Mar
9
2010

Ping G15 and Srixon Balls Redux

Another point of going to the golf show was to follow up with some of the vendors about my previous posts.

I had the chance to speak with Ping about their new G15 driver. As you may recall I really liked this driver and thought it felt simply amazing at impact. The thing about Ping is that I feel that there are considerable differences from the G10 to the G15. I find that it is rare to find such a different feel in a club that is just a generation apart. For those interested, my original brief review can be found here. What I found out from the Ping representative was that Ping worked very hard on something that I don’t hear much about, the balancing of the club. The new G15 has a larger face to assist the focus group of game- improvement customers with an additional five grams in the face area that was removed from the shaft. Perhaps my ignorance as I had not heard of this previously but they then placed additional weight in the butt end of the shaft. This was said to improve the downswing motion, provide more whip at the transition and balance the impact. I was impressed, if you have a chance to hit the club I highly recommend trying it out. If I had the chance right now, it would be the driver in my bag.

The Black Markings

I received some feedback about the Srixon ball review I posted. I was interested in finding out more about the markings on the ball and additional information about how Srixon planned on making their ball better than what is already on the market. As some may know, the new Srixon Trispeed balls are going after the intermediate market in competition with the Titleist NXT, Bridgestone E, Callaway HX HOT to name a few. I asked the representative directly about it and he responded about the cover of the Srixon balls. They are made of a material called Rabalon, which is essentially a rubber impregnated ionomer (surlyn) cover. Makes sense since Srixon is in fact a rubber manufacturer just like Bridgestone. Never heard of them before? How’s about Goodyear, Dunlop and Falken tires? All owned and manufactured by the Sumitomo rubber group. So what makes a rubber impregnated ball any better than a “straight” Surlyn ball like so many others? The rep had told me that the cover was meant to grip more to the surface of the club without having to rely as much to the grooves. It was to be a resilient, durable and consistent cover for the intermediate golfer. In addition to these points the manufacturer also wanted to remain conscious of the cost and price point of the ball to the general market. After speaking to him for a while I addressed some of my findings and he had suggested to stick with the Trispeed. Apparently I was not compressing the ball enough in order to really take advantage of what the Trispeed Tour had to offer.

Mar
3
2010

OMG Part 2

I swear I am like a pre-teen at Hot Topic as brand new Twilight movie T-shirts are released.

Michael Breed commented on my post about the Golf Fix again. I am honored.

Mar
3
2010

The Basics of Forged Golf Clubs

Since beginning my basic research in golf clubs I have always thought of the construction of golf irons to be relatively the same. Basically a piece of iron milled from a single piece of raw stock. Milled, bent here, grinded on there, laser milling, etc.Somewhat simple, no complex tolerances, or dimensioning a golf iron seems pretty easy to make. What I found from this last weekend is how to make them well, basically to use advanced processes to assure strength, consistency and most of all, feel.

The Steps In Making A Mizuno Iron

I spent some time with the folks from Mizuno at the LA golf on Saturday. I have long known the saying, “Nothing feels like a Mizuno” and I was eager to find out why. Using some of my previous machining and metallurgy knowledge I will attempt to discuss just how Mizuno has perfected the art of a forged golf iron.

The process starts out with a piece of iron extruded to a single dowel. This raw stock in the terms of the metallurgy world is called a billet or ingot. It is bent to suit a mold, inserted into this mold, superheated and then under enormous pressure a large press forms it into a blank. The extra material along the sides is called flashing and it is generally ground off. What Mizuno does then is inserts this piece into ANOTHER press, heats it, and presses it again. The secondary blank is then put into a CNC machine for additional detail work around the edges, back, sole, etc.

Let me point out something here that really surprised me. If you look at the picture about and see the fourth

Milled - Grain Could Be In Any Direction

item from the left, this is the secondary blank that I speak of above. The grooves on a Mizuno are actually forged! This makes them much stronger than if they were just cut. Why? I was just getting to that.

By now some of you may be asking what makes a forged club better than a milled club? Just what makes it stronger? It’s actually two things that does the heating of the iron which helps to harden the metal and the grain. You see there is a primary difference when talking about forging over any other machining process. You are dealing with the basics of the metal, the actual grain. This is why the ingot at the beginning step is extruded (think spaghetti noodle maker, material squeezed through a small hole) you are working the grain of the metal. The bending step keeps the grain consistently formed in

Forged - Grain Is In Direction Of Profile

the same arc as the club. If the material was just poured into a mold like a casting or milled from raw stock without this step the grain could be going in any direction. This makes the metal inconsistent in its integrity its not a bad thing, just not as good. Having the grain flow in the direction of the profile of the club head makes it more consistent in integrity which in turn makes the metal stronger and much more resilient.

I have a few more points from the Mizuno interviews coming up in future posts, I will be addressing the Mizuno proofing of consistency in construction, the new MP-630, Mizuno fitting techniques and why they will be my next set of irons.