Which platter do I have?

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watchnerd
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Which platter do I have?

Post by watchnerd » 27 Feb 2018 06:27

About a year ago, bought a motorless Gyro SE. The frame (the metal part) has holes for mounting to sets of arms, so I guess it's a version M2.

Which makes me wonder if the platter is the old vintage or has it been upgrade?

How can I tell the difference between the alu and vinyl platters?

GyroSE
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Re: Which platter do I have?

Post by GyroSE » 27 Feb 2018 09:56

watchnerd wrote:About a year ago, bought a motorless Gyro SE. The frame (the metal part) has holes for mounting to sets of arms, so I guess it's a version M2.

Which makes me wonder if the platter is the old vintage or has it been upgrade?

How can I tell the difference between the alu and vinyl platters?
I'm not an expert in this but I believe the older platter has a metal rim. The recent vinyl/delrin/acrylic platter is black all over and doesn't have that metal rim. Please correct me if I'm wrong about this.

watchnerd
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Re: Which platter do I have?

Post by watchnerd » 27 Feb 2018 15:45

GyroSE wrote:
watchnerd wrote:About a year ago, bought a motorless Gyro SE. The frame (the metal part) has holes for mounting to sets of arms, so I guess it's a version M2.

Which makes me wonder if the platter is the old vintage or has it been upgrade?

How can I tell the difference between the alu and vinyl platters?
I'm not an expert in this but I believe the older platter has a metal rim. The recent vinyl/delrin/acrylic platter is black all over and doesn't have that metal rim. Please correct me if I'm wrong about this.
Do you mean an outer metal rim or an inner rim around the spindle hole?

I found this picture on the net (not my table) of a version with metal in the middle:

download/file.php?id=22805&t=1

GyroSE
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Re: Which platter do I have?

Post by GyroSE » 27 Feb 2018 20:22

watchnerd wrote:
Do you mean an outer metal rim or an inner rim around the spindle hole?

I found this picture on the net (not my table) of a version with metal in the middle:

download/file.php?id=22805&t=1
The metal part around the spindle hole is the nut that locks the platter. I believe the platter we see in the picture is the current model. In this case I mean the outer metal rim. Here's a link:

http://www.smetonearms.com/index.php?ma ... &chapter=1

blakep
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Re: Which platter do I have?

Post by blakep » 27 Feb 2018 22:00

The older aluminum platter was just that: aluminum. Looks like aluminum as in the photos in the above link. It also used a fairly substantial rubber mat, embossed as the "Michell Gyro Mat". On in some of the pictures in the link and not in others.

If you have an all black platter with no mat, you have the newer composite platter.

watchnerd
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Re: Which platter do I have?

Post by watchnerd » 28 Feb 2018 04:53

GyroSE wrote:
watchnerd wrote:
Do you mean an outer metal rim or an inner rim around the spindle hole?

I found this picture on the net (not my table) of a version with metal in the middle:

download/file.php?id=22805&t=1
The metal part around the spindle hole is the nut that locks the platter. I believe the platter we see in the picture is the current model. In this case I mean the outer metal rim. Here's a link:

http://www.smetonearms.com/index.php?ma ... &chapter=1
Oh, wow, no, my platter looks nothing like that. It's not shiny at all.

Thanks so much for the pic, it's really helpful.

Interestingly, my chassis looks exactly like that (drill-outs for a 2nd arm board), so the previous owner must have upgraded the platter at some point.

Also, my clamp is much much more vintage than that one...all silver, cursive engraving.

watchnerd
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Re: Which platter do I have?

Post by watchnerd » 28 Feb 2018 04:54

blakep wrote:The older aluminum platter was just that: aluminum. Looks like aluminum as in the photos in the above link. It also used a fairly substantial rubber mat, embossed as the "Michell Gyro Mat". On in some of the pictures in the link and not in others.

If you have an all black platter with no mat, you have the newer composite platter.
Thank you. It is, indeed, all black.

Didn't know if it was anondized or something....the composite platter feels nothing at all like I've read it described (a vinyl-like composite), is much harder and heavier than I expected.

Werner
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Re: Which platter do I have?

Post by Werner » 28 Feb 2018 06:15

There are three GyroDec platter types:

1) aluminium with rubber mat

2) black acrylic, concave top, clamp is mandatory

3) black acrylic, flat top, clamp is optional

watchnerd
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Re: Which platter do I have?

Post by watchnerd » 12 Mar 2018 15:26

Werner wrote:There are three GyroDec platter types:

1) aluminium with rubber mat

2) black acrylic, concave top, clamp is mandatory

3) black acrylic, flat top, clamp is optional
My platter has an indent for the record label, but that seems to be the same as every other platter picture I've seen.

Is the concave platter visually identifiable, or do you have to put an LP on the platter to know?

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Re: Which platter do I have?

Post by joem60 » 12 Mar 2018 17:07

Place anything with a straight edge across the platter this will show weather or not your platter is flat or concave.

watchnerd
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Re: Which platter do I have?

Post by watchnerd » 12 Mar 2018 23:43

joem60 wrote:Place anything with a straight edge across the platter this will show weather or not your platter is flat or concave.
I put the tonearm protractor on it and it's flat.

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