I took the motor and platter out of the cheapest Denon tt, pure plastic.
Made a new bearing out of a 6head hifi video drum, power supply from a PCU and new plinth. Tonearm was a carbon fiber arrowshaft I got from a friend. Well tempered suspended in a bath of oil with the unused part of the video drum as dampener. Diy headshell etc. Sounded really good as long as I did not touch it. Then there was a nasty hum. Fun project!
Made a new bearing out of a 6head hifi video drum, power supply from a PCU and new plinth. Tonearm was a carbon fiber arrowshaft I got from a friend. Well tempered suspended in a bath of oil with the unused part of the video drum as dampener. Diy headshell etc. Sounded really good as long as I did not touch it. Then there was a nasty hum. Fun project!
Not at all, this often the most cost effective way of creating a decent TT. I was lucky enough to find on ebay a new, very slightly marked
platter from a Pro-ject RPM Carbon, along with a brand new bearing. I fitted a pair of neodymium ring magnets so that the platter just floats without a record fitted. I use a large Papst 3 phase motor, with an SG4, to provide the motive force.
platter from a Pro-ject RPM Carbon, along with a brand new bearing. I fitted a pair of neodymium ring magnets so that the platter just floats without a record fitted. I use a large Papst 3 phase motor, with an SG4, to provide the motive force.
I have been planning my DIY turntable for a while. My budget is under $200. So far, I have bought a http://hurst-motors.com/lyd55directdrive.html P/N LYD55T-024DS and a shaft and bearing from Mc Master Carr shaft: https://www.mcmaster.com/shafts/shafts/rotary-shafts-5/diameter~3-8/length~6/material~stainless-steel/ part no 1263K78 bearing: https://www.mcmaster.com/bearings/oil-embedded-sleeve-bearings-7/for-shaft-diameter~3-8/length~1-2-1/
Vertical bearing will be a pair of apposing Nb magnets.
First thought at speed control was no control, just rely on size of the motor pulley and platter diameter. I doubt I can be that precise since I don't have a lathe. Plan B is as suggested above, an Arduino controlling a sine wave generator going to a cheap audio amp and then to the motor. I have a little Arduino programming experience and there are some sine wave generator shields that should make this work. It might not take too much to add a tach and feedback control to always provide the precise speed control. Plan C that I saw somewhere is to record the sine wave in a wave file on a MP3 player and amplify that.
I like the idea of a mylar belt, stripping it from an old VCR tape. I don't have a way to glue the ends together yet.
For the platter, I plan to be different and use a disk of hardwood. My big issue as I said, I don't have access to a lathe. I do have a friend has a computer controlled milling machine but that is probably not accurate enough. I am going to try to rig up some lathe and sand it down as accurate as I can.
I have not decided on a plinth design yet. Maybe two layers of wood with a thin layer of RTV as a constrained layer damping in between. Another idea I saw somewhere is rubber racket balls cut in half for the feet.
I have a 12 in DIY uni-pivot tonearm. To get the noise down, I had to use shielded cables. Their stiffness does screw with the anti-skating.
Vertical bearing will be a pair of apposing Nb magnets.
First thought at speed control was no control, just rely on size of the motor pulley and platter diameter. I doubt I can be that precise since I don't have a lathe. Plan B is as suggested above, an Arduino controlling a sine wave generator going to a cheap audio amp and then to the motor. I have a little Arduino programming experience and there are some sine wave generator shields that should make this work. It might not take too much to add a tach and feedback control to always provide the precise speed control. Plan C that I saw somewhere is to record the sine wave in a wave file on a MP3 player and amplify that.
I like the idea of a mylar belt, stripping it from an old VCR tape. I don't have a way to glue the ends together yet.
For the platter, I plan to be different and use a disk of hardwood. My big issue as I said, I don't have access to a lathe. I do have a friend has a computer controlled milling machine but that is probably not accurate enough. I am going to try to rig up some lathe and sand it down as accurate as I can.
I have not decided on a plinth design yet. Maybe two layers of wood with a thin layer of RTV as a constrained layer damping in between. Another idea I saw somewhere is rubber racket balls cut in half for the feet.
I have a 12 in DIY uni-pivot tonearm. To get the noise down, I had to use shielded cables. Their stiffness does screw with the anti-skating.
I purchased several such pairs of shaft and bearing from McMaster-Carr and found that there was too much play. I eventually gave up and bought a Tango Spinner bearing and sub-platter. Let us know if you find something that works.
