Undoubtedly, the backspin dies a lot quicker on the ball when compared to other plastic balls (non-ABS ones). On the other hand, by topspin the ball jumps further forward when compared to other plastic balls (non-ABS ones). The other balls tend to bounce high but not forward by topspin. You can easily test it yourself - just throw a ball horizontally against your racket (tilted circa 45 degrees - exactly the same way one usually tests the grip of the rubber) and let it drop on the table. I compared the D40+ with non-ABS Butterfly, Tibhar, Xiom and those other balls jump significantly less forward than D40+. I find it positive.

Come to think of it.. how can you tell the backspin is dying quicker??

Iskandar

DHS D40+ is made from the new material and the ball is much harder than other ones. Moreover, D40+ is much noticeably heavier. I would guess it is a matter of weight and surface texture combined making it jump further forward by topspin.

Because the sparring partner, doing the same drill as with the ball you're comparing the D40+ with, has an easier time to loop. This is done by doing the drill on the same night, one with the D40+, the other with the ball you're comparing that ball to.

That might not be the spin dying off, though, it might be 1) not being able to generate as much backspin to begin with, or 2) the ball not interacting as much with the rubber. I think someone needs to bring in the marked balls and the high speed cameras before we can tell exactly what's going on. However, the effect is another matter - that can be obvious.

Iskandar

Yeah, we need the high speed cameras... This is weird.. backspin behaves one way, topspin the opposite.

Iskandar