Re: FS: Gemini-1 and deluxe hand controller
Thanks, John...Glad to know you are not in panic mode.? I do have a spare Gemini 1 too (for 2 active Gemini 1's on a G11 and GM8), but the spare lacks the hand controller. ?
As a group, we are in good shape for repairs on Gemini 1s.? David has repairs covered in UK, and his breakthrough on the motor control logic chips is very important.? I've been able luckily to fix a few in the US.? Spare parts are still available for most of the system.?
It is great to have almost continual improvements in mechanics and electronics and software going on worldwide, using the Losmandy chassis.? The mark of a great group.
Best, Michael?
On Sep 3, 2017 11:22, "John Hobbs hobbs_john@... [Losmandy_users]" < Losmandy_users@...> wrote:
?
Michael:
It was such a good buy could not pass up.? Nothing wrong with my unit, but haven't used it in a while.? Hope to get it back up and running.? Had a problem with first start up after sitting for a few years, but haven't gone back to? it.? Would be nice to have a spare at a reasonable price.? I personally see no reason to go to G2.
-----Original Message-----
From: Michael Herman mherman346@... [Losmandy_users] < Losmandy_users@yahoogroups.com>
To: Losmandy_users < Losmandy_users@yahoogroups.com>
Sent: Sun, Sep 3, 2017 10:16 am
Subject: RE: [Losmandy_users] FS: Gemini-1 and deluxe hand controller
?
David,
Someone got a great bargain...very nice of you to offer that. ?
John,
Is there something wrong with your present unit? ...or are you just seeking a spare?? The boards are usually repairable by replacing the faulty component. ?
Bren,
Sorry to read of your hospitalization. Get well soon.? Funny spelling of Aus. Is it not magical and perfect with talking joeys as the movies show??
Michael?
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Re: FS: Gemini-1 and deluxe hand controller
Michael:
It was such a good buy could not pass up.? Nothing wrong with my unit, but haven't used it in a while.? Hope to get it back up and running.? Had a problem with first start up after sitting for a few years, but haven't gone back to? it.? Would be nice to have a spare at a reasonable price.? I personally see no reason to go to G2.
John Hobbs
hobbs_john@...
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-----Original Message-----
From: Michael Herman mherman346@... [Losmandy_users]
To: Losmandy_users
Sent: Sun, Sep 3, 2017 10:16 am
Subject: RE: [Losmandy_users] FS: Gemini-1 and deluxe hand controller
?
David,
Someone got a great bargain...very nice of you to offer that. ?
John,
Is there something wrong with your present unit? ...or are you just seeking a spare?? The boards are usually repairable by replacing the faulty component. ?
Bren,
Sorry to read of your hospitalization. Get well soon.? Funny spelling of Aus. Is it not magical and perfect with talking joeys as the movies show??
Michael?
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Re: FS: Gemini-1 and deluxe hand controller
David,
Someone got a great bargain...very nice of you to offer that. ?
John,
Is there something wrong with your present unit? ...or are you just seeking a spare?? The boards are usually repairable by replacing the faulty component. ?
Bren,
Sorry to read of your hospitalization. Get well soon.? Funny spelling of Aus. Is it not magical and perfect with talking joeys as the movies show??
Michael?
?
astromart or astrobuysell ¡ ? ?
I guess I misunderstood.? Is there anywhere to find another board for a backup?
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Re: FS: Gemini-1 and deluxe hand controller
astromart or astrobuysell ¡ ?
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: 03 September 2017 04:49
To: Losmandy_users@...
Subject: Re: [Losmandy_users] FS: Gemini-1 and deluxe hand controller?
I guess I misunderstood.? Is there anywhere to find another board for a backup?
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Re: FS: Gemini-1 and deluxe hand controller
I guess I misunderstood.? Is there anywhere to find another board for a backup?
John Hobbs
hobbs_john@...
