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Re: [lx90] Re: Lx90 azimuth stuck

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  • Henrik van Holthoon
    Great Ashok, I am glad you could solve the problem without dismounting the base completely. And yes excessive heat and humidity are not enjoyed by the scope.
    Message 1 of 13 , Jun 1, 2009
      Great Ashok,

      I am glad you could solve the problem without dismounting the base completely.

      And yes excessive heat and humidity are not enjoyed by the scope.

      regards Henrik




      ----- Original Message -----
      From: Ashok Srinivasan
      To: lx90@yahoogroups.com
      Sent: Monday, June 01, 2009 12:33 AM
      Subject: [lx90] Re: Lx90 azimuth stuck





      I found and fixed the problem. I had the lx90 in my patio
      for a while in a storm case and there were a couple of hot
      days. The plastic housing near the lower bearing had melted
      slightly :(:(:( I had to clean out the extruded parts with a
      small craft knife and use some extra force to move the
      azimuth past the point where it was stuck. Works now
      and I'm a sadder but wiser man..It stays in my garage
      except on hot days when it will make its way into my house
      over my wife's objections :)

      -Ashok
      --- In lx90@yahoogroups.com, "Henrik van Holthoon" <henrik.van.holthoon@...> wrote:
      >
      >
      > Hi Ashok,
      >
      > You have a nasty problem although this will happen seldom it is possible that one of the balls in the ball bearing is broken or damaged.
      >
      > I wish you can solve it soon.
      >
      > I have now a LX200ACF fortunately there the RA drive is fully accessible however not with the LX90 without taking the lower base from the top half.
      >
      > If you you do disassembling yourself do not use excessive force.
      >
      > Good luck
      >
      > Henrik
      >
      >
      >
      > ----- Original Message -----
      > From: Ashok Srinivasan
      > To: lx90@yahoogroups.com
      > Sent: Saturday, May 30, 2009 9:06 AM
      > Subject: [lx90] Re: Lx90 azimuth stuck
      >
      >
      >
      >
      >
      > Henrik, Thanks, That is good advice. I'm pretty good with
      > mechanical things but I dont have the right tool to take off
      > the flange and even if I did I'm not sure the 2 halves will
      > come apart based on what you said. I am hesitant to send the
      > scope to Meade based on what I've heard on these forums about
      > Meade's service.
      >
      > I'm just puzzled about what would make the bearing move
      > a short angular distance. I thought I'd see something obvious
      > if I disassembled it to this point like a piece of something
      > stuck in the bearing but I dont.
      >
      > -Ashok
      >
      > --- In lx90@yahoogroups.com, "Henrik van Holthoon" <henrik.van.holthoon@> wrote:
      > >
      > >
      > > HI Ashok,
      > >
      > > I do not own a LX90 anymore but when I still had this scope I tried to take the base apart in order to check on the RA drive system. I my case the bottom half of the base was really stuck into the top base half. (RA axis into bearings of top half)
      > >
      > > I think during mounting this scope Meade lowered the temperature of the RA axis in order to be mounted into the the RA bearings which is apparently narrow fit or heating the bearings to get the same effect.
      > >
      > > I did not do this the risk was to big in ruining the scope and if you are not really good at mechanical repairs you should not do this and it is then a job for Meade or somebody else who can do this.
      > >
      > > Regards Henrik
      > >
      > >
      > >
      > > ----- Original Message -----
      > > From: Ashok Srinivasan
      > > To: lx90@yahoogroups.com
      > > Sent: Monday, May 25, 2009 9:01 AM
      > > Subject: [lx90] Re: Lx90 azimuth stuck
      > >
      > >
      > >
      > >
      > >
      > > I have disassembled most of the base including taking off the whole
      > > lock knob and the screw it goes on. It still won't move much in
      > > the RA axis. Next step would be to disassemble the two halves of
      > > the base if only I knew how to do so without scratching the flange
      > >
      > > -Ashok
      > > --- In lx90@yahoogroups.com, "P. Clay Sherrod" <drclay@> wrote:
      > > >
      > > > This is a common problem associated with the locking knob, not the bearing. There is a
      > > > fix for this posted I believe on both Jan's site as well as the Files section of this
      > > > group. It does not require a complete disassembly of the base.
      > > >
      > > > Dr. Clay
      > > > _____
      > > > Arkansas Sky Observatories
      > > > MPC H45 - Petit Jean Mountain South
      > > > MPC H41 - Petit Jean Mountain
      > > > MPC H43 - Conway West
      > > > http://www.arksky.org/
      > > >
      > >
      >
      >
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >





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