- Element ZR40

First Impressions
The Dyno-Thane Element ZR40, released in 2006, comes in a very clean Silver Pearl design. Beneath the surface sits a modified symmetrical core, the Dynamic FBT 2-piece Core. For this particular model, the core was installed inverted compared to its predecessors in order to produce a tighter, more predictable ball motion. The hard numbers show a medium radius of gyration of 2.540 along with an appealing differential of 0.054. These values point to solid flare potential at moderate length. The centerpiece of the ball is the Soaker XTC Pearl Reactive cover, with XTC standing for eXTra Control. Out of the box, the surface is finished at 800 grit polished. This combination of polished pearl material and the inverted core lets the ball glide through the heads extremely clean and with little friction, releasing its energy only later down the lane. The design aims primarily at delivering an aggressively controlled and highly repeatable reaction at the breakpoint.
Comparison Compared directly to other models of its era and to modern standards, the Dyno-Thane Element ZR40 shows a remarkably calm character. Put up against its in-house predecessor, the Dyno-Thane Element Au79, it is immediately apparent that the ZR40 reacts more softly at the breakpoint. While the Au79 was known for its sharp and at times hard-to-control change of direction, the ZR40 offers a steady, dependable arc toward the pocket. Compared to a modern benchmark like the Storm Hy-Road Pearl, there are clear parallels in the clean skid phase through the front part of the lane. However, the Storm ball tends to react noticeably more angular off dry boards, whereas the Dyno-Thane Element ZR40, thanks to its special Soaker XTC cover, reads the midlane earlier and effectively dampens overreaction. Drawing a further comparison to the Brunswick Melee Jab Pearl, the Brunswick ball reveals a more modern core that generates considerably stronger dynamics in its motion. The Dyno-Thane Element ZR40, by contrast, stores its rotational energy very linearly and develops a strong but always predictable hook only in the last third of the lane.
On the Lanes In practical use, the Dyno-Thane Element ZR40 is designed for medium to slightly drying oil conditions. Thanks to the polished 800 grit surface, it works excellently in phases where the heads are already well played in and balls with dull surfaces lose energy too early. If you're looking for an extended skid phase and a well-controllable backend reaction, you'll find a dependable tool here. When transition sets in over the course of a tournament or league session, the pearl cover lets you move deeper into the lane and play over the dry boards without the ball jumping unpredictably. As soon as the ball meets friction at the breakpoint, it develops an even roll phase that should provide excellent carry. For heavy oil or very long patterns this model is not the optimal choice, since the polished cover would build too little traction there, which can cause the ball to slide through. If you throw at medium ball speed, though, you'll benefit enormously from the forgiving nature of this design on typical house patterns.