Axle
member
Reged: 04/19/12
Loc: Lake Powell
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Re: Lx80 Multi-mount
[Re: DuiA1]
#5563385 - 12/10/12 12:09 AM
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Thanks for your replies.
I do not have an exact damping time yet because the wind was a little breezy. So really, my previous comments regarding vibration are very loose because the wind was enough to affect the dampening. In fact, the wind eventually ended the session.
The material thickness behind the bolt head is about 3/16" - 1/4" or so. i do not have the exact measurement. We were going to make it thicker by cutting a deeper notch into the disc and leave more material on the back side of the U. But that extra material was not necessary to attain the strength needed. The bolts will never pull through in any scenario in this application. Interestingly, this specific aspect was discussed several times to ensure it would be enough. Another option we were considering was to remove some material off the front of the bolt head and having a shallower cup.
Unfortunately, there are too many other projects in the que to make any more of these at the moment.
I will try and get some dampening times the next time out.
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Jack Huerkamp
Vendor - Waning Moon
Reged: 10/13/05
Loc: Louisiana
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Re: Lx80 Multi-mount
[Re: Axle]
#5563693 - 12/10/12 08:06 AM
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Axel,
At the last star party I was at with the LX80 and C9.25, I did notice the scope being shaken by light breezes while in EQ mode. It was enough to wash out any detail visible on Jupiter. The view of Jupiter was much better in A/A mode as the damping time was 50% less.
My load on the mount was the 22# OTA and I was using a 22# Celestron counterweight.
Jack Huerkamp
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ldesign1
professor emeritus
Reged: 09/17/09
Loc: Northern Illinois
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Re: Lx80 Multi-mount
[Re: Jack Huerkamp]
#5728737 - 03/12/13 06:20 PM
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Has anyone physically counted the amount of teeth on the LX80 worm gear? I can't find any specs on it to input the data in PemPro.
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OzAndrewJ
professor emeritus
Reged: 11/30/10
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Re: Lx80 Multi-mount
[Re: ldesign1]
#5728851 - 03/12/13 07:26 PM
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Gday Ralph
Toothcount wise, the LX80 is the same as an LX90
ie 154 teeth
Andrew Johansen Melbourne Australia
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ldesign1
professor emeritus
Reged: 09/17/09
Loc: Northern Illinois
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Re: Lx80 Multi-mount
[Re: OzAndrewJ]
#5729036 - 03/12/13 09:19 PM
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Thank you Andrew!
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ldesign1
professor emeritus
Reged: 09/17/09
Loc: Northern Illinois
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Re: Lx80 Multi-mount
[Re: ldesign1]
#5729666 - 03/13/13 04:13 AM
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Does anyone know if there is a fuse inside the mount to protect the pc board from burning out if a cable gets snagged? Just wondering because I had a bit of a scare today when my mount all of the sudden stopped in the middle of a slew from a cable snag. I couldn't get it to power back on so I started to disassemble it then I decided to check the cables and connector first. I had a short 6" right angle cable extension connected to the main power cable. When I connected the main cable, the power light came on. But when I connected the short extension to it, no power. So I took apart the extension cable instead and discovered that the snag had caused the wire to separate fron the solder connection so power wasn't reaching the mount. That was a relief. I re-soldered the connection and everything worked fine again.
I know that the hand controller has a selection for cable snag, but I don't know what that does or how it works. I just enabled it as an assumption that it offers some sort of protection. Does any one know for sure?
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OzAndrewJ
professor emeritus
Reged: 11/30/10
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Re: Lx80 Multi-mount
[Re: ldesign1]
#5729670 - 03/13/13 04:32 AM
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Gday Ralph
There are NO internal fuses,
ie if you fry, you die with a Meade scope.
Quote:
I know that the hand controller has a selection for cable snag,
No it doesnt, it has a "cord wrap" function
Quote:
but I don't know what that does or how it works.
Cord wrap ON merely limits how many revs the scope will go one way or the other in RA when doing a goto.
It provides NO protection against cables getting caught whilst in the allowable slewing regions.
Andrew Johansen Melbourne Australia
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ldesign1
professor emeritus
Reged: 09/17/09
Loc: Northern Illinois
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Re: Lx80 Multi-mount
[Re: OzAndrewJ]
#5729788 - 03/13/13 07:30 AM
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No fuse huh! I guess I will start using my old extension with an in-line fuse. At least that will prevent the mount from trying to draw too much current when a snag does occur. Do you think that will work?