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-----Original Message-----
From: 'David C. Partridge' david.partridge@... [Losmandy_users]
To: Losmandy_users
Sent: Sat, Sep 2, 2017 8:53 pm
Subject: RE: [Losmandy_users] FS: Gemini-1 and deluxe hand controller
?
John,
?
It was already sold (to someone else) when you asked.
?
Dave
?
David:
I'm purchasing the reworked board and I need to know how and what to pay you.? Let me know as I really want the board.
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Re: Is this blue grease from a broken or ruptured bearing?
Thanks buddy! ? Scott found me on CN regarding my original clutch issue with the help of his assistant Tanya i think her name is. ?They said its normal and to wipe it off. ?Apparnetly these bearangs can be cleaned out and repacked. ?Im not going that far this time. ? Thansk for reposndng bud it wont be my only question... the next post will be what the optimal worm spacing?? Abraham
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Re: FS: Gemini-1 and deluxe hand controller
John, ? It was already sold (to someone else) when you asked. ? Dave
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: 02 September 2017 20:23
To: Losmandy_users@...
Subject: Re: [Losmandy_users] FS: Gemini-1 and deluxe hand controller?
David:
I'm purchasing the reworked board and I need to know how and what to pay you.? Let me know as I really want the board.
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Re: Is this blue grease from a broken or ruptured bearing?
Hi Abraham,?
That's nothing to worry about, it's just the normal high pressure type grease the bearings probably came packed to overflowing with when the bearings were manufactured. I'm pretty sure Scott buys standard commercial grade bearings from various sources which can come with lube colored just like that. Standard dinosar oil green seems to the most popular but red or purple or black or white are also out there, mine had this greenish-purple stuff that had broken down from the heat and left blobs of dried out hardened lubricant inside the bearings and a sticky oily goo all over the mount inside and out. Kerosene or mineral spirits will get you all cleaned up, be sure to use clean dry shop air to blow out your solvent completely then let the bearings "dry" for a day or two before relubing with my favorite stuff - SuperLube.?
Cheers/Chip
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Re: FS: Gemini-1 and deluxe hand controller
David:
I'm purchasing the reworked board and I need to know how and what to pay you.? Let me know as I really want the board.
John Hobbs
hobbs_john@...
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-----Original Message-----
From: 'David C. Partridge' david.partridge@... [Losmandy_users]
To: Losmandy_users
Sent: Sat, Sep 2, 2017 12:07 pm
Subject: RE: [Losmandy_users] FS: Gemini-1 and deluxe hand controller
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Re: Is this blue grease from a broken or ruptured bearing?
How do I post photos to this thread? Or edit my posts? I did post some photos to my album of the blue grease.
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Is this blue grease from a broken or ruptured bearing?
I regreased and reassembled the Dec of my G11 and didn't see this blue grease at the bearing of the worm wheel. I don't know alot about bearings or these mounts so I'm wondering if something ruptured in there?
What should I do? Wipe it up and continue? I'm using superlube.
Thanks for helping me out!
Abraham
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Re: FS: Gemini-1 and deluxe hand controller
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Re: FS: Gemini-1 and deluxe hand controller
Now sold.
David
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-----Original Message-----
From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: 01 September 2017 13:57
To: Gemini_Users@...; Losmandy_users@...
Subject: [Losmandy_users] FS: Gemini-1 and deluxe hand controller
:
The upshot is that I have a G-1 and deluxe hand controller available FS here
in UK.
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Re: DEC latency in one direction
Good reply.
You can also switch the cable output between DEC and RA too, and determine if the problem is in the DEC motor etc. ?vs the Gemini unit. ?
Then you can get down to the possibility that the worm coupling may be loose (check those setscrews!)
Best, Michael?
On Sep 1, 2017 06:00, " glatiak@... [Losmandy_users]" < Losmandy_users@...> wrote:
?
Thanks, Michael.
