Lewm, I think you may be mistaking me for someone else with your first comment directed at me, however I do still appreciate your job offer.
Although I do believe DDs came a long way with control of speed, it is not all that diffult a concept to understand why a belt drive in general is less immune to 'cogging' than a direct drive. Left uncontrolled, a direct drive would pass from pole-to-pole in a 24 pole motor approximately once every two seconds. with a roughly 38 inch perimeter circumference that would equal about every inch as well, and should be quite obvious to someone whose powers of observation allow them to visibly detect stylus drag on a 22kg platter. The belt drive motor spins at up to 600 rpm in some cases with a circumference of the spinning shaft of less than a cm in most cases. The perception of cogging is now in milliseconds and then it is insulated by the belt. That would be the main difference.
TTWeights is a CNC machine shop in Ontario, who about 2-3 years ago started making weight clamps for turntables, perhaps as a bolster in the downturn of the auto industry. Im guessing the owner is an audio enthusiast who picked up on the current trends, who knows if he has the knowledge to design a really good turntable. He has gone very rapidly from machining record weights to purporting to be a designer of high end turntables.
'Stylus drag' seems to be the principal theoretical benefit of rim drive designs. Personally I think it's hooey. If it was constant it would not be perceivable and to suggest a minute change in a track would alter the speed of a turning 22 kg massive platter is frankly not believable.
I'm certain I will enjoy the KAB if I do pick one up for a try. I might even take up scratchin'.
Although I do believe DDs came a long way with control of speed, it is not all that diffult a concept to understand why a belt drive in general is less immune to 'cogging' than a direct drive. Left uncontrolled, a direct drive would pass from pole-to-pole in a 24 pole motor approximately once every two seconds. with a roughly 38 inch perimeter circumference that would equal about every inch as well, and should be quite obvious to someone whose powers of observation allow them to visibly detect stylus drag on a 22kg platter. The belt drive motor spins at up to 600 rpm in some cases with a circumference of the spinning shaft of less than a cm in most cases. The perception of cogging is now in milliseconds and then it is insulated by the belt. That would be the main difference.
TTWeights is a CNC machine shop in Ontario, who about 2-3 years ago started making weight clamps for turntables, perhaps as a bolster in the downturn of the auto industry. Im guessing the owner is an audio enthusiast who picked up on the current trends, who knows if he has the knowledge to design a really good turntable. He has gone very rapidly from machining record weights to purporting to be a designer of high end turntables.
'Stylus drag' seems to be the principal theoretical benefit of rim drive designs. Personally I think it's hooey. If it was constant it would not be perceivable and to suggest a minute change in a track would alter the speed of a turning 22 kg massive platter is frankly not believable.
I'm certain I will enjoy the KAB if I do pick one up for a try. I might even take up scratchin'.