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My new effort on making the ultimate DP-80
My new effort on making the ultimate DP-80
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Old 17th February 2014, 05:12 PM   #21
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
I had decided on the way that i was going to modify the original U part that supports the motor.
The whole thrust plate area was to be ommited and new one would be attached to the U part.
This time it was a teflon thrust plate and a ceramic ball twice the size of the original one.
Under the teflon a layer of medium hardness silicone was used to provide a level of
compliance to the system.
All this was to be placed inside a massive round block of bronze that would go through the original underside bowl and the bottom aluminium plate.
The bronze was to form a "bathtub" for oil up to the height of the ball- everything completely immersed in it.
On the first bronze part, another massive piece of bronze (ballast weight) was to be attached with an intermittent flange
of sorbothane to quiet things down even more.
All this would hang about 1 mm over the turntable's resting platform.
I had to make exact measurements for all these and so i had to test assemble the whole thing together.
It looked nice.
Attached Images
File Type: jpg spindle detail (FILEminimizer).jpg (15.7 KB, 412 views)
File Type: jpg 20131030_113853-Optimized.jpg (73.7 KB, 414 views)
File Type: jpg 20131030_113849-Optimized.jpg (91.4 KB, 415 views)
File Type: jpg Photo0436-Optimized.jpg (68.5 KB, 400 views)
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Last edited by soundofvoid; 17th February 2014 at 05:16 PM.
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Old 19th February 2014, 10:55 AM   #22
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
I knew it was a bold move because if something went wrong i would be left with an unusable turntable but stuck to my intentions and sent it out to the CNC and prayed for the results.
A week later i had the pieces in my hands and -thank God- everything went as planned.
The U part was cut carefully and out went the original thrust plate but enough
of the original was left to press the rubber seal securing from oil spill.
Two new bronze pieces were cut, one to substitute the missing part
and form the place for the silicone/teflon/oil tub and another to attach
on the previous one just to add mass to this critical part of the turntable.
Here are the pics:
Attached Images
File Type: jpg Photo0479-Optimized.jpg (74.5 KB, 372 views)
File Type: jpg Photo0480-Optimized.jpg (98.7 KB, 91 views)
File Type: jpg Photo0484-Optimized.jpg (60.3 KB, 102 views)
File Type: jpg Photo0485-Optimized.jpg (88.8 KB, 115 views)
File Type: jpg Photo0487-Optimized.jpg (70.4 KB, 115 views)
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Old 25th February 2014, 10:44 AM   #23
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
The all aluminium box arrived and looked pretty good.
It had 4mm thick panels all around anodised in black and a nice 8mm thick
front panel anodised in natural silver color.
The fascia was to be modified to my tastes as i wanted things engraved and the 4 screws hidden...
but it was okay for a starting point.
I had made the order on one that could take the whole Π shaped
board assembly as it was placed in the DP's underside plus enough room
for an 80 Watts down converter to 100 VAC, a new bigger transformer to power
up the motor and electronics plus a generous AC filter.
A massive umbilical cord would exit the bottom of the turntable and fit
to the back of the control/PS box with a twist/lock multipin (28 contacts) connector
with gold tipped contacts.
I had made my orders and things started to gather in...
Attached Images
File Type: jpg Photo0332-Optimized.jpg (78.8 KB, 153 views)
File Type: jpg Photo0331-Optimized.jpg (90.4 KB, 136 views)
File Type: jpg Photo0330-Optimized.jpg (74.0 KB, 100 views)
File Type: jpg Photo0337-Optimized.jpg (58.5 KB, 98 views)
File Type: jpg Photo0335-Optimized.jpg (71.9 KB, 100 views)
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Last edited by soundofvoid; 25th February 2014 at 10:48 AM.
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Old 28th February 2014, 06:04 PM   #24
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
Don't think that everything can be done by machines.
Since it's a mix of the old and the new, many times the process seeks the human labor to make everything fit.
For example parts need to be sanded down, and drill tap and die needs to be done to fortify specific areas that were not supposed to hold the mass that they do now...
There is a lot of my sweat in the details...
Attached Images
File Type: jpg 20140210_124305-Optimized.jpg (115.0 KB, 170 views)
File Type: jpg 20140210_124959-Optimized.jpg (183.4 KB, 179 views)
File Type: jpg 20140210_131251-Optimized.jpg (131.9 KB, 150 views)
File Type: jpg 20140131_123238-Optimized.jpg (131.2 KB, 146 views)
File Type: jpg Photo0443-Optimized.jpg (61.6 KB, 154 views)
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Old 4th March 2014, 06:47 PM   #25
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
I had a plan about using a periphery ring but the original platter was too shallow
for a competent design.
So i thought about an extra metal mat that would give me enough height to use a periphery ring.
I was aiming at around 2000 grams weight and i needed about 10 mm raise.
I designed it with a curved top edge so that the periphery ring would fit easily on it.
Here's what i got:
Attached Images
File Type: jpg Photo0452-Optimized.jpg (77.4 KB, 154 views)
File Type: jpg Photo0454-Optimized.jpg (68.3 KB, 136 views)
File Type: jpg Photo0455-Optimized.jpg (58.4 KB, 151 views)
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Last edited by soundofvoid; 4th March 2014 at 06:49 PM.
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Old 6th March 2014, 09:46 AM   #26
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
Now it was time for the periphery ring.
I designed one out of inox steel and i wanted to keep it under 1.5 kilos.
I had to take into account the extra metal mat as the ring would position itself
by "hugging" around it.
Plus i wanted it to look as an integral part of the turntable so it's external diameter would be up to the point of the dark grey area surrounding the buttons.
I tried to position most of it's weight under the LP level to aid spindle stability.
It came out pretty good and it's weight was right up to 1350 grams
This is what it looked like:
Attached Images
File Type: jpg blackened periphery.JPG (82.0 KB, 156 views)
File Type: jpg 2nd blackened periphery.JPG (69.4 KB, 130 views)
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Old 6th March 2014, 06:34 PM   #27
directdriver is offline directdriver  United States
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Your dedication to this project is amazing. I can't wait to see the final unit! Keep up the good work!

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Old 6th March 2014, 07:14 PM   #28
soundofvoid is offline soundofvoid  Greece
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Thank you directdriver!
To be honest i was expecting more interest and questions since i see from the stats many people viewing this thread.
I guess people just wait to see the final outcome and then they will reveal their thoughts...
Anyway...to be continued!
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Old 7th March 2014, 05:08 PM   #29
soundofvoid is offline soundofvoid  Greece
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Join Date: Apr 2007
Location: Glyfada/Athens
All looked nice and tidy with new metal mat and periphery ring.
However the increase in thickness of the whole platter eliminated the
protruding spindle for the center of the LP.
That meant that the center axle had to be elongated.
I wanted it a good 10mm longer to clear the record and help the positioning
of a record puck.
So, out came the rotor part of the motor and went for an "add on" job.
It was carefully cut at the point it starts to get conical,
a long hole (about 1.5cm) was cut into the remaining part and the new longer part was tightly inserted.
Now i had the height i wanted.
See it in comparison with the original:
Attached Images
File Type: jpg Photo0347-Optimized.jpg (120.7 KB, 141 views)
File Type: jpg Photo0349-Optimized.jpg (73.0 KB, 111 views)
File Type: jpg new spindle 1.JPG (50.4 KB, 113 views)
File Type: jpg new spindle 2.JPG (52.5 KB, 108 views)
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Old 7th March 2014, 05:56 PM   #30
audiostar is offline audiostar  United States
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soundofvoid,

Your thread or threads on vinylengine is gone???
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