Had this reflection that 144hz screens where the only type of screen I knew, that was not a multiple of 60. 60 Hz - 120hz - 240hz - 360hz

And in the middle 144hz Is there a reason why all follow this 60 rule, and if so, why is 144hz here

      • Ashyr@sh.itjust.works
        9·
        1 year ago

        I remember getting ABEC-5 bearings for my blades back in the day. Felt like you were rolling on ice. ABEC-7 was an option, but they were so expensive and the gains were supposedly marginal. Still, I sometimes wonder about what they would’ve been like.

        • flambonkscious@sh.itjust.worksEnglish
          7·
          1 year ago

          Really no different. The ABEC rating is about machine tolerances so they can spin really fast.

          Roller blades and skateboards just don’t go that fast. Also the impacts and crap that they get off the ground damages them far more than what an industrial usage setting would.

          They’re just fleecing customers

          • Ashyr@sh.itjust.works
            2·
            1 year ago

            I had huge 100mm wheels, so I thought I felt the difference between ABEC-3 and -5, but maybe that was just placebo.

            • MeanEYE@lemmy.world
              3·
              1 year ago

              To quote Wikipedia:

              The ABEC rating does not specify many critical factors, such as load handling capabilities, ball precision, materials, material Rockwell hardness, degree of ball and raceway (cone) polishing, noise, vibration, and lubricant. Due to these factors, a high-quality ABEC 3 classified bearing could actually perform better than a lower-quality bearing which satisfies (the stricter) ABEC 7 requirement.

              ABEC only rates tolerances. Nothing else. They were rated bearings you had so they performed better than chinese knockoffs. If you wanted good stuff, go with Japanese, German or Korean.

          • Captain Aggravated@sh.itjust.works
            1·
            1 year ago

            Was big into roller skating as a kid. Had ABEC-7 bearings in my skates. They rolled extremely smooth for the first month or so…then they were normal skates again.

            • Case@lemmynsfw.com
              1·
              1 year ago

              You didn’t clean them weekly?

              Man I did, but they were hockey skates (ice was not a thing here at the time) and I wanted to get every ounce of performance out of them.

              Cleaning bearings, rotating wheels, relacing them cause my feet grew crazy for a while.

              I was a weird kid though. Now I’m just a weird adult.

              • Captain Aggravated@sh.itjust.works
                1·
                1 year ago

                I grew up a rink rat and by then I was one of those guys who would shuffle in speed skates. It was most of what I could do to keep my wheels clean and keep my trucks in that perfect “about to fall apart, but not actually fall apart” position.

    • MeanEYE@lemmy.world
      1·
      1 year ago

      Haha, very little experience with that. But I do know rollerblade bearings are now most popular bearings thanks to low prices because of their initial popularity. Kind of how 18650 cell became popular because of laptops and is now virtually everywhere, including EVs. It’s all playing at large scale with manufacturers.

      Not sure what’s the part you are interested in. I did learn about them in school, so perhaps I do have some knowledge you might find interesting.