Greg Letts is the definitive authority on the subject for all mere mortals. Cannot find a link to his site anymore, but here is a copy of his "Everything you wanted to know playing with or against antispin" helpfully hosted by some kind soul...
Any chance you could keep all these videos to a single thread like all other YT channel owners who post on this forum. I appreciate you are trying to promote your channel but there are just too many posts with sensationalist titles.
You did also say that limba is ~ 1.4x heavier than ayous.
Say x is the weight of an ayous core (in grams).
Then a limba core weighs x+4.
(x+4)/x = 1.4
solving for x gives 10g.
Thank you for posting the videos. Regarding the last game against the lefty with SP on bh - he does not seem like an aggressive SP attacker/puncher, nor does he use the SPs to serve as a variation. He seemed to be a bit passive, all he did with them was push your serves or attempt to block your...