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Charlie Rymer takes a look at Callaway Golf’s new gravity core technology in the new Callaway Big Bertha Driver 2014. It boasts four key features, starting with a sliding, 8-gram weight set on a 5-inch track on the perimeter of the 460 cc head that is designed to help players optimize shot shape and distance while controlling dispersion.
Callaway new Big Bertha is one of the most iconic brands in golf history, so it is not surprising that the release of a pair of Callaway drivers bearing that appellation is creating some excitement. After all, it has been seven years since the company sold a product bearing that name. A Hyper Speed Face is intended to enhance forgiveness on off-center hits, and an advanced adjustable hosel allows golfers to independently manipulate loft and lie.
As for the Big Bertha Alpha, it, too, comes with a 460 cc head. Only this one is more compact and pear-shaped. The club also features the Hyper Speed Face and the Advanced Adjustable Hosel. But what really sets it apart is the so-called Gravity Core, which lets players adjust spin independently of launch angle – and which Williams says is an industry first.
The core sits within the clubhead in a carbon tube that connects the crown and sole and has a tungsten end and a glass fiber-reinforced body. When the tungsten end is inserted closest to the sole, it creates a lower center of gravity and lower backspin, which produces a flatter, more penetrating trajectory accompanied by greater rollout. Turn it around, and the driver assumes more of a mid-CG position, which nurtures a more controlled, workable ball flight with less rollout.
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