REVIEW: GAME CHANGING TENNIS DEVICE | Head Ball Pressuriser | PH Tennis 

Yes. That’s kind of fishy if we are not sure how it bounce before the treatment. 😅

yes that would be good to hear. I have the Wilson Trinity balls, but so many people don't like to use them even though it bounces great but b/c these are pressureless balls... I think there may be bias towards repressurized balls as well :( And these people I'm playing w/ are supposedly big on recycling and the environment too btw...

I have it, it’s useful if you play once a week, because you need to leave the balls inside it for at least days before they come back to normal and to last 1h sessione, but if you play with your balls once a week it’s an excellent product

@@gaetano4143 Days! you have the same model? I know there were previous versions. Did I miss a time skip in the video? It looked like it was just a few minutes?

That is not true

@@rsh8057 if you leave the balls for just few minutes it looks like they are ready to use, but they lose pressure very fast, I made lots of tries

ok have to try that ... because i just tried it with a few older balls with different levels of a depressured state ... did it strictly according to the manual but I could not recognise any recovery of pressure with any of the 9 balls I tried it with. what's it with the pump it up to max 30 PSI hint in the manual? what theoretically if you pump it above that?

Based. In theory, you'll you'll need to add some air to the tube as that process goes on. The quantity of gas inside each ball needs to roughly double compared to the 'dead' state (and yes, that has to take time, as you are saying), but also the pressure BETWEEN the balls inside the tube will equalise with that INSIDE the balls at a value well below the initial pressure created by the pump (because the tube is quite small).

Thanks for insight. Much appreciated

do they stay repressurized for long?

@@Lunchpgap As long as you keep them inside and the o-ring sits tight. If you don't use them for a long time, maybe check the pressure from time to time. I never had to do a check, always worked perfectly. With enough time and high pressure it can even revive balls as shown in the video.

@@sebastiandomagala9233 right but how long do they last outside of the tube?

@@Lunchpgap Just as long as if you had no tube at all.

Just glue it back on ;-)

...that's not my bag, baby...

It actually does not repressurize old balls. It is actually just to help balls stay fresh longer. Tennis balls are pressurised at higher pressure than the air around us. So if left in normal air pressure, the air inside tennis balls slowly leak out, because higher internal pressure pushes against the lower external pressure. It keeps pushing and leaking until the internal pressure becomes the same as external pressure. Which is why balls lose their bounciness over time. But if you store balls in this tube, you can pump it such that the external pressure is equal to the tennis balls' internal pressure. If both internal and external pressure are equal, no one side is pushing against the other. So ball remains pressurised until you play again. (This is why tennis balls are sold in pressurised can and when you open those, it is like opening a can of soda.) This cannot repressurize balls because if you pump until the external pressure is higher than the ball's internal pressure, the ball will collapse (much like what happened to the bottom ball in this video). The air inside the ball just get squeezed. Air does not go from the outside to the inside of the ball.

@@marcuswong3050 If the ball leaks air then air can obviously go both ways. It seems like the pressures in the tube and the ball just even out. " It keeps pushing and leaking until the internal pressure becomes the same as external pressure. " It sounds like the same thing but vice versa.