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Overspeed training has long been purported to increase swing speed by 5-10 mph with proper tools and training. You can certainly purchase your own clubs from SuperSpeed Golf, or you can make your own if you have a weekend and some tools.
The idea of overspeed training is to train your body to move faster with lighter and heavier clubs compared to your regular driver. There are a number of training protocols out there (including from SuperSpeed Golf) as well as countless YouTube Videos . How you train is up to you, but here's how you can make your own over speed training clubs. The three clubs are different weights. It's generally recommended that the lightest club is about 20% lighter than your driver, the medium about 10% lighter, and the heavy club about 5% heavier.
This is not a difficult project, but you'll need to know how to:
The weight size of each weight is the most important part of this build, and you must calculate each weight properly. To aide you in this, I've developed this weight sizing calculator. You can download it above, and you will use it for the subsequent steps.
Weigh your current driver in GRAMS and enter it into the spreadsheet in cell B12. The sheet currently is set up for 315g driver.
Most grips are 50g, and shafts usually from 60-80g. Enter these two values in the 3 rows of the spreadsheet C15-C17 and D15-17. This will allow the spreadsheet to calculate the desired weight of each "head" for the light, medium, and heavy clubs.
I made the weights from 360 Brass, 1" diameter, which is a common brass, and easy to machine, especially with hand tools. The weight sizes range from about 1.5" long to 2.5" long, depending on the weight. The weight and size of the brass rod in the description above is already entered into the spreadsheet, but if you bought something else, you need to enter the length, diameter, and weight of the stock you bought so that the density of the material can be calculated and the size of each weight determined.
Since you'll be drilling a hole through the bar stock, the spreadsheet needs to know how big the hole is in order to calculate the size of each weight. Enter the shaft diameter in cell B27 in inches. (yes, I know, I'm mixing up measurements between metric and imperial, but I'm using the measurments which are most common to each component).
After you enter the appropriate values, the length of each weight is calculated in both Imperial and Metric.
Seems backward to drill the holes into the stock before cutting, but I found that since I'm using a hand drill, if I
cut the material first, it makes it difficult to drill out through the end of the stock. Put the bar in a vice or in your drill press, mark the center of the
stock, and drill END FIRST about 1/2" past the depth that you need. For example, my smallest weight is 1.47", so I'm going to drill about 1.75" down through the
stock. Doing this by hand isn't difficult, but it IS difficult to get the hole perfectly centered and drilled as straight as possible. Just do the
best you can, it's not important to the function of the club, but only to the looks.
I also recommend you chamfer or debur the edge of each hole so that there are sharp edges. You can see one of the images on the right a closeup of the chamfer. All I did was use the
edge of the screw-driver and scraped the edge of the hole. Easy to do in brass this soft.
Now that the hole is drilled, cut the first piece to length. I needed a 1.47" piece, so I cut about 1/8" oversize since I will then grind down the bar stock to the specific weight. Repeat the hole drilling and cutting until you get your 3 pieces.
Your initial cut of the weight is a rough sizing. Now you need to file or grind the end of the piece you just cut to the proper weight. Take off a little material at a time, weighing the piece every few times. I was able to get mine down right to the gram for each piece.
The shafts I bought were 46", but my driver is 45" long, so I cut 1" off the BUTT END (the grip end) of each club. You can do this easily with a hack saw. Sand down the edge to make it smooth.
Time to glue it up! Prep your shaft tips by lightly roughing them up with some sand paper. Slide on the ferrule, put epoxy on the shaft and in the hole of the weight, and glue them together, making sure the shaft goes all the way through the weight. Set them aside over night.
Your clubs are almost done! Just go and put the grips on the shafts just like a normal club.
You will now want to get your clubs down to the proper weight. They'll probably be a bit over weight because of the additional weight of the epoxy. Mine were all exactly 5g heavier than I wanted, so I ground down the weights at the end, griding the end of the shaft flush with the weight. Then I slowly took a little material off the brass, and kept re-weighing the club until right on the money. Just becareful not to grind too much too fast otherwise you could overheat the material which will weaken the epoxy bond.
I took a power sander and lightly sanded the outside diameter of the weight which give it a nice polished look. Purely esthetic in nature, so you can skip this step if you want.
Let me know if you had success in over speed training, I plan on using this system now that the snow has started to fly!
