sizes.
Gripping- All grips that come into the H-G plant are sorted by the gram weight. A box of the same style grips can range from 49 grams too 56 grams. It is important to use the same weight grip on all the clubs through out the set so the swing weights stay the same. Once the grip type is selected the gripper will document the gram weight of the grip used in our data base under the customer’s name. After the grip is placed on the club and aligned, we will then swing weight out each club for the 3RD time, this is called the final swing weight. The final swing weight is also documented under the customer name in the data base for future orders.
Final Check- All clubs go through final check before shipping out to the customers, each club is checked vs. the specification sheet to make sure the club was built correctly; we also look for any cosmetic flaws. If the club passes inspection a customer name tag is placed on the clubs, and shipped out. Clubs usually go out with in 3 days of when order was placed.
|