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ijpdesign 11th September 2012 05:01 PM

turntable design and build
 
Hello all-
I am looking to design a turntable. I am an avid woodworker but only a fair engineer in terms of exacting specifications. I am hoping that someone out there might have some plans so I could design a turntable. I am looking for something along the lines of what the clearaudio innovation has.
I live in Los Angeles and would be willing to meet with anyone in the area that has built before for some tips and tricks as well as getting a better understanding of what I am about to involve myself in.
I have looked into quite a few diy sites but mostly I find pictures of finished projects and not a whole lot in terms of a full set of plans and specs.

Thanks for taking your time to talk to a newbie.

kevinkr 11th September 2012 05:04 PM

:cop: Moved to Analog Source where turntable construction projects are generally found - as it will get a lot more attention here from the sort of people who can help.

ijpdesign 11th September 2012 05:06 PM

Thanks Kevin

bbftx 11th September 2012 06:06 PM

1 Attachment(s)
Hi ijp,
I think the Clearaudio Innovation design is a great model for your DIY project. I have a thread drive turntable that offers a couple of variations on the Clearaudio layout that you may want to consider. These differences would make it a little easier on you from a fabrication perspective and offer some sonic advantages as well for a DIY design. The Acoustic Signature Final Tool that I have puts the motor in an enclosure separate from the platter and bearing --- easier to isolate the motor noise and vibration that way. It would make your woodworking easier too (if you're planning to use lots of wood in your build), in that you could just build a simple round enclosure for the motor if you wanted, and a simple round base for the bearing and platter.

The tonearm mount is an outrigger arrangement that bolts on to the bottom of the platter base. Again, simpler to fabricate than a completely integrated base that holds motor, platter, tonearm mount.

Your key components are the motor and bearing.
I'm sure there are other threads in this forum that cover possible options and recommendations for those components.

I would let your woodworking creativity drive a lot of your choices around how you want the enclosures to look. I would go for the simple round design, but you might want to do something a little more creative based on your skills. If I did a wood base, I'd strongly consider ebony. I like the look, it machines well on my lathe (metalworking), and my sense is that it's denser than most wood, making it a better analog to the heavy metal foundations that most people like to use for their turntables.
Cheers,
BB

AuroraB 11th September 2012 06:37 PM

Some inspiration for a woodworker :)

Teres - Gallery

ijpdesign 11th September 2012 06:44 PM

BB
do you have plans for the thread drive turntable that you have posted? I am mostly concerned with the dimension requirements in regards to the armboard to platter relationship, and as I understand I need the motor spindle to be level with that of the bering so there is no wobble in the table. Did you make that turntable? Its really cool.

Aurora-
I have seen that gallery before that is quite the beautiful TT and I love the arm board.

AuroraB 11th September 2012 06:52 PM

Some more
Plinth_Builders_Gallery

If you do a more extensive search, also on DIY tonearm, there are some very interesting projects out there, and a fairly extensive collection of information.

The problem is that therer a several "conflicting" camps odvocating "their" solution ... ;)

ijpdesign 11th September 2012 06:53 PM

BB-
Do you have the dimension of the platter diameter from your project? I am guessing this is the best place to start and then I can work both up and down from this dimension.
thanks for your help.

ijpdesign 11th September 2012 07:04 PM

Aurora -
I frequent that site quite a bit and love some of the designs there, of course none actually give any plans for their designs. Loads and loads of great looking projects though. :D

At one time I came across a drawing (well a plan drawing anyways) of a DaVinci turntable and have been trying to extrapolate from the plan some info but only having 1 sheet doesn't really help but it sure does pique my interest even more and of course create far more questions!!!

http://www.soundscapehifi.com/images...nsions_LRG.jpg

AuroraB 11th September 2012 07:46 PM

I ventured into this several years ago, when the Teres project was still a DIY thing. I also made a bearing along the original drawings, but didn't take it further, for several reasons. I also have a Thorens 125 and a Lenco 85, so I'm not pressed.

A central part is the bearing, and one of the choices you'll have to make is to buy or make one - or have one made.... Bearing and platter combos can also be bought.....but that also leaves you with the question of a suitable motor with supply and/or controller.

Several classic designs are popular as upgrade projects. Idler wheel models like the old Garrards and Thorens 124 seems to popular models, as is the Lenco 75. With good woodworking skills some very nice upgrades can be made.

If you really need a drawing for a platter or bearing, I have some on another disc - wil take me some time to dig through...


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