Hello, I just received a new schopper/swissonor non-magnetic platter and it looks like there's a serious eccentricity problem,I'm not sure it can be fixed. Here's a video I've made: https://vimeo.com/79588439 it shows how the strobe markings slow down at every rotation (they slightly move in the opposite direction too)..btw the platter is spinning too fast because the video was taken with the turntable motor still cold, after ten minutes it slows down and then the strobe markings start bobbling wildly from left to right, the eccentricity problem remanins the same. The original platter is not perfect but it's a lot more stable than this one. Any ideas?
It's been like that since it came back from schopper two years ago. it's too fast when it's cold and then it slows down in about ten minutes
thanks moonshiner, I was just curious. When I see speed instability like that, I think motor problems. Any idea what type it is? is the new platter heavier than the old?
the platter is heavier and the dots are not printed on it like on the original platter, on the new platter they have used a sticker and it's eccentric to the platter itself, I don't have a strobe disc so I can't tell if this explains the whole problem.
Given what those platters cost I would complain to Schopper about it immediately and see whether or not they will either replace the platter or at least send you another strobe overlay which you can probably install successfully. (Edit: See my next post)
I have a TD-124/II with the cast iron platter and a number of additional accessories that add at least another kg to the overall mass. Mine runs just very slightly slow when cold and comes up to nominal speed in a few minutes in warm weather - takes a little longer when it is very cold in the man cave. I rebuilt the motor myself a couple of years ago. I also have a TD-124/I which runs fast when cold and settles down once warm - I have not yet rebuilt the motor and associate this with worn motor bearings - this unit was pieced back together with bits acquired over time on eBay.
I'm wondering what lubricant Schopper used in their rebuild and whether they replaced or reused the motor bearings. I use a 20wt electric motor oil which is supposed to mimic the original oil fairly well which it seems to do.
You can download a strobe and print it out on www.vinylengine.com but you must be a member to access the library, database and other features.
I have a TD-124/II with the cast iron platter and a number of additional accessories that add at least another kg to the overall mass. Mine runs just very slightly slow when cold and comes up to nominal speed in a few minutes in warm weather - takes a little longer when it is very cold in the man cave. I rebuilt the motor myself a couple of years ago. I also have a TD-124/I which runs fast when cold and settles down once warm - I have not yet rebuilt the motor and associate this with worn motor bearings - this unit was pieced back together with bits acquired over time on eBay.
I'm wondering what lubricant Schopper used in their rebuild and whether they replaced or reused the motor bearings. I use a 20wt electric motor oil which is supposed to mimic the original oil fairly well which it seems to do.
You can download a strobe and print it out on www.vinylengine.com but you must be a member to access the library, database and other features.
I finally watched your video and I wonder if the platter is centered properly on the spindle. I know that at least one vendor claims this is not necessary on their replacement platter, but I would try this first. The strobe does not appear defective to me. I have two of these tables and it is an effort to get them to run true, it is one of the reasons why it is often suggested to not remove the spindle from the platter. A cheap dial gauge is the most effective way to assure the platter runs true. Once done it is not an issue until the next time you remove the platter from the spindle. 🙂
You might find this thread interesting: http://www.diyaudio.com/forums/analogue-source/174341-restoring-improving-thorens-td-124-mkii.html
You might find this thread interesting: http://www.diyaudio.com/forums/analogue-source/174341-restoring-improving-thorens-td-124-mkii.html
I wanted better strobes than most of the pdf files so I added direct calculated strobe printouts to my alignment template generator. There are various options and you can change the size by changing both X and Y scaling factors. Any non-centering will cause a strobe to appear to speed up and slow down- annoys the heck outta me.
Third item down, here.
Third item down, here.
I wish it was, but it comes directly from them, the tt has been restored by schopper and the bearing comes from them too.
I'm sick of this table, I hope to sell it and get a garrard soon.
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