That was my first thought... but the behavior is uniform regardless of the source of command input. And I did investigate the worm mesh. It is very binary in that on command it either moves or it doesnt. And when it doesnt there is no indication that the motors are straining against something. In fact, there is no indication that the motor is being powered at all. So I have turned to looking at it as a software/electronics issue rather than mechanical or traditional 'user error on device'. The RA axis exhibits none of this.
g
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Re: DEC latency in one direction
Thanks, Michael.
That was my first thought... but the behavior is uniform regardless of the source of command input. And I did investigate the worm mesh. It is very binary in that on command it either moves or it doesnt. And when it doesnt there is no indication that the motors are straining against something. In fact, there is no indication that the motor is being powered at all. So I have turned to looking at it as a software/electronics issue rather than mechanical or traditional 'user error on device'. The RA axis exhibits none of this.
g
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FS: Gemini-1 and deluxe hand controller
Not long back I was sent a Gemini-1 for repair. Quite a few parts were
toast including both the Qaudrature Decoder ICs, and neither Ren¨¦ nor Scott
had any to sell at the time (*).
So on my no-fix, no fee basis the owner told me to keep it for spares/repair
and found another G1 to replace it.
Since then I've been investigating the motor controller circuitry in the G-1
and set out to re-create the decoder PALs in the G1.
I had what I thought was a workable CUPL file on Thursday when the SOIC to
DIP adapter for my ROM burner turned up.
As I had one of the decoder ICs in hand (3750022-01 Rev. 2) I tried to see
if I could read it. Much to my immense surprise the security fuse had not
been set and I could read it.
This meant that I was able to burn replacement ICs directly from the JEDEC
file and repair this G1.
The upshot is that I have a G-1 and deluxe hand controller available FS here
in UK. I've upgraded the ROM to Level 4 V1.05 and modified the serial port
to put +5V on pin 1 just like the G-2.
I'm asking ?150 plus shipping for it which is my normal repair fee. If
interested please contact me off list [mailto:david.partridge@...]
(*) Since then, Ren¨¦ has sweet talked Aveox into doing a run of these ICs
and has purchased a number of them for his use. If you need them you can
get them from either Ren¨¦ or myself.
Clear, dark skies
David
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File - Guidance on Posting Documents and Pictures.doc
File : Guidance on Posting Documents and Pictures.doc
Description : A few rules and comments to prevent anarchy in the files and photos section
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Re: G11 Dec does not lock after re-greasing.....please help!!
Hahaha! ? I knew it was something obvious and it occurred to me a few times which I quickly brushed off thinking that the clutch works without it. ??
Thanks for the encouragement! ? Abraham
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Re: G11 Dec does not lock after re-greasing.....please help!!
You solved it! ?The clutch just locks against the worm wheel. ? The Oldham coupler doesn¡¯t have anything to do with it; it¡¯s to allow for misalignment of the motor and worm shafts when the worm is adjusted.?
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I guess I should say as I came across this problem the only difference between the RA and DEC was that I removed the worm block assembly on the DEC. ??Hence , this is why it can spin round and round!! ??Is this why these mounts have the Oldham coupler on the worm so that the teeth don't get striped out? ------------------------------------ Posted by: ashadbeh@...------------------------------------ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: ??? <*> Your email settings: ???Individual Email | Traditional <*> To change settings online go to: ??? ???(Yahoo! ID required) <*> To change settings via email: ??? Losmandy_users-digest@... ??? Losmandy_users-fullfeatured@...<*> To unsubscribe from this group, send an email to: ??? Losmandy_users-unsubscribe@...<*> Your use of Yahoo Groups is subject to: ???
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Re: G11 Dec does not lock after re-greasing.....please help!!
I guess I should say as I came across this problem the only difference between the RA and DEC was that I removed the worm block assembly on the DEC. Hence , this is why it can spin round and round!! Is this why these mounts have the Oldham coupler on the worm so that the teeth don't get striped out?
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Michael Herman
David C. Partridge