TIGER PAW "Tranquility" (Magnetic Bearing Repulsion...) Any Good?

@varyat

That’s good. Unfortunately a few of the other users have reported problems with this issue after some amount of use. I would question whether the magnetic field lessens over time ( if this is possible??), resulting in some slight slippage?? Personally, I’m going to sit this one out until there is more definitive feedback on this issue..and after some amount of time has gone by. In the meantime, I will certainly be interested in following the various threads etc., regarding this mod.

@daveyf... In answer to your question, the Linn dealer in my town refused emphatically to inspect or adjust my LP12 because I had replaced the original mat. The other Linn expert in my town did replace the grommets and set the springs’ tension. Though when I arrived to pick up my LP12, it was playing the label of a record. The paper label. The technician then cranked on one of the spring tension screws in my presence and suggested that I buy a non-Linn motor. I will not take my LP12 back to that shop.

In the absence of any trustworthy expertise I have had to do my own research and decide how best to bring my LP12 into the 21st Century. A positive, if unintended, consequence of the above circumstances is that I did discover the TP Tranquility. Having heard the improvement, I would add Tranquility if my LP12 had a Cirkus bearing. And I guess the Cirkus will be my next purchase in the near future. 

Regarding the slippage issue, it might be that the lower magnet could move if the locking collar is not sufficiently tight. On my system 1/4 revolution of the lower magnet was the difference between scraping and not scraping. I would also set the lower magnet height with the heaviest LP in my collection on the TT platter with the motor running. It’s been just a few days, but I still listen for rubbing after most album changes. Just a thought...

@mre28m5   Wow, you have some really sh---t dealers in your area!
Wouldn't work on your table because you replaced your mat...what a prima donna! 
Like I said above, I will be watching the various Tranq users and their posts over time, I sure would like this mod to be as great through time as everyone is saying it is now. Price for a mod with that kind of upswing in SQ is really quite reasonable, IMO. We shall see though.

I have a great deal of experience with this as it is a key feature of my turntable bearing design. Relieving the platter of much of it’s weight reduces friction and thus make the motor work less. This frees up motor torque towards driving the friction in the record groove. Subjectivity less bearing friction often results in a "faster" sound as described above. A test for this is to spin the platter to 33.3 rpm without the belt and time it till it hits zero, then do the same with the magnets to measure the hopefully lower friction. My tables on a good day will run over 7 minutes for example.
Regards
Bruce
Anvil Turntables

As far as stray magnetic fields are concerned there is a shielding effect when using opposing magnets but you still have stray fields And the only thing that will disrupt them are iron and nickel alloys.  Certain cartridges near moving magnets can hum but I have NOT seen this design and the manufacturer probably accounted for it. 
Also, regarding speed you will have less belt pull and wow flutter and drift should improve with ANY controller.