Like the GBB Epic driver, the Callaway Epic Flash and Epic Flash Sub Zero drivers utilize Adjustable Perimeter Weighting to shift center of gravity (CG) and produce draw or fade biases – this is the first time a Sub Zero driver has CG-adjustability. The new Epic Flash drivers, according to the company, have the hourglass-shaped Jailbreak bars that were introduced in the Rogue drivers. With its newer Rogue drivers, Callaway refined the shapes of the bars to be in an hourglass shape this helped save weight from the bars – located in the front portion of the club head – and repositioned that saved weight in the rear of the clubheads to raise MOI. With Callaway’s original GBB Epic drivers, the company introduced Jailbreak technology, which was essentially two vertical and parallel bars that sat behind the face, connecting the crown to the sole, to stiffen the structure while allowing the face to flex more at impact. Also, the Flash faces are forged from titanium and heat treated for maximum flexibility and strength.Īlso new in the Epic Flash and Epic Flash Sub Zero drivers is a “triaxial carbon fabric” that Callaway calls “T2C.” The crown is said to have a tighter weave that saves weight from the top of the club head, and is then repositioned to create higher MOI (Moment of Inertia) and thus more forgiveness. Callaway says that while the ripples appear to be random, they work in conjunction to elevate the COR (coefficient of restitution) in the center of the face for a ball speed boost on center hits. Now, if you look behind the Flash faces, they have dozens of ripples varying in size, depth and configuration. They were also symmetrically designed, for the most part. They were designed to pick up ball speed on off-center hits, and to maximize ball speed on center strikes. So instead of engineers making 8-10 prototypes for new faces and testing them out, as per usual, the computers cycled through 15,000 different designs before delivering the Flash Face.Ĭallaway’s last few iterations of drivers – designed by human engineers – used Variable Face Thickness technology and X-face designs that made the faces thicker in the center and progressively thinner toward the outer regions of the face. To design the new Flash faces, Callaway used AI coupled with “Machine Learning,” which means that a computer uses statistics to “learn” data instead of being programmed, according to the company.
To follow up two lines of number-one selling drivers in the GBB Epic and Rogue, Callaway has turned to Artificial Intelligence (AI) to design the faces of the new Epic Flash and Epic Flash Sub Zero drivers, a technology the company is calling “Flash Face.”
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