[Phono-L] Diamond disk rebuild

John Sheets johnws at jps.net
Thu Jul 6 13:51:39 PDT 2006


Thanks much for the specific advice.  I will try this!
JS

-----Original Message-----
>From: Ron L'Herault <lherault at bu.edu>
>Sent: Jul 5, 2006 10:11 PM
>To: 'Antique Phonograph List' <phono-l at oldcrank.org>
>Subject: Re: [Phono-L] Diamond disk rebuild
>
>John, the friction  spring that slides under the motor board should have a
>tiny bit of tension on it when the lift lever is up in the playing position,
>and more tension when the lever is down.  To get the right playing height,
>loosen the two square head screws at the top and move the outer tube up or
>down so that the flat feed gear does not touch the feed screw mechanism when
>the handle is down.  The feed screw should engage the flat feed "gear" by
>the time the handle is at the half way point of travel.  The threaded part
>at the bottom is the adjustment for playing height.  If you can't adjust it,
>your diaphragm may be warped.  You can give the horn a bit of a downward
>bend to bring the reproducer closer to the record or you can put another
>layer of felt between record and turntable as a stop gap measure.
>
>Ron L
>
>-----Original Message-----
>From: phono-l-bounces at oldcrank.org [mailto:phono-l-bounces at oldcrank.org] On
>Behalf Of John Sheets
>Sent: Wednesday, July 05, 2006 2:47 PM
>To: phono-l at oldcrank.org
>Subject: [Phono-L] Diamond disk rebuild
>
>I wonder if list members with lots of DD experience could give me some
>information?  I am restoring a Chippendale Console Diamond Disk (case needed
>a new base, lots of delaminated veneer, etc.) and am perplexed by the post
>that the horn and reproducer turn on.  Specifically, I am not getting the
>proper distance between the bracket that holds the horn, the finger that
>slides along the bottom of the motorboard (and is adjustable up and down)
>and the stud that fits into the bottom socket that the whole thing turns on.
>I can adjust all of these, but don't get them to the point where the
>reproducer sits appropriately on the record surface. Judging from the
>(rather poor quality) photos in the manuals and in the Frow book, there is
>maybe 1" between the spring steel finger and the bracket, but I can't set
>this and still have the lifting lever work to move the reproducer up and
>down. (Is this understandable?) I can also screw the stud at the bottom in
>or out, to lengthen the whole po
> st.
>I have studied the directions in the DD manual but still can't get the
>distances correct I am afraid.  Any thoughts? Thanks in advance--
>John Sheets
>
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