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rmollise
Postmaster
Reged: 07/06/07
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Re: Lx80 Multi-mount
[Re: ldesign1]
#5730053 - 03/13/13 10:34 AM
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Most cigarette lighter style plugs have fuses. Will that save your scope? Maybe. Remember: fuses are designed to protect the power source and prevent fires, not to save delicate ICs. 
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chemman
member
Reged: 06/21/11
Loc: Colorado
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Re: Lx80 Multi-mount
[Re: ldesign1]
#5741929 - 03/18/13 10:17 PM
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So I will be doing some experimentation with amperage loading soon. I am going to figure what fuse it will take to protect the thing from physical damage. Has anyone done this already?
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rmollise
Postmaster
Reged: 07/06/07
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Re: Lx80 Multi-mount
[Re: chemman]
#5742467 - 03/19/13 09:05 AM
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Quote:
So I will be doing some experimentation with amperage loading soon. I am going to figure what fuse it will take to protect the thing from physical damage. Has anyone done this already?
I'd be awful careful with that.
As above, that's not the purpose of a fuse. May save the gear, may not.
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Whichwayisnorth
professor emeritus
Reged: 07/04/11
Loc: Southern California
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Re: Lx80 Multi-mount
[Re: rmollise]
#5762639 - 03/28/13 04:06 PM
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FYI I noticed on OPT's website it looks like there is a $200.00 off on these now. Back to the intro price of 799US
Edited by Whichwayisnorth (03/28/13 09:16 PM)
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rmollise
Postmaster
Reged: 07/06/07
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Re: Lx80 Multi-mount
[Re: Whichwayisnorth]
#5762641 - 03/28/13 04:08 PM
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The question I have is "has anything been improved"? A couple of people seem to have received 80s that perform better...
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Hilmi
Carpal Tunnel
Reged: 03/07/10
Loc: Muscat, Sultanate of Oman
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Re: Lx80 Multi-mount
[Re: rmollise]
#5762748 - 03/28/13 05:16 PM
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I suspect that the people had different expectations thats why they feel it performs well. My gut feeling is that Meade would re-brand it as an LX85 if they where to improve the mount so as to distance it from the badly received first edition.
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rmollise
Postmaster
Reged: 07/06/07
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Re: Lx80 Multi-mount
[Re: Hilmi]
#5762917 - 03/28/13 06:35 PM
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Dunno...there was one post that a mount received back from Meade had had various springs removed and no longer exhibited the dreaded "play."
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Hilmi
Carpal Tunnel
Reged: 03/07/10
Loc: Muscat, Sultanate of Oman
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Re: Lx80 Multi-mount
[Re: rmollise]
#5762942 - 03/28/13 06:45 PM
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Ohh, I missed that part, I kinda lost interest on around page 5 of this discussion. Came back in to see what has changed.
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OzAndrewJ
professor emeritus
Reged: 11/30/10
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Re: Lx80 Multi-mount
[Re: rmollise]
#5763018 - 03/28/13 07:17 PM
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Sooooooooo, who's going to open theirs up and have a look 
Be interesting to see if the worm wheel has changed design.
Andrew Johansen Melbourne Australia
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DuiA1
member
Reged: 05/07/12
Loc: Ontario, Canada
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Re: Lx80 Multi-mount
[Re: OzAndrewJ]
#5767981 - 03/31/13 01:08 AM
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Does anyone on this forum have the lx80 autoguiding successfully? The module is on back order so how is one to test autoguiding before warranty expires?
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Hilmi
Carpal Tunnel
Reged: 03/07/10
Loc: Muscat, Sultanate of Oman
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Re: Lx80 Multi-mount
[Re: DuiA1]
#5768005 - 03/31/13 01:33 AM
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You test via pulse guide if ASCOM drivers are available for the mount, the specificss of how to set it up depend on the software you use to guide, but basically, in your guiding software you will find the option to choose guide via telescope or via ST4. Choose via telescope.
Some mounts guide better via pulse guiding while others guide better via ST4. That is a long winded and boring debate. The best way to find out for your specific mount it to try out both methods.
I hope this helps.
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Cameron McCarty
member
Reged: 07/13/12
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Re: Lx80 Multi-mount
[Re: Hilmi]
#5817398 - 04/23/13 12:52 PM
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I will chime in that as far as the legs detaching goes, I had the leg fall off of our LX80 scope just the other day. Luckily I was by my scope and able to catch it and Meade was able to replace it for free.
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