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Francop23 16th February 2010 02:18 AM

Looking for TT help
 
I purchased a Luxman TT on ebay and it was damaged in shipping. The top of the plastic base and the dust cover are shattered. The tonearm and platter seem fine. The unit fires up and platter spins. Anyone have any ideas on whether or not this can be salvaged. I'm not a bad woodworker and am not afraid to take on the challenge. Is there anything I need to know? Can anyone out there help?

Nanook 16th February 2010 05:38 AM

well, which Luxman,
 
and how skilled are you? Do you have any pictures? They'd help.

Many here have "re-plinthed" turntables to very good effect.

Francop23 16th February 2010 11:38 AM

I build acoustic guitars for fun. I can find my way around a shop pretty well. Never combined mechanical and woodworking before. I am assuming there are tight tolerances and mathmatical calculations to be planned ahead of time. Any and all help is appreciated.

Francop23 16th February 2010 11:39 AM

Oh! It is a PD 210. It has a 12" tonearm and it is belt drive.

Nanook 16th February 2010 10:24 PM

as a luthier your skills are ...
 
...way over what most (and I mean something like approaching 100%), so you have the skills.

I would strongly suggest you take the thing apart carefully, and then check what you need for clearances for the plinth from the underside. That's the only real difficulty.

send a photo if you can. Also, as a luthier, you can appreciate wood. Use good wood, or Baltic Birch plywood. No MDF , etc.

stew

Francop23 16th February 2010 11:17 PM

I have pics and I have tried to add them without much success. I guess my biggest concern is the relationship of the pivot point to the spindle. Is there anything I need to know geometrically. I have never installed a tonearm so I am not sure of the nuances. I think I know what you mean regarding clearances. If I can get the pics to upload I will post them. Anything you think of that might be pertinent please pass it along.

Nanook 17th February 2010 03:14 AM

posting pics...
 
1 Attachment(s)
attah them, don't try to inser them. The Luxman tables were quite nice looking, and apparently ok sounding. You can do a lot worse than that.

I'd remake/rebuild the top plate as close to stock as possible.

If it is an automatic or semi-auto, use a little caution

Nanook 17th February 2010 04:14 PM

an understatement ....
 
Quote:

Originally Posted by Francop23 (Post 2086910)
I I'm not a bad woodworker and am not afraid to take on the challenge. Is there anything I need to know? Can anyone out there help?

not a bad woodworker does not equal luthier :)

I didn't realize sooner that the TT is all plastic...

The important stuff is getting the bearing into a stout, well built plinth. A 12" arm is a real benefit.

First make an accurate drawing of the top of the plinth (as in a top view). Measure from the centre of the spindle to the centre of the tonearm pivot bearing, the centre of the spindle bearing to the centre of the motor pulley, and the relative height of the motor belt pulley to the platter, and the relative position of the pulley to the platter spindle.

If it is a manual table, then mount the tonearm such that it is in exactly the same position as the stock location. You may find it helpful to cut the plastic plinth around the tonearm bearing or mount. I've done this in the past to salvage tonearms. That way you get something that may be easier to mount than just the tonearm, as many have a no other means to mount them (I learned this on a Dual CS5000, which has an absolutely terrible arm!). The geometry of the arm to spindle is very important, so before you do anything, I'll suggest you measure the distance from the centre of the spindle to the

If the table is an auto or semi auto type, it may have sensors below the plinth. Be carefull of the circuits and the power transformer. If no fuse is inline on the power input (AC), put one in, just as some protection on the table (again learned on th CS5000 :( ). Not really required but a good practice to get into.

Hopefully there is only a simple circuit board (if any)

Francop, I must say that if you can make a guitar , I am sure you can make a plinth.

If you like, I'll post a few photos as examples or if you can email them to me I'll post yours

I hope you didn't overpay for the turntable. Did the shipping company damage it, or was it misrepresented?

Nanook 17th February 2010 05:24 PM

here's pic...
 
1 Attachment(s)
..hope it clarifies things...

AC is motor pulley centre to spindle centre
CB is spindle centre to tonearm pivot center.

Francop23 17th February 2010 07:35 PM

Thanks. Still haven't been able to get the pics to attach. I will keep trying. I paid $100US. It was damaged in shipping. I should be able to recoup the cost. The seller told me that I could keep whatever I could salvage once UPS finished their investigation. The TT was in excellent shape. It is a shame. I was upset when I saw it but then I realized that a good solid wood plinth might be better than the original. I think the info you provided me will be invaluable. It is a semi-automatic. I haven't looked under the hood yet. Waiting to see if UPS wants to inspect ii so I am leaving it as found in the box.


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