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Subject: [M]: 12 inch focuser spring in 10 inch ?
From: Paul Luckas
Reply To: mapug@shore.net
Date: Tue Jun 26 18:00:01 2001
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Re: [M]: LX200: Ball bearing focuser upgrade.Actually - along similar =
lines - I'd like a detailed description of the spring arrangement in the =
12 inch LX200. May duplicating this for the 10 inch will solve a few =
problems ? Any 12 inch owner care to describe ?
----- Original Message -----=20
From: BREWSTER,JON A (HP-Corvallis,ex1)=20
Sent: Wednesday, June 27, 2001 2:57 AM
Subject: RE: [M]: LX200: Ball bearing focuser upgrade.
Do you mean the pivot ? If so, then yes, I thought about this, but =
was worried that shimming it up would reduce the amount of free movement =
it has to slide along the pin. I would imagine that it needs this to =
allow for the fact that everything is unlikely to be perfectly square as =
the mirror moves up and down the baffle.
Could the remaining bit of backlash result from space between the =
focusser screw device and the arm that actually
moves the mirror ? If so, that space could be eliminated, I would =
think.
=20
Hi folks,
I'm in the same boat. I've considered a spring device, but don't have =
a complete design. In short, could a nut+washer+spring+washer be placed =
on the end of the threaded part to push on the pin? You'd give up =
"front focus", but maybe thats OK?
Jon B =20
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<HTML><HEAD><TITLE>Re: [M]: LX200: Ball bearing focuser upgrade.</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4616.200" name=3DGENERATOR>
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Actually - along similar lines - I'd =
like a=20
detailed description of the spring arrangement in the 12 inch LX200. May =
duplicating this for the 10 inch will solve a few problems ? Any 12 inch =
owner=20
care to describe ?</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
(HP-Corvallis,ex1)</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, June 27, 2001 =
2:57=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [M]: LX200: Ball =
bearing=20
focuser upgrade.</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DTahoma size=3D2></FONT> </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=3DArial size=3D2>Do you mean the pivot ? If so, then =
yes, I=20
thought about this, but was worried that shimming it up would reduce =
the=20
amount of free movement it has to slide along the pin. I would =
imagine that=20
it needs this to allow for the fact that everything is unlikely to =
be=20
perfectly square as the mirror moves up and down the =
baffle.</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"><FONT=20
color=3D#0000ff></FONT>
<DIV style=3D"FONT: 10pt arial"><BR>Could the remaining bit of =
backlash=20
result from space between the focusser screw device and the arm =
that=20
actually<BR>moves the mirror ? If so, that space could be=20
eliminated, I would think.<BR><SPAN =
class=3D640180817-26062001><FONT=20
=
color=3D#0000ff> </FONT></SPAN></DIV></BLOCKQUOTE></BLOCKQUOTE>
<DIV dir=3Dltr style=3D"FONT: 10pt arial"><SPAN =
class=3D640180817-26062001><FONT=20
color=3D#0000ff>Hi folks,</FONT></SPAN></DIV>
<DIV dir=3Dltr style=3D"FONT: 10pt arial"><SPAN=20
class=3D640180817-26062001></SPAN> </DIV>
<DIV dir=3Dltr style=3D"FONT: 10pt arial"><SPAN =
class=3D640180817-26062001><FONT=20
color=3D#0000ff>I'm in the same boat. I've considered a spring =
device, but=20
don't have a complete design. In short, could a =
nut+</FONT></SPAN><SPAN=20
class=3D640180817-26062001><FONT color=3D#0000ff>washer+spring+washer =
be placed on=20
the end of the threaded part to push on the pin? You'd give up =
"front=20
focus", but maybe thats OK?</FONT></SPAN></DIV>
<DIV dir=3Dltr style=3D"FONT: 10pt arial"><SPAN=20
class=3D640180817-26062001></SPAN> </DIV>
<DIV dir=3Dltr style=3D"FONT: 10pt arial"><SPAN =
class=3D640180817-26062001><FONT=20
color=3D#0000ff>Jon =
B</FONT> </SPAN></DIV></BLOCKQUOTE></BODY></HTML>
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