You wanna innovate? Make a good hi torque turntable

[Kiss the Groove]

Clearly, this is the solution you've been waiting for:

A working turntable made out of Legos

Adding the Lego feedscrew and cutterhead suspension is an exercise left for the reader...

-- KtG

[ROLANDJAYS]

well now I just give up !

[opcode66]

Wonder what the torque is rated at? LOL

[Ciuens]

I've been thinking of using a motor like that.

http://www.aliexpress.com/item/DYS-BGM8108-90T-5kg-Torque-Brushless-Gimbal-Motor-for-DSLR-Red-Epic-Camera-FPV-Aerial-Photography/2028248673.html

5kg of torque. 42 poles. No noise. very accurately.

[Sillitoe]

That looks pretty good and the price is right!

[oldskoolhead]

so are you saying that for instance the 1.5kg of torque on an sl1210 is not enough for vinyl cutting as im sure i remember vestax produced a bolt on cutter for the 1210 many years ago?
and if this is the case would the 4.5+kg featured on the new pioneer plx 1000 be sufficient?
im not sure what the weight of the platters are as i havent weighed my technics one and i dont have the pioneer one to weigh

[Sillitoe]

Hi oldskoolhead, people cut on 1200s with Kingston dub Cutters, T560s and homemade lathes.
That pioneer looks to be a step up in terms of torque. The less wow, flutter and rumble the better.
There's lots of info on the board about this stuff.
Cheers
James

[Steve E.]

See my update to the original post. I may have repeated bad information about the old Technics SP02s and SP10 Mark iii's.

[Sillitoe]

This guy restores turntables, it looks like 15 poles for the mk3.
http://amp8.com/amp-etc/record/technics/sp-mk3-g.htm

[Sillitoe]

These look good...http://www.nsk.com/products/precisionmachine/megatorque/

[JPJones]

Even though I don't know much about lathes or cutting, I do own an SP-10MK3 that I refurbished myself, as well as a few MKII and MK2As. I thought I'd drop-in and share some information.

The MK3 motor is 15 poles, same as the MKII/MK2A. The electronics are very similar to the MK2A, though the MK3 has two DN860 ICs with the variable pitch IC, MN6042, between them. The MK2A, not having variable pitch, doesn't have an MN6042. And, of course, the electronics in the MK3 are beefed up quite a bit over the MK2A.

The proprietary ICs used in the MK3 (DN860, AN660, AN640G, MN6042) are used in the SP-10 MK2A (minus MN6042 as noted above) SP-15, and SL-1300/1400/1500/150 MK2. Only the MK3 uses two DN860s. It's also worth noting the MK3 service manual has quite a few errors in the calibration procedures. Some of the information is transposed and some simply doesn't seem to work. I pieced together most of the needed information from the MK2A and SP-15 service manuals. The only setting where I couldn't find any information that seemed to work was Offset Voltage, though via trial and error I found a method that appears to work well.

Though I'd love to, I've never seen an SP-02 in person. I have read and seen in a few pictures that the chipset appears to be the same as the MK3. I did stumble across the below information in a German hi-fi forum, which I thought you'd find interesting. I tried to put this through online OCR and Google Translate, but it was more confusing after that than in its original form.

[DjMikiRia]

An unsaid source of torque is treadmill motors. They are powered by 85 - 135 vDC and have torque for days (1-3.5hp around 2000rpm). Almost all of them are brush & commuter requiring extreme weight for inertial dampening. I have one I was going to use as a DC generator (they are great for doing that as well). There should be a lot of used on the market as you know how so many treadmills go unused. NOTE: Many are reverse thread.

sincerely,
Mikiness