Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ.
In Reply to: Language T4 can understand.... posted by tubesforever on May 20, 2009 at 23:30:06:
"Two years ago you said that an SiNi ball would potentially destroy a polished steel thrust surface."
It really depends on the applied load. SiNi WILL destroy a polished steel thrust plate given enough load or cycles.
"After more than a year of continuous use there is no more than a polish mark where the SiNi ball engages the steel. There is no shearing, no material transfer, and no damaged materials. The bearing performs with a reduced noise floor, it exhibits improved micro dynamics, clarity, and focus. Even untrained ears can hear the improvement in the sonics."
Unless you left your turntable on for the entire year you'll come nowhere near the point on the S-N curve where you're going to do damage.
BUT. When you reach that point, make sure you're using a bearing system that you don't care about. I'd actually be more worried about the bearing shaft, as that part is usually not easily replaced. A SiNi ball will destroy your polished steel (polishing really has very little effect on wear). It is a complicated system that depends highly on bearing diameter, loading, and number of cycles.
No one can get around physics.
"You were wrong two years ago Mark. Can you admit you are wrong?"
Two years is a very short time for a bearing of this type. Leave that player on continuously for 1 or 2 million cycles and take another look.
"Are you willing to actually test your opinions or do you prefer to simply attack me personally?"
Most of this stuff was worked out well before I was born. I don't think anyone is personally attacking anyone else.
"Mark, you pulled the original material because it did not apply to mirror polished thrust surface. That is the reality. That is what I clearly understand."
Polishing has a miniscule effect on hardness, although a measurable effect on wear. It may increase component lifetime by 50% or so, but once again. It is not the thrust plate that I'm necessarily concerned about. It is the bearing shaft. This may be easily, and cheaply, replaceable on the 1200, but is not on most other players.
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Topic - Anyone interested in an improved SL1200 main platter bearing? - tubesforever 00:12:00 05/18/09 (18)
- Tubes, I have an old SL-1200 spindle bearing lying around. - Ugly 11:14:39 05/19/09 (0)
- RE: Anyone interested in an improved SL1200 main platter bearing? - Panelhead 19:51:49 05/18/09 (0)
- A word of warning regarding spherical thrust bearings - Mark Kelly 17:49:46 05/18/09 (7)
- RE: A word of warning regarding spherical thrust bearings - Ugly 11:26:52 05/19/09 (2)
- Translation for the non-technically minded: - Mark Kelly 20:42:38 05/18/09 (3)
- RE: Translation for the non-technically minded: - d to the g 20:35:41 05/20/09 (0)
- Translation for the obviously technically minded. - Mark Kelly 22:21:33 05/20/09 (0)
- Ignore this if you wish to do so.... - tubesforever 22:38:12 05/18/09 (1)
- Try again. - Mark Kelly 23:03:29 05/18/09 (0)
- RE: Anyone interested in an improved SL1200 main platter bearing? - telewacked 16:15:44 05/18/09 (0)
- I would offer mine up for you, Jim... - JimK 05:47:52 05/18/09 (6)
- Look forward to seeing you Jim! - tubesforever 11:05:59 05/18/09 (5)
- Are you going to be using - Muzikmike 11:47:09 05/18/09 (4)
- Their are a lot of ceramic bearing materials to select from.... - tubesforever 22:53:00 05/18/09 (3)Follow Ups
- RE: Language T4 can understand.... - d to the g 08:45:07 05/21/09 (0)
- Polishing in my application.... - tubesforever 11:01:08 05/21/09 (0)