Aldila 2KVX NV Driver Shaft
A new generation of carbon fibers, that boost the strength of the material used in the construction of golf shafts are boosting strength while reducing the weight. Applying these new material to classic designs is changing the game. Advances in head design are helping us hit the ball further, advances in shaft design are keeping those longer balls in the fairway. The Aldila 2KVX NV is the third iteration of a classic design. Who can forget the original lime green Aldila NV. Of course, it was introduce such a long time ago many younger golfers have never seen it. I looked in the 2016 GolfWorks catalog and it is still there. The official second generation design, the RIP NV was reviewed here, a few years ago. When you have a design that works, and new materials, the old designs get updated.
Aldila was one of the first shaft companies to use thinner layers of material in shaft design. It was called MLT, Micro Laminate Technology, and I believe the original NV was the first shaft to use it. We are now in an time when a lot of new high density, high strength materials are being used in golf shafts. The new fibers are thinner with the same strength. The prepreg, the sheets a shaft is made from, have more fiber and less resin. This denser material is redefining how a golf shaft can be made. A new dimension of what started as MLT is evolving. What we are seeing is torque numbers going slightly higher to restore a conventional feel to high density shafts. As you compare the torque numbers of the 2KVX NV to older designs and see larger torque numbers, do not be alarmed. It is happening everywhere high density materials are used.
KBS Tour FLT Iron Shafts
Kim Braly has been designing and making shafts for around 40 years. That’s a long time. In my opinion fitting is an experience based art form and is likely to remain so. That said, over 40 years one accumulates an impressive amount of experience.
The KBS Tour was the first shaft produced by Femco steel as the KBS brand. We have seen a lot of designs since its introduction, most of which are reviewed here. This year, KBS is introducing its first flighted design. My experience with ‘flighted’ shafts goes back to the Project X Flighted designs. That design was promoted as having the propensity to create the same ball flight height throughout the set. The short irons height apex being lower and the long iron height apex being higher than the conventional set of Project X shafts.
It was not until I measured the KBS Tour FLT shafts and compared them to the KBS Tour that I understood exactly how that is accomplished. In a shaft product line like KBS, the shaft bend profiles are the same for all shafts in the design family. As they get heavier, they get stiffer. And, as they get stiffer for any particular golfer, the launch angle tends to come down. This is what I love about the KBS mix of shafts. They are available in 5 gram increments, with flex designations of R, R+, S, S+ and X. If I want to change a clients launch angle I move the stiffness up or down 5 grams. Now before the professional fitters reading this jump on me, that can also be accomplished by hard stepping or soft stepping the set. Leaving the weight the same but altering the tip lengths.
In this video Kim and I discuss set stiffness gradients. After a discussion of the KBS Tour 560 and 580 shafts we talk about the FLT design. He tells us this shaft is already getting tour play. When you push the flight apex of those longer irons out, not only is there likely to be some distance gain, but the ball will have a steeper angle of descent. What I refer to as drop and stop trajectory.
Lets take a look at the numbers in a way I have not presented the here before. This style of information is now incorporated into the latest version of the Fit2Score shaft knowledge base. The set charts shown above are also from that software.
The tip to butt rations indicate a mid launch as is typical on the KBS Tour. Torque is typical for steel, low. Balance is conventional, the weight range works for the average to tour level player. The low ninety driver swing speed player is going to fit into the 110 or 115 gram R or R+ models.