td-01 chinese tonearm?


Has anyone got any info on this item. There is one for sale on ebay right now. Uses a wood tonearm shaft with a ceramic unipivot bearing with a string that seems to center or otherwise hold it in place. Interesting looking design, but I'd like to know more.
manitunc
I think the arm Manitunc referred to was the Wilson Benesch Act 0.5:

http://www.stereophile.com/content/wilson-benesch-full-circle-turntable-act-05-tonearm-ply-mc-cartridge-page-2

Mystery solved. The TD-01 arm does, indeed, work like how I described, ie, the string hangs the arm and the ceramic ball does not touch the bottom of the oil pool and only for stabilizing. Seller responded to question.

Hi, the arm being hung by the string and the ceramic ball is not touching the bottom of the oil pool, thank you! Best regards.


Whether that's a good idea or not is up to the potential bidders to contemplate, I merely described what I observed.

____
I would think that there must be something holding the arm in place in the cup other than the ball floating in the oil pool. I would think it was either sitting in the bottom, held by the weight of the arm or the string would go right through, which obviously it does not. the description above makes it sound like the arm is on a pendulum, with the ball just touching the surface of the oil to slow the pendulum action down.

I would hope the ball is actually sitting in the cup and held in place by the weight of the tonearm and the string just provides lateral support.
After reading Q&A's, it sounds like it just hangs and floats. It doesn't sound to stable. To much lateral movement in my opinion. I don't think any is good. It could make odd noises from what I see.
[http://cgi.ebay.com/?ViewItem&item=180623164884]

As I said, this is the same seller who used to have a tonearm that works exactly like the Schroder arm but Frank found out and complained about the infringement to the seller. The designer then put his own twist to the Schroder design by replacing the magnet with a ball in an oil pool a la WTA. Whether the approach is effective or no is still in question.

I don't think it's a problem with the small amount of oil but the tie point of the string is not at the mid-section of the ceramic ball so I believe, as Manitunc observed, there would be too much lateral movement or pendulum action. But if the the ball is touching the bottom of oil pool, there would be no need for the string and simply act like a missionary style unipivot a la Naim ARO or Graham, instead of a spike now it's a ball, which would be similar to a Scheu Tacco. In a classic unipivot, having a string like that would hinder the all kinds of movement, horizontal and vertical. You're better off with no string at all.

This design has much potential but might need further refinement. If any reader has one, feel free to chime in.

_____