Hi,
I went there and was avalanched in the mountain. I looked at the RA drive
concerns but none were adressing what I needed. At least not that I
noticed. If you know of any particular linj I would really appreciate it.
Thanks,
Adi

On Tue, 29 May 2001, Hap Griffin wrote:

> Go to www.mapug.org and read the mountain of information on this subject.
>
> Hap Griffin
>
> ----- Original Message -----
> Sent: Tuesday, May 29, 2001 8:33 PM
> Subject: Re: [M]: LX200 Goto problem and Worm gear spring
>
>
> > Bruce,
> > I took a peek under the hood as it were and I found exactly what I
> > expected to find..only with no way to fix it. The entire Motor and Worm
> > gear assembly is floating on it own anchored by a spring to help it ride
> > out the irregularities in the main drive gear. The problem is that while
> > the spring is supposed to allow motion up and down it also allows the
> > entire floating mechanism to move a little sideways thereby producing the
> > 2.5 minute shift. Unless I get a really strong spring and replace it,
> > which seems to be a daunting task, i cant see anyway out of this. Any
> > advice or do you suggest I go for the spring?
> > Thanks,
> > Adi
> >
> >
> > > In a message dated 5/29/01 4:42:32 PM Eastern Daylight Time,
> > >
> > > << The only problem
> > > I face, and I wrote to the list before with no reply, is that in RA
> when
> > > the lock is engaged, the scope can still go halfway between 0 and the
> > > first small division which I think is approx 2.5 minutes. I am curious
> as
> > > to if this kind of play is normal. >>
> > >
> > > Adi,
> > >
> > > I can't address the 'goto' problem because I have never used my scope in
> > > alt-az mode. However, the 'slop' in RA that you describe is definitely
> not
> > > good! If this is an older scope and not under warrantee, I suggest you
> > > remove the screws holding the bottom of the scope on .... an easy task..
> and
> > > take a peek inside at the RA drive motor assembly. While looking, move
> the
> > > scope physically in Azimuth, just as you do for creating your failure.
> > > Look, under those conditions, for why you have this excess movement.
> Chances
> > > are, it's either being caused by loose screws holding the drive
> gear/worm
> > > assembly in place, excess looseness in the worm mounting to the drive
> gear
> > > assembly, or in having insufficient tension on the spring that is
> pushing the
> > > worm into the worm gear.
> > >
> > > If it's loose screws, then simply tighten them with a hex head driver.
> If
> > > it's either of the other two conditions, you would want to remove the
> two
> > > screws just mentioned, and lift the gearbox out so that you can make the
> > > proper repairs. If it's none of the above, then you could most likely
> see
> > > what is causing the problem, whatever it might be. Then, you'd at least
> have
> > > a good idea when searching the archives or for checking back for other
> ideas.
> > >
> > > For what it's worth.
> > >
> > > Bruce Johnston
> > >
> > > Bruce Johnston Computing
> > > <http://members.aol.com/bjohns7764>
> > > Internet home for "SuperFix" and "MegaFix" image processing software.
> > > Personal page: <http://members.aol.com/ccdastro>
> > >
> >
> >
>
>

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