Aye, pink in particular
Nice piece about platters & bearings.
http://www.enjoythemusic.com/magazine/manufacture/0208/
If I was in the market for a sub Ā£1000 TT Iād be making Emporium a lowball offer for that Lurne TT with the Xenon & fixing it.
Very interesting.
The run down time on the Motus II seems adequate
Iād agree in the case of the Motus but I think in some instances a little constant drag can be useful in smoothing out pulses in the motorās āpullā.
That said, the chap behind this device feels that increasing the drag compromises the dynamic range of the TT.
It isnāt an experiment Iāve tried.
Didnāt the Cranfield Rock have ādragā via the bearing with a viscous liquid?
Yes although Iām not sure it was ever effectively able to lift its platter/bearing as some suggested it did.
I suppose thatās the key word, although Iām not sure how much additional ānoiseā the drag would create (and if that noise was audible)
How much drag does a stylus create running in the groove? Is that audible and, if so, how can it be compensated for?
As you can see, I donāt know the answers to these questions
Subjective i know, however the ābestā sounding bearing i tried in my diy Lenco projects was one with a deliberate drag, a tight tolerance plus a honey type lubricant (a very thick oil). It was the one that also stopped in the smoothest way.
Did you make the bearing or was it a commercial one?
Same q as above
Somewhere inbetween. Was made by a chap who posted on LH. I had an early one, he tried to make a business out of it but failed.
Ah, I remember
As well as stopping in the smoothest way it also had the shortest spin down time. I must have had 6 different bearings in total. I kinda concluded its not how long it takes to stop but how it stops that is important.
Probably bollocks but there you are.
Edit to add. My 1200gr actually spins backwards slightly when it stops which is CRAP. I donāt think its bearing related more likely some sort of magnetic cogging.
The Kronos has an inverted bearing with a single ceramic ball running in an oil bath.
So some sort of non contact, possibly magnetic system for resistance to the motor turning would therefore be ideal? Someone should look into thatā¦
If there was a right way theyād all be doing it.
Physics neans compromises and as he says, throw aesthetics in the pot as wellā¦
I think he was referring to Garrardās eddy current brake
Oops, yes⦠I should probably learn to read. One dayā¦
typing would be good too