| TB |
Hello, I did make a forum search on this subject. The only information found was about floppy drive used for this purpose. In other thread hard drive was mentioned as good choice for turnatble. I am on the strict budget and electric motors for TT are rather expensive. In this case, I would like to try to use HD motor. I have three motors which came from hard drives. Two of them are from units which were used in servers. I took one drive apart, I removed heads and disks leaving only motor and electronic circuit. Motor works great. It is quiet and has a lot of torque. I think, it can be used with heavier platter. But in this set up motor works for few seconds and stops. After few seconds starts again. It looks like is waiting for the signal from non-existing heads. I would like to build dedicated power supply for this purpose and try to use it in my TT project. Does anyone from members of the forum knows how to build PSU for HD ? What voltage is needed for this purpose: 5V or 12V? Does HD PSU use three-phase supply? ( for the test I have used computer PSU ).
Thanks for the help. |
|
|
| TB |
| And the most important question: how to control RPM? The easiest way for me would be something simple like potentiometer. |
|
|
| audiotux |
Hi TB ,
see Charles Altmann DIY-Turntable on
www.altmann.haan.de
Greetings from Germany
Jürgen |
|
|
| fantasia |
Difficult problem I know and your right, the motors are not cheap,
sort of defeats the whole DIY process i have scavengeged a D.C.
motor from a junked el chepo plastic turntable it has all the goodies like speed controll cost me $10 australian ( but it took a while to find it cheap) there is another site ( audio origami , just do a google search) has used a floppy disc drive motor and posted pics and text on how to do it
regards ;) |
|
|
| HBarske |
| If it's "only" about finding a suitable motor for driving a turntable - this is not too difficult, at least here in Germany. We have several surplus stores selling goodies like the one on the attached picture. It's a quiet running dc motor with built in speed control, sources from - I don't know, maybe old tape deck production. This one has a 10 mm pulley (perhaps 6mm dia in the gap) and has a nominal speed of 2000 rpm, but this is adjustable. There are numerous tt manufacturers out there using those type of motors. You can get this one for 75 cts. Works like a charm. |
|
|
| TB |
| Hello, sorry for the late response. I was out of town. Thanks for suggestions. I will try floppy idea. I have older drive for this purpose. I will still try to pursue HD idea. If it could be done with floppy it should be possible with HD. Those motors are made so nicely it would be a shame not to use them :bawling: . I will post any found information. |
|
|
|
