Hi, Try a spray or squirt of lithium grease. It's white and sold in many hardware stores also Home Depot, Lowes. Bob...
4084
jamezbob
Sep 3, 2007 8:10 am
Hi, Does anyone know what the maximum voltage rating is for the steppers supplied with an EQ-5 mounts drive? The original drive unit uses 6v. However I want to...
4085
Christopher Erickson
data_plumber1
Sep 3, 2007 8:54 am
There are a multitude of different Chinese factories making motor systems for CG-5/EQ-4/HEQ-5/EQ-4/etc. mounts that nobody will be able to give you an accurate...
4086
jamezbob
Sep 3, 2007 9:59 am
Sorry, didn't mean to be dim - it comes naturally ;O) They are SYNTA "clock drive" steppers - supplied from Germany (to the UK) They are Bipolar (4 wire)...
4087
jamezbob
Sep 3, 2007 2:08 pm
One extra piece of information... I measured the resistance of the windings - they are 17.2 ohms James ... the UK) ... better, ... warm ... success...
4088
j_minnerath
Sep 3, 2007 2:47 pm
... used CG5 from a fellow. From the photos he sent it appears to be an intermediate model, a non-goto, but with bearings on the RA side. And a number 93523...
4089
Luiz Eduardo Giorgi
egiorgi
Sep 3, 2007 4:15 pm
Hi James, I use my Orion Sky View Pro's Synta motors driven by a Boxdoerfer MTS3-SDI with 19 V suply. In the MTS3-SDI it is important adjust the PWM current to...
4090
jamezbob
Sep 4, 2007 8:45 am
Hi Luiz, Thanks for your reply, very helpful. Just to confirm - you mean by PWM that: If I "Full Phase drive" the Stepper so all coils are always energised ...
4091
Luiz Eduardo Giorgi
egiorgi
Sep 4, 2007 2:23 pm
Hi James, See my comments in bold bellow. Regards, Luiz Giorgi Sao Paulo, SP Brazil ... In this case 500 mA is the total current to the motor (2 windings). ......
4092
jamezbob
Sep 5, 2007 11:06 am
Hi Luiz, Thanks again for your help. I hadn't realised for the stepper that the total rated current was shared between the windings. Because the stepper is...
4093
Luiz Eduardo Giorgi
egiorgi
Sep 5, 2007 5:41 pm
Hi James, Good work ! and good luck ! Luiz Giorgi Sao Paulo, SP Brazil ... direction....
4094
Luiz Eduardo Giorgi
egiorgi
Sep 5, 2007 5:52 pm
Hi James, It's me again. You are right, each winding is isolated one from another so each one have a current limit. Since I wasn't trying to build a...
4095
Greg Kaiser
gvblk4msn
Sep 6, 2007 11:38 pm
I took my LXD-75 apart and polished all bearing surfaces with 1500 grit paper and WD40 and used White Lithium Grease and reassmeble. Goto's are spot on and...
4096
j_minnerath
Sep 7, 2007 12:50 am
... Pretty crumby foundry practice. Lots of stuff like that coming out of the PRC these days, they have a ways to go when it comes to producing small parts...
4097
Christopher Erickson
data_plumber1
Sep 7, 2007 1:06 am
Better have the paint checked for lead and the grease checked for anti-freeze too? Some day soon some company is going to start advertising their products with...
4098
Mike C
tmb_mike
Sep 7, 2007 2:30 am
NEW! LXD-75 "Nothing from China was used in the manufacture of this product!" New Price $1495 ... From: ScopeMounts@yahoogroups.com...
4099
Christopher Erickson
data_plumber1
Sep 7, 2007 2:48 am
And we would call it the Vixen GP2! Wait a minute... The all-Japanese, no-Chinese Vixen GP2 only costs $700 without a GOTO system! "My advice is free and worth...
4100
j_minnerath
Sep 7, 2007 3:05 am
... Yeah, but not much more than 10 years ago you could get a G11 for under 2 grand. I was making a lot more back then too, retirement income sucks in that...
4101
Mike C
tmb_mike
Sep 7, 2007 4:07 am
... ~$3000 G11's make me cringe a bit... For $500 more you can find a good used AP900QMD.....
4102
Christopher Erickson
data_plumber1
Sep 7, 2007 5:54 am
And we BOTH know how "modest" the ease of use and tracking accuracy is in the Losmandy G-11... -Christopher Erickson...
4103
jamezbob
Sep 7, 2007 10:33 am
Hi Luiz, Just to let you know: I did some asking around and although I didn't get a definitive answer, 200 to 300mA seems to be the ball park figure for the...
4104
rgurnitz
Sep 8, 2007 6:54 pm
I am looking to upgrade my system. I want a mount 9(and telescope) for long duration pictures. I have a Celestron 114 GT and for even medium durations I get...
4105
Christopher Erickson
data_plumber1
Sep 8, 2007 7:31 pm
What is your budget, what kinds of objects are you working with and what kind of camera are you using? Astrophotographers always pick their mount first and...
4106
Dave Vosgien
vosgolf03
Sep 11, 2007 5:41 pm
Well, I finally did it. I couldn't pass up the Meade DSI for $99 including shipping. Now, all I have to do is find someone that has used this little jewel to...
4107
Christopher Erickson
data_plumber1
Sep 11, 2007 6:20 pm
If nobody here has an answer you might try the Meade_DSI, Autostarsuite or Losmandy_users Yahoo groups too. "My advice is free and worth every penny!" ...
4108
Dave Vosgien
vosgolf03
Sep 12, 2007 6:10 pm
-Thanks Chris...I have placed questions in several groups....Dave V -- In ScopeMounts@yahoogroups.com, Christopher Erickson ... Autostarsuite ... has ... cable...
4109
rgurnitz
Sep 13, 2007 12:28 am
Can I hook up a GP-D2 to my PC for control by either The Sky or Starry Night? Thanks Bob...
4110
Christopher Erickson
data_plumber1
Sep 13, 2007 1:26 am
What motor control system is installed on your mount? "My advice is free and worth every penny!" -Christopher Erickson Network Design Engineer 5432 E. Northern...
4111
rgurnitz
Sep 13, 2007 1:35 am
I was thinking of using Starbook S (the Vixen supplied option) on a GP-D2). Thanks Bob...
4112
Christopher Erickson
data_plumber1
Sep 13, 2007 2:25 am
I can't seem to find out if the Starbook S has a serial port or not. And if it does, is there an LX-200 command emulation mode. Maybe someone else can chime...
