Adams XTD Driver
-I have been working with these for about a month and have been very impressed with the results. The only drawback has been getting the higher CT (250+) which seem to be Cherry Picked before I have gotten them. Hopefully this has been rectified and I look forward to pushing these beasts going forward because they really are long.
In R & D terminology XTD stands for eXtra Time and Dollars. Adams certainly didn’t spare anything on this line. As Adams Golf is now fully integrated w/ their new owners everyone there is more focused on the job at hand. Most people don’t know that before the TM purchase Adams Golf was spending more per year on R+D then Callaway and Taylor Made COMBINED (feel free to check past yearly statements of all 3 to confirm). Read on for more technical information or skip to the bottom for The Good Stuff.
Do to the overwhelming success of the slotline technology in terms of both higher ball speed and forgiveness off the face, Adams has now extended that technology into its drivers. As I’ve stated numerous times in past posts, drivers have really hit a wall in terms of added distance due to the limitations imposed on them by the USGA. Driver improvements over the past year have been directed more towards lowering spin and increasing loft while also adding in the gimicky “adjustability” capability. The holy grail of any driver design is to produce a head which provides minimal spin (based on swing speed), optimal launch, and maximum forgiveness. The USGA limitations of these factors involves;
C.O.R. – The Coefficient of Restitution (COR) is the measurement of how “bouncy” an object is during impact. An object with a COR of 1 collides elastically, bouncing perfectly with no energy loss. While an object with a COR of 0 is said to collide inelastically, effectively “sticking” to the object it collides with. Mathematically, it’s measured as the ratio of velocities before and after an impact. When thinking in these terms, it’s easy to see that a higher COR means a faster ball speed after impact. And a faster ball speed means more distance. The USGA limits COR to 0.83
C.T. – Coefficient of Time which is a sub-factor of C.O.R. and in lamens terms means how long the ball stays on the face at impact. When struck the longer the ball stays and compacts on the face the faster it will be released;
“239 micro-seconds was the approximate amount of contact time that corresponded to a COR value of 0.83. 257 micro-seconds was the approximate amount of contact time that corresponded to a COR value of 0.837 – the actual maximums that are often quoted (allowing for manufacturing tolerances).
So now for the good stuff
So the optimum/conforming barrier for C.T. is 257. Due to limiting restraints during the manufacturing process most manufacturers shoot for an average C.T. of 240 w/ +/- 10 u.s.
-Taylor Made Consumer CT Target = 242 +/- 8 u.s.
-Taylor Made Tour CT Target = 245 +/- 5 u.s.
So now you know why some of the exact same drivers perform better than their identical counterpart. Your friend who has the exact same driver doesn’t know that his face tested out at 250 ct while yours tests out only at 234 ct (assuming the broad range scenario of a standard TM consumer driver of +/-8 u.s.). I can tell you from experience that when a new box of heads is delivered to a tour trailer the pro’s scramble over each other trying to cherry pick those heads marked with the highest possible C.T. (and yes those guys are always looking for more yardage just like you and I).
The biggest driver manufacturers typically pull 4% of finished production to test for all USGA conforming standards. This is done not so much as checks & balances but more importantly to avoid the fiasco that Cleveland Golf went through years ago with their Cleveland Hybore Driver which had something like a 30 u.s. window (+/-15 u.s.) so that a larger proportion of those heads tested came up as non-conforming. The expense that Cleveland Golf had to go through to issue a re-call and change heads was enormous.
Now the BEST stuff;
Due to the fact that Adams does not produce the massive amount of driver heads as their competitors they can better design and manufacture heads with significantly tighter tolerances. The new XTD Driver line will be produced with the following guidelines;
-A revolutionary new and improved manufacturing process will guarantee that the XTD will operate in a 7us (+/- 3.5us) window which will push the 257 usga limit (which will guarantee the XTD as having the hottest face in golf).
– Instead of batch testing a small % of each finished shipment (standard AQL is 4%), ADAMS WILL CHECK THE CT OF EACH AND EVERY HEAD UP TO 4 TIMES DURING THE MANUFACTURING PROCESS TO ENSURE THAT THEY HAVE THE HOTTEST FACE IN GOLF.
In summary – it just flat out doesn’t get any better than this.
Note: The XTD line is interchangeable (driver, fairway, and hybrids) and will be compatible with the same shaft adapters as the Taylor Made R1 series.