Peter, I use the Roadrunner/Eagle to control my Lenco. It is comforting to see the RR display 33.333, every once in a while. In practice, the speed takes about 5 minutes to stabilize usually around 33.3, then 33.33, then flirting with 33.333, maybe after 10 minutes in. I think the bearing lubricant may be warming up during this early time. But I don't understand why you would want to "control" the Denon DP80 or the DN308 motor with the RR feeding back to the Eagle. Wouldn't you want to leave that in the hands of the built-in feedback mechanism which is making constant readings (not just once per revolution) off the tape that is attached to the inner circumference of the platter? You could certainly use the RR for a numerical readout of speed without having it control the motor; maybe that is what you are doing. (I don't think anyone would hear a problem with 33.334 vs 33.333. I don't even hear any significant difference between 33.3XX and 33.333. (Talking with respect to the Lenco.)
Chakster, I am of the belief that a cylindrical plinth that has a diameter minimally greater than that of the platter is optimal, regardless of drive system. I think our conventional rectangular plinths with a large surface area beyond the platter area add a subtle coloration that is appreciated when one compares the sound to the cylindrical type, which sounds most "open" to me, for want of better words to describe it. But I do not associate OMA with originating the idea, at all. Nottingham and Verdier and also Galibier, Teres, Redpoint, etc, beat them to it.
