lewm
Responses from lewm
| Tables That Feature Bearing Friction Dertonarm, For your consideration, an idler-drive in which the motor force is applied to the underside of the platter, in the vertical plane. Thus no horizontal force needs to be cancelled. No string needs to be chosen or "adjusted". In short, I o... | |
| Tables That Feature Bearing Friction Dertonarm, You have written that there should be no force on the bearing in the horizontal plane, and elsewhere you have written that use of more than a single motor is a no-no. (I agree in both cases.) But how would you achieve the former goal in... | |
| Tables That Feature Bearing Friction Syntax, In that third photo, is the platter on the right driving the platter on the left, as it appears? This is in keeping with some of Mark Kelly's teachings on "belt creep" and how to prevent it. Anyone interested in this topic should search on... | |
| Tripods as turntable or component base? Reason for a tripod or 3 feet under a piece of gear: (1) Easiest to level; (2) The weight of the supported object will be evenly distributed among the 3 pods, once the object is level and if the tripod is properly implemented, (3) Fewest paths for... | |
| Tables That Feature Bearing Friction The string "belt" on the mammoth turntable in the photo is WAY too long for optimum control of platter rotation, even if the string has no stretch at all, but I guess the inertia of the humongous platter mass compensates for this problem to a degr... | |
| Tables That Feature Bearing Friction What I wrote was that any effect of stylus drag on speed will in part be a function of the distance of the stylus from the spindle (not "distance from the stylus"). I was referring to the mechanical advantage gained by applying a force some distan... | |
| Tables That Feature Bearing Friction Dertonearm, You wrote, "Stylus drag is a very small sliding force in constant motion and is - coupled with any serious platter (of course not if the LP lays just on the platter and is not firmly clamped down) - really neglectable. Its a force smal... | |
| Turntable in 20 K$ price range - Design & Music Davidri, Given your criteria, and since you, like most here, appear to believe in a linear relationship between retail price and sound quality, why not just pick between your two choices based on appearance? They are both excellent, and no one is ... | |
| Tables That Feature Bearing Friction Dertonearm, I don't know whether you have already done so, but you might like to go over to Vinyl Asylum and search on the musings of Mark Kelly, a very smart fellow, on the various platter drive mechanisms and their pros and cons. Of additional i... | |
| Tables That Feature Bearing Friction Thanks. Very interesting, indeed. I do recall hearing rumors about La Platine platters "falling down", due to loss of magnetic field strength, but none of my (two) friends who own the table have had that problem. There are a few other brands that ... | |
| Tables That Feature Bearing Friction Dertonarm, Are you saying that the vertical magnetic suspension of the La Platine per se simultaneously offered a form of eddy current braking of the rotation of the platter in the horizontal plane? If so, why would that not also be a feature of t... | |
| Building high-end 'tables cheap at Home Despot II Hi Ian, Very nice job on your slate plinth. I see you are also using an RS-A1 tonearm. I have one, too. It's a great choice for a slate plinth, because no drilling is necessary to install one, not to mention that the sound is excellent despite or ... | |
| Tables That Feature Bearing Friction Come to think of it, Win, I see your point. I observed the herky jerky movement of my SP10 motor without the platter. It almost threw itself off the benchtop where it was sitting. So clearly, the mass of the platter smoothes out the operation. Fur... | |
| Tables That Feature Bearing Friction I don't know of any direct-drive tables that deliberately use this strategy, except possibly in their electronics. Can anyone think of any? | |
| Building high-end 'tables cheap at Home Despot II Re isolating the motor: that is one of the major benefits of the PTP3 in a slate plinth, IMO. And that solution does not require any Rube Goldberg devices in between the motor and everything else. (Rube Goldberg was an American cartoonist who made... |