Hi, brad1138 & others
Depending what tools, skills, and money you have, it is possible to make an excellent turntable. Centennial carbide can make a solid carbide shaft ( what I used ) of almost any diameter and length. They can also highly polish this shaft and grind a radius on one end, for an additional charge. You can also buy a length of linear bearing shaft material and go from there, again depends on tools and skill.
https://centennialcarbide.com/main-...Cj0KCQiA64GRBhCZARIsAHOLriJZU1qC6dRskWPZNFDGQ
You can buy bronze bushings to fit your shaft if you use a common diameter shaft eg. 5/16, 3/8" or metric sizes, etc. I machined a VESPEL ( special Dupont polyimide) bushing but is VERY expensive and requires using a good lathe. Here are two videos of what I did--By Steve Guttenberg. Hope this helps.
Good luck.
Joe
Depending what tools, skills, and money you have, it is possible to make an excellent turntable. Centennial carbide can make a solid carbide shaft ( what I used ) of almost any diameter and length. They can also highly polish this shaft and grind a radius on one end, for an additional charge. You can also buy a length of linear bearing shaft material and go from there, again depends on tools and skill.
https://centennialcarbide.com/main-...Cj0KCQiA64GRBhCZARIsAHOLriJZU1qC6dRskWPZNFDGQ
You can buy bronze bushings to fit your shaft if you use a common diameter shaft eg. 5/16, 3/8" or metric sizes, etc. I machined a VESPEL ( special Dupont polyimide) bushing but is VERY expensive and requires using a good lathe. Here are two videos of what I did--By Steve Guttenberg. Hope this helps.
Good luck.
Joe
Has anyone attempted to copy the Well Tempered method? From what I've read it would require the lowest degree of precision in making it but may at the same time outperform?
My guess is the noise picked up by the unscreened tonearm wires, AKA induction loop, between the tonearm and the output connectors picking up the electromagnetic radiation field all around.
Hi, just spotted this unit on E/bay, DC Motor in pod & controller. Not bad for $200 + shipping. The motor also is of interest as as far as I am aware it has not been mentions for use with T/T's before. The motor by itself is available from RS components for around $60.
https://www.ebay.com/itm/144335786805?hash=item219b155335:g:EccAAOSw~z5h1Q1r
Cheers
https://www.ebay.com/itm/144335786805?hash=item219b155335:g:EccAAOSw~z5h1Q1r
Cheers
HI,
About 15 years ago I made a DIY TT and the goal was to improve the sound of the TD 160 tweaked I had.
I bought an Acrylic platter 4.5 Kg, Bearing was made by a friend under my spec. with very tight allowance, pivot 13mm, oil lubrication. I have to say that is pretty good so far.
The plinth I built myself.
The platter support is a mag lev type and for it I used most recycled parts.
For the motor I used a Floppy disk 5 Inch type motor with a normal 550W PC supply, fixed pulley with 3 belts at the present.
For the TA at the present I am using a DIY 12 inch of the Supatrac, high mass for Denon DL 103.
Result is nice, sound wise also I am happy, but is not very cheap as many parts were made by a lathe guy as I do not have skill and tools for it.
In my opinion may worth to build your own TT if your goal is to a good TT aimed to a top sound results.
Big saving compared to an equivalent commercial TT may come from:
Motor as I took the idea from Origami project, but I used a stronger disk drive motor with higher torque. However the massive steel motor case had a lathe cost.
TA if you make by yourself. I made few, an Unipivot type, a clone of the Ref. 1 Schroeder and recently the Supatrac.
Plinth if you make by yourself. In case u make a non floating plinth is even cheaper than the floating one.
Bearing even if you ask to be made by a lathe guy.
Rgds
Adelmo
About 15 years ago I made a DIY TT and the goal was to improve the sound of the TD 160 tweaked I had.
I bought an Acrylic platter 4.5 Kg, Bearing was made by a friend under my spec. with very tight allowance, pivot 13mm, oil lubrication. I have to say that is pretty good so far.
The plinth I built myself.
The platter support is a mag lev type and for it I used most recycled parts.
For the motor I used a Floppy disk 5 Inch type motor with a normal 550W PC supply, fixed pulley with 3 belts at the present.
For the TA at the present I am using a DIY 12 inch of the Supatrac, high mass for Denon DL 103.
Result is nice, sound wise also I am happy, but is not very cheap as many parts were made by a lathe guy as I do not have skill and tools for it.
In my opinion may worth to build your own TT if your goal is to a good TT aimed to a top sound results.
Big saving compared to an equivalent commercial TT may come from:
Motor as I took the idea from Origami project, but I used a stronger disk drive motor with higher torque. However the massive steel motor case had a lathe cost.
TA if you make by yourself. I made few, an Unipivot type, a clone of the Ref. 1 Schroeder and recently the Supatrac.
Plinth if you make by yourself. In case u make a non floating plinth is even cheaper than the floating one.
Bearing even if you ask to be made by a lathe guy.
Rgds
Adelmo
DIY Isolation feet for Turntables and Speakers, https://www.mnpctech.com/collections/turntable-lsolation-feet