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<DIV><STRONG>New replies in <FONT color=#008000>GREEN</FONT>
below.....</STRONG></DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=georgenann@aol.com
href="mailto:georgenann@aol.com">georgenann@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [QuadList] Cap Disc</DIV>
<DIV><FONT face=arial color=black size=2><FONT size=3></FONT> </DIV>
<DIV
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: helvetica,arial">-----Original
Message-----<BR>From: Don Norwood <<A
href="mailto:dwnorwood@embarqmail.com">dwnorwood@embarqmail.com</A>><BR><BR>
<DIV id=AOLMsgPart_3_f228e533-09a4-4a51-be7a-72dd7efef698>
<DIV>
<DIV><FONT face=Arial><STRONG></STRONG></FONT></DIV></DIV>
<DIV>My post about changing the speed of the capstan was referring to your
description of what was done to the pulleys on VR-2000 or 1200 machines.
Unless I'm missing something, that would change the tape speed, which in turn
changes the video track specifications.</DIV>
<DIV><FONT face="Arial, Helvetica, sans-serif"></FONT> </DIV>
<DIV><FONT face=Arial><STRONG>Well, it might change the tape speed if it
weren't for the servo, it just put it into a slightly different range, one the
servo seemed to like a little better.</STRONG></FONT></DIV>
<DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=Arial color=#008000>Agreed, but ONLY for playback
where the capstan speed is controlled by the servo. If the machine is
for playback only, no problem, although I would have guessed that an
electronic modification would have been much easier. My
concern would be in record, where the capstan is fed a
fixed frequency, and therefore the speed is affected by the mechanics.
The servo has no way of knowing what the actual velocity of the tape is in
record. If it has been changed by a mechanical modification, then the
track alignment will be non-standard.</FONT></STRONG></DIV>
<DIV><FONT face="Arial, Helvetica, sans-serif"></FONT> </DIV>
<DIV><STRONG><FONT face=Arial>I remember those damn round chips in bd 9,
10. I whish they had left them alone, they made it hard to get a scope
in there to troubleshoot. Board 14 was reframing?? I don't recall having any
problem with it so left it alone.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=Arial color=#008000>Yes, 14 is mostly reframing.
After many years, the relays on the board can be problematic and cause trouble
with normal servo operation.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV>
<DIV><STRONG><FONT face=Arial>You sure have a great memory, you should write a
book on the history of the servo, kind of like the big Rolex or Vibroplex
history books. (Just kidding). Tnx fer the info it is interesting.
I didn't get into the machines till the 70's.</FONT></STRONG></DIV>
<DIV><FONT face=Arial size=3></FONT> </DIV>
<DIV><FONT face=Arial color=#008000><STRONG>I got into the machines in the
early 70's, and it's not my memory that's great, it's just that I have
collected as much reference material as possible. Since I still work on
these, some things are more easily recalled than others, but I still have to
look up a lot of stuff!</STRONG></FONT></DIV>
<DIV><FONT face=Arial color=#008000><STRONG></STRONG></FONT> </DIV>
<DIV><FONT face=Arial
color=#008000><STRONG>Don</STRONG></FONT></DIV></DIV></DIV></FONT></BLOCKQUOTE></BODY></HTML>