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WolfgangG
member
Reged: 08/06/08
Posts: 13
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Dear Mister Mollis,
when i first read your answer, you where Mister Nobody
to me.Now as i did own some of your books the situation has changed. Certainly you don't want me to commit suicide because of the scopes error 
There had been an oportunity to get the error fixed
by meade germany, but i did not take it because
i had not time to do so.
The wanted to ship the scope to them and i insisted to transport it myself.
So i have to be patient. Nevertheless, a good GEM ( GCE or CG11 ) might be the best solution but cost a lot of money.
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rmollise
Post Laureate
Reged: 07/06/07
Posts: 4553
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Quote:
Dear Mister Mollis,
when i first read your answer, you where Mister Nobody
to me.Now as i did own some of your books the situation has changed. Certainly you don't want me to commit suicide because of the scopes error
Well, don't do that. I have never seen the telescope worthy of suicide. Well almost never. There was once a 10-inch LX6 that made its new owner want to jump over a cliff, but that is another story for another day. 
My advice? If you have a problem with a new scope, get it fixed pronto. You will be sorry later, when the scope is out of warranty, if you do not. 
--------------------
Uncle Rod
Rod's New Book:
Choosing and Using a New CAT
Available now!
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Bamccoy
member
Reged: 03/27/09
Posts: 43
Loc: Frederick, MD
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I’m new to the forum and wanted to share some info.
I received my new LX-90 8” a couple of weeks ago and the few nice nights have proved it a good buy. I almost didn’t buy the Meade when I stumbled on all the vibration issues.
I checked with several large dealers and they said Meade had corrected the issues but never disclosed the root cause to Dealers or customers. I liked the small Meade better than the CPC 800 but that’s just me. So far I’ve had no vibration issues and everything has been very smooth at every different elevation while tracking. Just thought I’d throw it out there for anyone on the fence like I was.
I also read posts talking about how hard the bigger scopes were to get centered. I’m not sure when but the new tripod has a spring that keeps the mounting bolt elevated making mounting / centering the scope a breeze. It springs into place if you don’t quite have it centered but at least you hear it going up into the bottom of the mount.
Bill
--------------------
Bill
LX90-ACF 8"
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Nick Cook
Pooh-Bah
Reged: 01/28/06
Posts: 1239
Loc: Somerset, England
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Welcome to CN Bill and good news on your experience. That's a nice scope you have there. 
Regards,
Nick
--------------------
Meade 14" RCX + Astro Physics 0.75 Reducer (27TVPH)
Meade 5000 ED80 APO (Guider/widefield)+ WO 0.8 Reducer
William Optics Zenithstar 66 Petzal
SBig STL11000M + AO-L + 3" Pyxis Rotator + 3" PDF Focuser
Canon 20Da + IDAS Filter
Pulsar 9ft Dome
www.nick-cook.net
www.cavebear.co.uk
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brianb11213
Carpal Tunnel
Reged: 02/25/09
Posts: 2075
Loc: 55.215N 6.554W
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Quote:
So far I’ve had no vibration issues and everything has been very smooth at every different elevation while tracking.
That's the experience I've had with my LX90 8" purchased Dec 2007 and worked fairly hard (about as hard as is possible with the amount of cloud cover we get here.)
Quote:
I also read posts talking about how hard the bigger scopes were to get centered. I’m not sure when but the new tripod has a spring that keeps the mounting bolt elevated making mounting / centering the scope a breeze. It springs into place if you don’t quite have it centered but at least you hear it going up into the bottom of the mount.
Yeah, that's my experience too. The only "wriggle" I've had is on a couple of occasions when unmounting the scope I've been sure I've undone the bolt, yet the tripod has come too when I've tried to lift the mount off. I think you have to lift straight, if you pull at an angle the tripod seems to "grab".
Incidentally lifting the mounting onto the tripod is a lot more positive with my LX90 than it is with the CPC1100 I've got in the last month (aperture fever  ) Not only is the location more positive with the LX, on the CPC you have to rotate the mount until it clicks into place then do up three bolts which are a lot more fiddly than the single, very positive, bolt on the LX90 tripod. The CPC makes me considerably more nervous as the spring loaded pin which you depend on for location isn't anything like as positive as the Meade's spring loaded blot. Not dropped it yet, though - I suppose there may be a first (and last) time!
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kjay
newbie
Reged: 07/03/09
Posts: 1
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Look for a cold solder joint or a corroded connector on the Dec motor. I swapped one of the motors in my old classic and the new one runs just fine. The problem was lack of light in the encoder system. Don't ask how I know, because the warranty police will pull my certificate on my new '90!
KJay
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WolfgangG
member
Reged: 08/06/08
Posts: 13
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Finally i 'fixed'  the declination vibrations in a very unusual way.I deforked the Lx90, bought a used G11 and i am now looking for the mount adapter arriving TOMORROW! 
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Hermit
member
Reged: 10/26/08
Posts: 48
Loc: Northern California
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I bought my 8" LX90 back in October last year, and wrestled with the vibration thing. I decided to go through the scope myself rather than suffer the return cycle(s) that others had described. Bottom line is that I found no one problem to account for the bumping . . . the drive system just seems slightly too weak for the task, and would intermittently stop, then lurch forward at times.
So I did a few things to increase its power and decrease the load. I hooked up each motor to a single AA cell overnight off the scope to break in the motors. I ran the worms on the ring gears for hours to wear in the gears a bit, then cleaned and applied high quality grease, and ran them some more, and re-cleaned. I adjusted the worm play and spring tension to optimal. I found that the ring gears are slightly out of round, and figured a way to mark the high spot and tension the clutches with that spot over the worm to even out the roundness. And I religeously balance the scope.
This kind of stuff is not for everyone, but is quality entertainment for me on a cloudy night. I'm trying my hand with astrophotography on a wedge now, and so far things are going smoothly for an inexpensive fork scope. Err . . . were going smoothly until I dropped the controller last night . . . ouch.
Best,
Rob Crockett
--------------------
Meade LX90 LNT 8" Schmidt-Cassegrain
Standard Wedge, LX90 fork, LX200 tripod
Alan Gee II telecompressor f/5.6
Baader short 1.5cm T-adapter/T-ring
Astronomik CLS-CCD clip filter
Self modified Canon XSi with Baader UV/IR filter.
Meade Model 277 60mm refractor with Orion SSAG
Losmandy V-dovetails for balance and guide scope.
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