This user has no status.
Member
There was a recent discussion on that very topic that I found very interestingFWIW with the plastic ball it doesn't seem like tackiness is a great tradeoff. Coefficient of friction is always between materials, and it's not linear. The rubber and ball interface have load and speed sensitivity, so a large % change at low load and low speed might not be very much at all at high load and high speed.
I'm sure you always get more friction with tackiness because tackiness is adhesion ie: increased load sensitivity at low load and a much higher friction at low load, but what it also does is linearly (or maybe nonlinearly in the case of TT balls, I don't know) decrease the output normal energy, because part of it "sticks" to the rubber.
In the cell ball days I feel like it was a fine tradeoff because the extra spin especially in touch shots was worth it, but the speed tradeoff seems much higher than the spin benefit in rallying and even finishing shots. I've stopped looking for "rubbers which are as tacky as they used to be".
It looks like the equipment is converging towards the "new" hybrid concept of very grippy barely tacky with hard sponges, from both sides, the eur/jap and chinese sides. I remember someone making a comment in one of the discussions that the newer batches of Hurricane are basically hybrids now. I see their point now.
What rubbers are you looking into these days @Archosaurus ?