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/ LXD75 driving problem
LXD75 driving problem
April 13, 2009 10:19 AM
these days i have a problem with my mount in DEC motor.
when i set its speed to guide mode then press up key it works correctly in regular guide speed, but when i press down key , motor starts working with a average speed for 1 or 2 seconds and then it works correctly with guide speed and this problem happens again and again when i use down key after up key . i've restarted the mount but it didnt help.
by the way , its sound has changed , but its not very unregular.
please help me why i faced this problem and how can i fix it.
"Wherever I am, let me be! The Sky is mine. The windows, the mind, the air, love, earth, are all mine." Sohrab Sepehri Meade LXD75 sn-10" Orion dob 4" 400D Canon 72mm Megrez William Optics
April 13, 2009 10:47 AM
Sound changes are usually not good. Does it sound like it's binding? There are three screws on the worm gear housing to adjust the worm gear engagement.
Frank in the NJ Pinelands MI-250 * CGEM-DX * Orion Atlas EQ-G * Vixen GP-DX w/AutoStar * Vixen VC200L/R200SS * Meade 8" f/6.3 SCT * Intes-Micro M73 * Stellarvue 80/480 LOMO Triplet * Takahashi FS-60C * SXVF-H9 * Full Spectrum modded Canon T3i *
April 13, 2009 2:42 PM
I'm sorry, but I'm not sure I understand you exactly.
My best guess is that your backlash has deteriorated over time and needs to be re-tightened.
Atlas EQ-G Williams Optics Megrez 110 Orion 80ED SXV-H9
My astro-photo website.
In the beginning the universe was created. This has made a lot of people very angry and has been widely regarded as a bad move.
April 14, 2009 7:38 AM
When you change directions the motors move quickly for a bit, then slow to the slew setting. This action is designed to take up the slack in the gear train. The length of time the motor moves qickly is set by the Dec/Alt Percent and RA/Az Percent. They can be found in Setup > Telescope > Dec/Alt Percent (or RA/Az Percent). I believe the default value is 50% for both axis.
/ LXD75 driving problem
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