HarryD
18-12-2015, 01:23 PM
Hi to you all.
The clouds are gone in Sydney. Cannot believe it after that storm. We northern beaches people were very lucky on Wednesday.
After much procrastinating I installed the Rowan belt mod on my EQ6 and changed a few bearings as well.
So, here are some thoughts:
1. Both worm housings had white overspray which I cleaned off with 800 grade paper placed on a flat surface. The kitchen bench, in fact, which is artificial stone and very flat and actually level.
2. A fair bit of grease all over the inside of the casing, cleaned that up.
3. Replaced the worm end and tapered bearings but used the main bearings as they were in good condition and are really overkill for the task.
4. Cleaned the worm gear and lubricated with Superlube.
5. The worm shaft slotted nut on the RA axis was so loose there was at least 5mm of play. How this mount tracked is a bit of a surprise.
6. Long nose pliers are better than the supplied tweezers
7. I did the adjustment of the tension on the worm shaft before I placed it back on the body.
8. I did the worm-wheel mesh adjustment before I reinstalled the motors because I could lightly pull on the belts to gauge the tension.
9. Took lots of pictures as I dismantled each part.
10. Ran the mount back and forth to make sure there was no stalling etc before I took it outside for some pics.
11. Mount is now very very quiet.
12. Polar alignment took a bit longer than usual as one would expect after pulling the whole thing to pieces. I use the PHD2 drift wizard. Next time I assume it will be back to normal. Got it down to 0.08 total RMS error
13. Guiding requires a lot less intervention from PHD2 than the pre belt set up.
14. Did I also say it’s very very quiet. Cannot hear the mount over my QSI683 camera fans.
15. Do lots of reading before doing this. There is loads of material on the web.
Merry Christmas to you all and thank you for being such a great learning resource.
Greg
The clouds are gone in Sydney. Cannot believe it after that storm. We northern beaches people were very lucky on Wednesday.
After much procrastinating I installed the Rowan belt mod on my EQ6 and changed a few bearings as well.
So, here are some thoughts:
1. Both worm housings had white overspray which I cleaned off with 800 grade paper placed on a flat surface. The kitchen bench, in fact, which is artificial stone and very flat and actually level.
2. A fair bit of grease all over the inside of the casing, cleaned that up.
3. Replaced the worm end and tapered bearings but used the main bearings as they were in good condition and are really overkill for the task.
4. Cleaned the worm gear and lubricated with Superlube.
5. The worm shaft slotted nut on the RA axis was so loose there was at least 5mm of play. How this mount tracked is a bit of a surprise.
6. Long nose pliers are better than the supplied tweezers
7. I did the adjustment of the tension on the worm shaft before I placed it back on the body.
8. I did the worm-wheel mesh adjustment before I reinstalled the motors because I could lightly pull on the belts to gauge the tension.
9. Took lots of pictures as I dismantled each part.
10. Ran the mount back and forth to make sure there was no stalling etc before I took it outside for some pics.
11. Mount is now very very quiet.
12. Polar alignment took a bit longer than usual as one would expect after pulling the whole thing to pieces. I use the PHD2 drift wizard. Next time I assume it will be back to normal. Got it down to 0.08 total RMS error
13. Guiding requires a lot less intervention from PHD2 than the pre belt set up.
14. Did I also say it’s very very quiet. Cannot hear the mount over my QSI683 camera fans.
15. Do lots of reading before doing this. There is loads of material on the web.
Merry Christmas to you all and thank you for being such a great learning resource.
Greg