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Hi all. Came across this DIY linear tracker on youtube has anybody made one?
https://www.youtube.com/watch?v=q4hKgkyPVt8
Be sure to check the page its linked to that describes it in detail. Very interesting read.
Personally not sure about the friction that would be caused between the "horizontal bar" and the "short vertical bar" but the rest seems entirely plausible........
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the golf ball in a fluid.
One thing I don't like about that linear tracking arm is I'm hearing a lot of LP surface noise coming through!
It does have a good appeal for someone to tweak that design.
Thats interesting most audio reviewers say the WLT arm and table combo is quite silent
link you posted. I haven't heard other than that video.
Yes but that could be just a bad record Cougar. No arm or table is going to fix that and if it did it wouldnt be faithfully reading whats in the groove. The inventor claims the arm is silent in an unmodulated groove.....not saying it is just asking and hoping someone here may have had experience with it lol
It's kind of odd he would use a noisy record for a YouTube demonstration. I always pick my nicest sounding direct-to-disc records when I demonstrate my system to visitors. Of course, if they are audio enthusiasts, I always ask them to bring a couple of their favorite records so they have a baseline for evaluating my system. I don't think any of my audio buddies have ever brought over a noisy record. They usually bring their best sounding records.
Oh, well. To each his own!
Best regards,
John Elison
Suppose that's a fair point.....myt try to contact him!
I would think cueing would be easy - the horizontal plane is fixed in place.
With my ET arm I use the counterweight "arm" for picking up at the end, at the beginning you can use the arm to place into the groove. I figure this would be the same.
Looks like it would be pretty easy to make one for yourself. I think the method of implementing the horizontal bearing looks a little dodgy. I can see it constantly going back and forth between being zero resistance and a whole lot more than zero.
The angle of the "bath" bearing is the most baffling aspect - the arm is effectively getting longer as you move across the record - is this compensated by allowing the arm to twist like a pivoted arm as it moves across the record. Why not just have the bath allow the arm to truly be linear?
Having to keep the bath at a precise level might get old though you would have an easy way to change VTA without those creaky mechanisms other arms are forced to use to effect this.
Does a tonearm need a firm footing to the plinth? I think so, but this one would certainly be a quick way to find out how important it actually is.
I bet setting the geometry with this setup is a real experience!
Letting the stylus adjust it's azimuth? I think that is not likely to happen. I think instead we have a constantly changing azimuth. Maybe that is better than a permanently fixed WRONG azimuth but I would bet there is image wander.
One has to admire the work that went into this and I bet there are aspects of this worth pursuing but I think much of it falls into the category of: it works.
The question remains of how well does it work.
I know if I had made it it would be the best sounding tone arm I had ever heard. See BARANEK's Law ... Whether anyone else would think it sounds good is another question.
And to think, there are guys on this board who think ANY LT arm is too radical....
___
The little old ladies wait in wild anticipation for the meetings of the Double-A-C-ASSN...
n/t
I also love the whole "clockwork orange" look that the whole system has. Very interesting concept.
The bar it rides along does seem like it would cause a lot of friction, but it seems to work in the video. Would be interesting to hear in person.
Looks to me like a kit could be made cheaply.
> Looks to me like a kit could be made cheaply.
I think you're right!
However, since we are talking about vinyl, the market will be small, too. Therefore, who would be willing to put together an inexpensive kit when the reward would be small. I think this is the reason that most equipment associated with vinyl is very expensive. With low sales volume, profit margin must be high in order to make it worth the effort.
Also, this seems like a rather messy and inconvenient way to play vinyl. I have the money for an expensive air-bearing linear tracking tonearm, but I think pivotal tonearms are still easier and more convenient to use. I don't believe the advantages of linear tracking tonearms are worth the hassle. Of course, that's just me. I know that a lot of people enjoy linear tracking tonearms and I say, "More power to them!"
Best regards,
John Elison
Maybe a more "user friendly" (for morons like me) set of building instructions? I'd pay two bucks for it.
And a video on how he made it... off to the races!
Yeah, well it's probably not worth the effort to write it up and take pictures for two dollars. ;-)
Furthermore, if that's all it's worth to you, then you must already have a pretty good understanding of the process involved. So, why don't you build one and write it up yourself? I'll give you two dollars for the detailed plans with pictures! ;-)
So maybe 2 bucks isn't enough... But I would pay 10 bucks for sure!
I might give it a go with the existing instructions. If I succeed, I'll post a how to for free. Howdyalikedat? :)
Good for you, please do! I've been working on a VFD motor controller for 3 phase high voltage motors, like the Papst motor found on old Rek-O-Kut TTs, among others. When I get it right (think I'm close), and test it, I plan on posting complete instructions for others who may want to pursue it. Since I'm doing a complete DIY TT project (less cartridge), I'm very interested in this tone arm, so please post. BTW, I'm doing a take on the 2 ball angle iron (actually aluminum) LT tone arm. I'd like to build both and compare.
twystd
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