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Advanced Stylus Shapes: Pics, discussion, patents.

the thin end of the wedge

Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby sliceofhogan » 06 Dec 2017 16:47

Yes, I was confused by marketing babble probably, but here it states clearly a rectangular shank, opposed to the old square shank. But then a square is also rectangular :mrgreen: From the 2017 brochure
Image[/url]
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby chiz » 06 Dec 2017 19:05

True!
So the difference is the shank, not the tip.
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby waltertobin » 05 Apr 2018 09:16

jdjohn wrote:Fun with the USB microscope: an NOS nudie elliptical ATS13.

Front
ATS13 front.jpg


Side
ATS13 side.jpg


IMAG0187.jpg

IMAG0188.jpg

Hi, what is a model number of your microscope? I've tried several of them, and still not satisfied with results.
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby jdjohn » 05 Apr 2018 15:14

waltertobin wrote:
jdjohn wrote:Fun with the USB microscope: an NOS nudie elliptical ATS13.

Front
The attachment ATS13 front.jpg is no longer available


Side
The attachment ATS13 side.jpg is no longer available


The attachment IMAG0187.jpg is no longer available

The attachment IMAG0188.jpg is no longer available

Hi, what is a model number of your microscope? I've tried several of them, and still not satisfied with results.

Hi, it is a USB microscope made by Opti-Tekscope. They make several different models, but I don't see a model number on mine. Here is a pic:
81buMb0ebzL._SL1500_.jpg

I bought it from Amazon here: https://www.amazon.com/gp/product/B0184 ... UTF8&psc=1
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby JRob1125 » 09 May 2018 21:11

Does anyone know of ESCo's "Stereo Extended Contact" stylus? I had them retip my AT95E with one for a little more than half the price of their Paratrace. I asked about the shape of it and they say it's 6 x 17 um (about .24 x .67 mil) but claim that it's not an elliptical. I'm confused.

Anyway, to my ears it sounds better than Paratrace.
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby ray_parkhurst » 09 May 2018 22:19

Could be a pseudo-line / micro ridge like the NEO-SAS. If you want you can ship to me and I'll image the contacts and stylus tip for you...
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby jdjohn » 10 May 2018 01:53

Darn, Ray. Your cool pics in this thread now just have phonobucket links :(
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby ray_parkhurst » 10 May 2018 02:00

jdjohn wrote:Darn, Ray. Your cool pics in this thread now just have phonobucket links :(


Yeah, you have to click on them to see them unfortunately. Sign of the times. I have not tried uploading directly so don't know the file size limitations, etc. Next time I share I will do both...
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby jdjohn » 10 May 2018 02:20

ray_parkhurst wrote:Yeah, you have to click on them to see them unfortunately. Sign of the times. I have not tried uploading directly so don't know the file size limitations, etc. Next time I share I will do both...

I *think* it's only 1MB. My USB microscope pics don't have to be resized (only reformatted), but camera-phone pics do have to be reduced in size/pixels. I just use MS Office Picture Manager to open and then resize images so they basically fit my monitor screen...or a size I would like to see as a viewer/user. You can always upload and preview your posts here in the forum to get an idea of limitations.
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby Raider » 17 May 2018 16:57

I have two identical cartridges. The first has 100 hours of playing, the second I bought it as NOS. Currently this needle played about 1 hour. Their needles differ as you can see in the picture. Is not that strange?
Attachments
S20180219_007.jpg
S20180219_004.jpg
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby Raider » 21 May 2018 14:25

OK, I've got the answer that it's normal.
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby JRob1125 » 06 Jun 2018 18:23

ray_parkhurst wrote:Could be a pseudo-line / micro ridge like the NEO-SAS. If you want you can ship to me and I'll image the contacts and stylus tip for you...


I emailed ESCo about the Paratrace deminsions. They say it's "17 x 25 x 6 um" with 6 being the side radius. It's designed to play both stereo and mono records with effective a .2 side radius. I've never seen 3 dimensions use to describe a stylus shape....but this leads me to believe the "stereo extended" stylus is the same shape but narrower....maybe more like "true elliptical" or mini line contact while the paratrace is a ridge type of hyperelliptical? I'm not sure, I'm pretty new to studying stylus shapes and am totally confused now. I read that the Paratrace was 4 x 70 um
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby lini » 06 Jun 2018 22:05

JR: Philips also used to specify three radii for their SST needles (7 x 18 x 25 µm for the GP422II, 7 x 18 x 35 µm for the GP420III and 6 x 18 x 35 µm for the GP922Z) as did Acutex for the models with STR needle (0.3 x 1.6 x 0.5 mil for the Vital STR and 0.3 x 1.6 x 0.6 mil for the STR and Perfect STR).

Greetings from Munich!

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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby ray_parkhurst » 06 Jun 2018 22:37

I suspect the two larger radii are the familiar ones associated with the "overall" tip dimensions. The third (small) radius may be the rounding of the surface of contact ridge. It would be bad to have the contact ridge be sharp-edged, so maybe it's rounded to ensure it does not cut vinyl when new.
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Re: Advanced Stylus Shapes: Pics, discussion, patents.

Postby billshurv » 06 Jun 2018 23:07

Thank you for getting those measurements. I can now put to rest if this is indeed based on the Weinz Trigon or not. As for why different numbers were quoted in the past, I think it's just easier for people to copy down what someone else said than pick up the phone!
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