Video Technical Overview by Alan Hocknell – Callaway:
We begin this review with quite a statement: “Probably the best driver on the market” and we’re going to back it up with Golf Digest 2017 Hot List Results:
Picture 1. The best drivers in Golf Digest 2017 Hot List
The GBB Epic Driver comes with thinner face thanks to additional structural stability. Callaway’s engineers did a great job with designing the head (which has two bars stretching from the crown to the sole inside – Jailbreak Technology). Because of these improvements, the face is 20% thinner and springy than ever before. Higher models use a titanium frame with carbon panels at the top and bottom. GolfDigest editors consider Great Big Bertha Epic Driver as the most interesting driver in two decades.
94% of testers would recommend this product (data from GolfDigest.com)
Technical Features:
Jailbreak Technology
During impact with a golf ball, a metal would face flexes. This is how Jailbreak Technology handles it compared to a finite element without Jailbreak. Two stretching bars change how the head and face behave at impact. This allows us to reach even more speed and distance.
Picture 2. Finite Element Analysis
Stock Shaft Options
There are four shafts in four weight classes (40g, 50g, 60g and 70g):
Project X HZRDU T800
Most popular shaft, lightweight to promote speed. Built with T800 material to comply with Jailbreak. The best choice for most of the use cases.
Diamana Greenboard M+
Significantly lighter for max speed
This Diamana M+PLUS features the highest balance point in the product line. Excellent for players wanting to go lighter and longer.
Fujikura Pro Green
Aldila Rogue Max
Head Speed
Callaway teamed up with industry-leading Aerodynamics company to implement head with an improved airflow (which directly promotes more swing speed).
Perimeter Weighting
Track was completely redesigned and sliding 17g weight allows to fit the club to the swing, providing 21 yards of shot-shape correction for more control.
Carbon Construction
Mix of titanium Exo-Cage and triaxial carbon crown (note the fact it’s the lightest crown ever in Callaway driver) and sole presents forgiveness at the extraordinary level.
Other Reviews: