What Tonearm is This?

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duri666
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Re: What Tonearm is This?

Post by duri666 » 31 Oct 2018 14:53

Hello friends,
I bought the turntable REGA Planar 3 through Ebay with these typ of tonearm.I don't know what kind is it and how to setup it. What I found it seems like the Hadcock, but I didn't find exactly the same but with certain differences. Can you someone write me what type nad a brand is it and how I have to do set up. The counterweight is not symmetrical, button for tightening is from the metal and this is outbalanced all the weight.
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duri666
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Re: What Tonearm is This?

Post by duri666 » 31 Oct 2018 14:57

..another pictures
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nat
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Re: What Tonearm is This?

Post by nat » 02 Nov 2018 00:18

Again, Syntec. The base's similarity to Grace bases is interesting. And yours seem not to have the auxilliary weight on them in the pictures.

duri666
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Re: What Tonearm is This?

Post by duri666 » 02 Nov 2018 09:58

Hi Nat,
Thank you very much for your reply. But I can not find the same from Syntec ... it seems like a hybrid ... something from Roksan, something from VPI, something from Hadcock ... do you know which model can it be? Yes - I wondered that a balanced counterwieght is missing ... because a horizontal balance is very difficult set up ...by headshell, it can not be determined ?

nat
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Re: What Tonearm is This?

Post by nat » 02 Nov 2018 23:32

Weird - those aren't the pictures I saw when I responded yesterday. The arm shown today is clearly a unipivot (and the pivot doesn't seem to be in the well - it should be lifted up and placed so that the top and the base are nicely aligned), but it doesn't look exactly Hadcock to me. The combination of silver and black, the headshell and the curved cuing arm and flat parallel plate that the cuing mechanism is on do not look like Hadcock. I think you might have a very nicely made DIY arm made from parts from commercial arms - a hybrid as you say. The various parts don't seem to me to match, but the real issue for me is the cuing mechanism - there is a spacer at the top of the post under the platform, which would be a bizarre addition to a standard arm, and the platform itself which is white plastic - where did that come from? And look at the standard hardware store bolt that is part of the antiskating mechanism!
Having said that, I suspect that it might be a very good arm, though when you set the eccentric counterweight, you will get a very peculiar looking angle to the lock nut.

themisto462
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Re: What Tonearm is This?

Post by themisto462 » 04 Nov 2018 10:11

duri666 wrote:
31 Oct 2018 14:53
Hello friends,
I bought the turntable REGA Planar 3 through Ebay with these typ of tonearm.I don't know what kind is it and how to setup it. What I found it seems like the Hadcock, but I didn't find exactly the same but with certain differences. Can you someone write me what type nad a brand is it and how I have to do set up. The counterweight is not symmetrical, button for tightening is from the metal and this is outbalanced all the weight.
It seems, that you have the CEC TA-1 unipivot tonearm, which was standard at the CEC 9003 turntable.
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Some pictures from the CEC gallery:
214
217
215

I think, the first picture of the brochure gives a clue, how to use the counterweight and the anti skating mechanism.
I'm afraid, that you will need a stylus pressure gauge for the setup of the vertical tracking force.

Regards.

duri666
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Re: What Tonearm is This?

Post by duri666 » 04 Nov 2018 13:34

Hi friends,
thank you so much to both.
Themisto462 - this is exactly what it is. But what you mean under "you will need a stylus pressure gauge" please? Can you write for details, pls...?

nat
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Re: What Tonearm is This?

Post by nat » 04 Nov 2018 23:28

It looks like the cuing platform on yours is a replacement - the color and top surface are quite different, and the little spacer is not there. But otherwise, it looks exactly the same, even the hardware-store-looking bolt used to adjust antiskating.
You'll need to use a scale to set tracking force because there doesn't appear to be any markings or system to set it on the arm. That's not all that unusual in fancy arms, even if it is sort of counterintuitive.
I noticed another issue when looking at your pictures. That wad of wires poking out between the arm and the base should not be there. They, and the misalignment of the arm make me wonder if someone didn't pull the arm out of the pivot well, dragging the wires up out of the base, and than put the arm back down, missing the well and mashing the wires a bit. If you look at the advertisement picture you can see that the cylindrical arm pivot is nicely aligned with the base post, and there are no wires sticking out.
I hope the pivot wasn't damaged, and no wires or solder joints were broken in whatever happened to your arm.

themisto462
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Re: What Tonearm is This?

Post by themisto462 » 05 Nov 2018 10:47

duri666 wrote:
04 Nov 2018 13:34
But what you mean under "you will need a stylus pressure gauge" please? Can you write for details, pls...?
I meant such a device:
https://www.lpgear.com/Merchant2/graphi ... uge-md.jpg
"Stylus pressure gauge"

As nat wrote, your tonearm seems to have no markings how, high the tracking force will be. Therefore you would need such a device, to have a reference point, how high the tracking force actually is.

duri666
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Re: What Tonearm is This?

Post by duri666 » 06 Nov 2018 20:31

Welcome dear friends,
I thank to you again for your replies.
to themisto462: Oh so, you mean this one....well, I have this same, But I don't know to introduce how do I setup power of antiskating with this tool or by this tool...I thought that it can only setup a downforce of a tonearm. Therefore I was looking for informations about a type of this tonearm, because I don't recognise it at all. Then I wanted to find a manual instructions for this type of the tonearm with instructions for setting up... but nothing I have not found at the Internet - except Themisto462's infos of course. I don't know how it setup still...

To nat: that picture with "wad of wires" if you mean at the last picture - these photos are from "themisto462" - with displayed other turntable (CEC 9003) from someone unknown...pictures from my turntable are upper and there is not "wad of wired" if I right understand your infos. But I think that the wires there must be a little free - otherwise they could make a resistance to the tonearm when moving from beginning to end of LPs.
I don't see no differences between my tonearm and tonearm at photos from themisto462 - except a white plastic on the lifting mechanismus like you wrote.
I don't know whether you understand what I mean - but the support for a wire of antiskating (with the weight on the end) must be in a horizontal line with the screw with the rope of wire for antiskating....simply - it must pull the screw forward not up....because then it disrupts right azimuth of needle - or am I wrong?

Thanks friends, again.

nat
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Re: What Tonearm is This?

Post by nat » 08 Nov 2018 23:47

I think that that your arm has been pulled up and lifted out of the well that the pivot sits in. The central cylinder should line up with the cylinder of the arm bass, which it clearly does not seem to. When it was lifted, it pulled the wires up, when when dropped back down, it bent them out sideways. The wire in unipivots is always a problem (which is why the A and D arm, later sold as Keith Monks, used mercury wells to transmit the signal). The wires can tilt the arm, which is only balanced on the pivot, and they can bind, keeping the arm from moving smoothly and frictionlessly. I think you need to pull them back down into the base - not tight, since you are right that they need to have some slop to move easily, but so that they are pretty vertical in orientation and the arm motion sort of twists them when it moves, rather than having to bend them.

duri666
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Re: What Tonearm is This?

Post by duri666 » 09 Nov 2018 00:36

Hi Nat,
thanks for your response. OK, maybe, I will try fix it tomorrow, I will send a photos. In the central cylinder is an oil for damping, but I think not adequate enough. It will be seen at the photos. Do you know what viscosity of oil is needed there?

tatamata
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Re: What Tonearm is This?

Post by tatamata » 13 Nov 2018 00:17

Got this arm, but can t find anything about it. Perhaps someone on this forum know and can recognize this arm.
So Help please, here is picture. Need mounting distance and effective mass of this arm if possible.
Regards
http://img.photobucket.com/albums/v436/ ... 1541977202

themisto462
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Re: What Tonearm is This?

Post by themisto462 » 13 Nov 2018 09:41

tatamata wrote:
13 Nov 2018 00:17
Got this arm, but can t find anything about it. Perhaps someone on this forum know and can recognize this arm.
So Help please, here is picture. Need mounting distance and effective mass of this arm if possible.
Regards
It looks like the stock tonearm of the Kenwood KD-550 turntable. You can find more information about it at the library:
https://www.vinylengine.com/library/ken ... -550.shtml

Regards.

tatamata
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Re: What Tonearm is This?

Post by tatamata » 13 Nov 2018 15:05

Yes, that is definitively Kenwood KD-550 turntable arm. Thanks a lot.
Regards