From Golf Magazine (March, 2011)
Category: Max Game-Improvement Drivers
We tested: 9.5°, 10.5°, 11.5° with Project X graphite shaft
Key Technologies: Made of a lightweight, strong "forged composite" material that's one-third the density of titanium. "Hyberbolic face technology" boosts ball speed on off-center hits. Diablo Octane is said to be 8 yards longer than its all-titanium predecessor, Diablo Edge.
OUR TESTERS SAY: One of the top overall performers. A real asset distance-wise on pure hits.
DISTANCE: Lightweight head, super-large sweet spot and good energy transfer help some testers achieve bona-fide distance gains.
ACCURACY/FORGIVENESS: High-MOI clubhead assists in keeping bad shots from straying too far off-line.
FEEL: Stable sensation through impact despite lightweight design; several testers like the lively, "crushed it" impact feel.
PLAYABILITY: Testers appreciate its high, straight flight; 11.5° loft (with 1° closed face) produces slight draws.
LOOK: Battlestar Gallactica-like design on the crown makes it easy to square up the clubface.
Not the best option for those who already struggle with the occasional hook; closed face in the 11.5° head put off some testers.
From Golf Magazine (December 2010)
It's for: All handicap levels
Callaway's design team and Lamborghini engineers co-developed a cutting-edge material called Forged Composite. The idea is that forging carbon fiber enables Callaway to precisely control wall thickness. Translation: Specific parts of the clubhead are made thinner (lighter) or thicker (heavier) as desired. The Forged Composite crown, in this case, is lighter than a standard titanium crown. The lighter-colored material in the inset photo is the actual Forged Composite material. Overall, the driver is lighter and longer (46" shaft vs. 45") than its predecessor, the Diablo Edge, to generate greater power. It comes in 9.5-, 10.5-, 11.5- and 13-degree HT lofts. A sister product, the Diablo Octane Tour (8.5 , 9.5 , 10.5 degrees), comes standard at 45.5".
From The Shop Blog (October 1, 2010)
Callaway's latest driver, the Diablo Octane, is made with a very specific player in mind. "It's really designed for the guy who is interested in distance, distance and more distance," says Dr. Alan Hocknell, Callaway's senior vice president of research and development.
While the new 460cc Diablo Octane shares some features with its predecessor, the Diablo Edge driver—like a chemically-milled hyperbolic cup face and titanium sole plate—the biggest difference between the clubs is the use of a new material Callaway calls Forged Composite.
Created in conjunction with Callaway's new development partner, Lamborghini (yes, the Italian carmaker), Forged Composite is actually bundles of microscopically-thin carbon fibers that are randomly held together in a resin. The material is heated in a precisely-made tool which is then heated, causing the material to liquefy. It's then pressed by another tool so it can ooze into each area of the first tool and create the shape Callaway designers want. (Presto! A carbon fiber forging.)
In the case of the Diablo Octane, the crown of the club is created using this process. You can actually see the material in windows on the crown itself. The weight saved using Forged Composite instead of titanium allowed designers to move more weight lower and farther from the face, which helps to lower the club's center of gravity and make it easier to get ball up in the air. You can actually see the Forged Composite in the head.
Still, the clubhead is lighter overall than previous drivers, so Callaway fitted the Diablo Octane with a 46-inch shaft instead of the standard-length of 45 1/2". The longer shaft should help golfers create more clubhead speed and power.
According to Hocknell, the Diablo Octane is eight yards longer off the tee than last season's Diablo Edge.
Callaway has also made a Tour version of the Diablo Octane. Designed for better players, the head measures 450cc and is attached to the shaft using a hosel. However, the Forged Composite in the crown is not visible in this driver, because, as Hocknell says, better players want as few visual distractions as possible.
$299 (Standard); $299 (Tour)