Linear Tracking

[jbeckva]

Have you had much experience with the Technic's ?
Seen many of them when I was in the service.
Used to refer to them as the 'Close and Play" tables .

I have a SL-Q5 here that works great. I had a cheesy JVC before that, but the Technics does great for me. Grado Black T4P cartridge installed.

 

[laatsch55]

I spoke for that arm over a year and a half ago....had a PL-L1000 on the hook but that didn't pan out. Don't know what Ed had going on, maybe it's a surprise. I know he had a table or two extra there....

 

[laatsch55]

Send one to Nav........he could....

 

[laatsch55]

Ed probably just forgot you had spoke for it Lee. He talks about so much cool stuff its hard to keep up with him.
Its always enjoyable. Ed also has one of the overhang gauges for the PL Lt.
Just a wild thought......wonder if it could be duplicated on one of those 3D printers? There kind of hard to find.

Ed had 3 arms left when I put dibs on that one....

 

[Northwinds]

You have the most entertaining past, Ron.

Nando.

I am old enough to have a past and that's about it, what happens along the way is life and the characters you meet are a crapshoot

 

[NavLinear]

Send one to Nav........he could....

I'm game.

 

[NavLinear]

Ed probably just forgot you had spoke for it Lee. He talks about so much cool stuff its hard to keep up with him.
Its always enjoyable. Ed also has one of the overhang gauges for the PL Lt.
Just a wild thought......wonder if it could be duplicated on one of those 3D printers? There kind of hard to find.

If you get your hands on one either take good measurements or send it my way and we could duplicate it or get very close. If you have a detailed drawing of one that would work too.

 

[MarkWComer]

Ed also has one of the overhang gauges for the PL Lt.
Just a wild thought......wonder if it could be duplicated on one of those 3D printers? There kind of hard to find.

The adjustment for linears is zero overhang:

Use any protractor (Stevenson, Baerwald, etc.) that has a straight line coming from the spindle post center.
Chock the platter so that it doesn't turn easily, drop the stylus on the protractor.
Rotate the platter (or protractor) until the line corresponds to the stylus position.
Slide the tonearm either fully right or left (depending on where you started) and see if the stylus point is still on the line.
When you've fiddled enough with it that the point rests on the line regardless of arm position, you've accurately reached zero overhang.

Note: basically you're ignoring the grids of the node points on the protractor, but the grid is still useful to find 90° tangent between groove and cantilever.

 

[MarkWComer]

My first was the Marantz SLT-12 back in 1969.

Now that was a complicated beast- not surprised that it didn't work well.

Revox also made an LTTT where the "tonearm" was a carriage above the platter that swung out of the way to replace the record. Another complicated machine.

 

[laatsch55]

You're like a walkin history book on TT's....uber cool...

 

[Elite-ist]

Mark, you've shared some good information with us. I'm glad I bumped this thread. I would love to have a Pioneer PL-L1000 down the road. They just don't pop up that often in my part of town, but eventually one will.

Nando.

 

[MarkWComer]

You're like a walkin history book on TT's....uber cool...

(If you were referring to me, not really. The phonograph bug bit me before kindergarten, it's been a lifelong hobby and passion.)

Photos collected from the web:

Marantz SLT-12u:​

The Marantz underbelly:​

Studer/Revox B790:
​

The thing I wonder most about these two that really don't have a "tonearm" is how much variance there is in the VTA since there's such a short vertical pivot to the "arm"

 

[laatsch55]

Your contributions are welcome Mark.....always need more info...

 

[MarkWComer]

Hmmm... Photo tags don't seem to be working today... Does anyone see any photos?

Test image:

<a href="http://s1102.photobucket.com/user/WheelieWayne/media/Harleys/DynaMark.jpg.html" target="_blank"><img src="http://i1102.photobucket.com/albums/g445/WheelieWayne/Harleys/DynaMark.jpg" border="0" alt=" photo DynaMark.jpg"/></a>

 

[Elite-ist]

Earlier they weren't there, but now all of them appear.

Nando.

 

[MarkWComer]

Earlier they weren't there, but now all of them appear.

Nando.

My brain is like those games where you have to get a little ball into a hole... my brain just fell out of the hole momentarily.

I was using html tags instead of IMG tags

 

[laatsch55]

LMOFAO!!!!

 

[MarkWComer]

I would love to have a Pioneer PL-L1000 down the road. They just don't pop up that often in my part of town, but eventually one will.

Nando.

Look for a PL-L800- it's not that far different from the 1000. There's also the PL-L1000A with a different arm travel control.

 

[Fishoz]

Just bumping this thread cause there's a lotta good shit here.....and a lotta Phoenix shit. Good reading.

 

[Mark Allen]

I had an Eminent Technology air bearing linear tracking arm on a VPI HW-19 for many years and it was great as far as vinyl went. I sold it about 15 years ago then scrapped all my LP's except my Direct to Discs which remain packed away. I went to CD and SACD exclusively. Today I run a DAC that has no analog output stage, there are only a pair of Lundahl line transfomers between the output of the DAC chip and the line stage. Even the best quality vinyl playback I've heard doesn't come close to what this DAC can do.

Mark