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In the Forum: Analog Playback
In the Thread: Copper Mat on a Micro Seiki Gun Metal Platter
Post Subject: Some ideas....Posted by Romy the Cat on: 10/30/2017
 Stitch wrote: |
| The motor can't hold the specs forever…..The motor
itself drives a HS-80 easily. |
|
Yes, and no. When people
talk about it they forget to note that it is not a motor problem most of the
time but the interface between platter and motor. The tension of belt (tape,
string or whatever you use) between the motor and platter is a very key and it
is high neglected subject. One person loves to have high tension belt between motor
and platter, another love to have high tension connection between motor and
platter, use high power motors with a lot of logic in motor drive, other person
use super light belt that literary slips over the platter and no brain in motor…
there are many scenarios available in it but generally if you have a very light
tension between motor and platter then the motor will live longer then you do.
I personally drive my motor
VERY light and my belt is dried by cover with baby powder and hands very loosely.
Interesting that my belt does not sit on the side of the platter but run over
the indentation at the very top of the platter, where the platter diameter is smaller.
I feel that running a smaller diameter mage the gyroscope effect of the platter
much stronger. The disadvantage is that it take a while to speed to stabilize.
Still with the mass of the platter and the lightness of the belt tension the
belt does not really drives the palter but just compensates the loss of inertia…
| measet wrote: |
| I didn't have chance to set up the stable speed on my
neither RX-5000. |
|
Measet, one more tip I would like
to pass to you. Do you have a Cat in home? If you do not them you need to get
one. Anyhow, for whatever reasons Cats find the air pipes to Micro pneumatic suspension
is very attractive and they sometimes bite the air pipe. If they do then the
pipe might have a very-very minor leak, you will not be able to see or hear it
but it will drop the air suspension pressure and will affect the disk stability.
So, what you need to do it to make the testing. Here is how I do it. Run you TT
at 33RPM and then remove the belt, presumably it hangs lightly. Then measure
how long time it will take the platter to have completely stop. Let presume
that it take 5.5 minuts. Then take you air pump, connect it with a new very
short air pipe and do the same experiment. If you have shorter time that take platter
to stop them you main air pump is compromised. I have a pipe connector that I switch
to test my pipes. I do not do it lately as nowadays my air pile are wrapped I past
the only reasons why I have problem with stability is because my Cats eat my
pipes. Below are a few link that you will fine useful.
https://www.amazon.com/gp/product/B071NNNWVH/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01MFX7LBP/ref=oh_aui_detailpage_o09_s02?ie=UTF8&psc=1
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