Pros and Cons of Platter Mass

Jameswei is correct, his answer is absolutely in accord with my own experience, and I have owned perhaps fifteen turntables .

My current table utilizes a 70 pound platter and must be push started, even though it is air bearing. No doubt it is the quietest, most speed accurate and lowest wow and flutter of any table I have ever heard. Not too surprising, considering the laws of physics.

Fatparrot, does it include a guide to the galaxy?

Onhwy61. In an ideal world, your ideal zero mass platter would be great. In the real world mass is required to smooth out the energy drain from the stylus retrieving heavily modulated passages from the vinyl.

The motor you propose would have to not only turn at exactly the correct speed, it would have to recover in microseconds to any variation in drag coefficient or velocity changes. This might be possible, but for the present time, a heavy platter turned by a belt to isolate the less than perfect motor is the best we have. Much like the designers decided on for your RPM.