Meet a specialist in tuning astro mounts
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- เผยแพร่เมื่อ 12 ก.ค. 2022
- In this video we meet Chris (CG-5) a specialist in tuning, servicing and repair of our astro mounts. It is a unique opportunity to look inside his workshop and learn more about a couple of mounts from different manufacturers. We will talk in this video the frist 5 min about mounts in genaral; then from timecode 5:50 it´s about the EQ6R; at 9:43 we talk about the Losmandy G-11 and at 11:40 we talk about Celestron CGX and CGX-L. Finally Chris introduces his modified Celestron CGEM II. At the end of the video we talk about harmonic drive mounts and Chris gives an outlook. Thanks for watching, clear skies, Tom
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Thank you, Tom and Chris. I'm a G-11 owner , and I laughed when Chris mentioned "inch" screws. Subbed !
Thanks for talking about the G11, and for the record, we love metric. ;)
Ah, this is how Chris looks. Great video, thanks for sharing, Tom! I got my IEQ45 repaired and modded by Chris some months ago. Can highly recommend his service!
Hi Joachim Dirks, yes Chris is a magician when it comes to fix mounts ;) He repaired my old EQ6 a while ago and it runs smoothly.
Have to agree on waiting. I'm glad there are plenty of new adopters of harmonic drives because their older mounts hit the market at good discounts. I just picked up an excellent condition cgem 2 for much less than half of the current msrp! Now I just need to tune it up.
Chris said his English isn't very good, but on the contrary, he speaks better English than many people here in America i've met.
Hell yes! Chris...He is the master of optimization!
Thanks guys, very interesting interview :)
Absolutely fascinating video. Thank You. Subscribed!
Hey Tom thanks for the video it was very nice to hear from someone who repairs these on a daily basis and knows so much. I actually run a C925 on my AZEQ6 (same payload) as EQ6. It seems to be handling it pretty well so far but I will see. Thanks again.
Interesting video. I just completed the Hyper-Tune process on my 10 year old CGEM DX so it’s a current matter of interest to me. Chris offered some interesting perspectives on the market. The dialogue was informative also.
Very interesting vidoe, thanks Tom!! The English from both men in this video is better than mine! (And I'm a Brit!)
HollomanUfoLanding that is very kind from you but we still talk some ginglish. ;)
@@tomsastrophotochannel3243 hahaha das ist good! (I am practising Ginglish too ;) )
Hi there, I have an AVX mount 4+ years old that I bought second-hand. I would be interested to get it cleaned up and tuned up, and new bearings also. How can I get hold of Chris?
Very interesting comments. I own a CGEMii currently, so I wish he would have shared what belt he uses to upgrade it. I would just pay this guy to upgrade my mount, but I imagine it would not be very cost effective to ship my mount to wherever this guy runs his business.
Pete F. Chris is located in Germany probably this helps to consider shipment.
@@tomsastrophotochannel3243 I’m quite late but do you know where I can reach Chris?
@@Lasserubinskov sure, check the website cg-5 and send him an email, cs tom
Where do I get the belts and bearings for a rebuild EQ6R pro
Any tips for AZ GTI?
I would be very interested to know where I could buy some precision parts for my CGX mount (replacing the sprockets/belt) - It would be even better to have my mount tuned, but I don't know anyone in my area that does (South Carolina U.S.A.) Thank you for the information and Clear Skies!
I discovered something during hypertuning my cgem ii. The brass worm and motor transfer brass gears are not PERFECTLY round... I think this is common knowledge.... it creates the "wa wa wa" sound when slewing either dec or ra. it can be helped by allowing a tiny gap between motor and worm gear.... but I found that the INSIDE of the gear makes a bigger issue to the "roundness" hence also noise. The gear isnt absolutely tight on the shaft.... so when tightening the grub screws... the gear is even more non circular (I tested this with a laser. However I solved this by drilling holes opposite the grub screws and self tapping 2 more grub screws meaning There are now 4 to tighten. In small increments tightening all and testing each time,... like aligning a polar scope, it really helps to both make the gear more circular and takes out tiny "wobbles" (often the gear isnt absolutely straight so it helps this also)
My mount is so much quieter now.... with no "wa wa wa" sound". This can help get the worm closer too without straining the motor... hence lessening backlash a little. Also, itcan actually help keep a constant voltage and speed. Mostly though it immensly helps with the noise.
As far as backlash Ive found in my personal case thats down to the worm itself and incorrect bearing tightening (and the worm isnt completely perfectly round either) , both on the shaft bearings and the worm housing bearings tightening does help a lot.
Ive got my cgem ii with the tiniest backlash now and the dec, which matters more, has very good tracking compared to what it was. and really no backlash to speak off.
It might need adjustments over time to settle in.
Wow thanks a lot for your comments and suggestions, I am sure that your enhancements will help others to make the mount better. Clear skies Tom
Very Nice. I dont see many work on cgx. How much do you take for working on one? And do you have results to show of its perfomance? Would love for mine to have more reliable performance.
Thank you. I take 570.- € for my care-package. I will make a comparsion in guiding before-after soon. :)
@@cg-5876 Awesome. Been on and off with celestron for a bit but they dont wanna sell me parts and now out of warrenty. Buying a new one is too expensive for me atm. Season is just about to start for me so its not The best time to send it away but i Will probably contact you soon. Do you have any contact information for your shop?
I really need to get the bearings changed on my heq5.
Anthonyexmouth I suggest to get in contact with chris or some other specialist for mounts. Probably you could do it by your own?
@@tomsastrophotochannel3243 been planning to do it myself for about a year. I'm fortunate to have a permanent pier setup, but that is also a bit of a curse because it's such a pain breaking it all down. My guiding is usually around 0.7- 0.9, if/when it regularly goes above 1.0 I'll change the bearings and tune it.
@@anthonyexmouth 0.7 to 0.9 sounds perfect for me. Above 1,0 I would say it depends on your telescope. Change of bearings anyway make sense to me. Good luck!
Does Chris sell his grease mixture?
I'm just wondering if I need to worry right off the bat if the CGX L needs correction right out of the box ---- or it takes a bit of working before I get mount issues--
Amranackerman9656: I think it is a bit of a lottery you can get lucky and the mount works fine out of the box or not. Celestron mounts are good ones but some need a touch up as I have seen. Good luck and clear skies, Tom
So one spends thousands and mounts are some work some don't-- why is that ?
Where can we sent our mount ? I llive in Spain. Thx
Could he be more specific about the precision bearings he uses in the EQ6-R? Where are the replacement belts from?
He could. ;) I use ball bearings in P5 (equals ABEC5) for the main axes and ceramic-hybrid ball bearings, class P6, for the worm shafts. The belts are nothing special, you can by them at any store that sells those belts.
Hello Tom,
Great video, how do I get in contact with Chris
You can contact him at netz@cg-5.de. Hope this helps, cs tom
@@tomsastrophotochannel3243 thank you tom :D
No AP or Paramounts, eh.
Can you give us Chris's contact information?
Service@cg-5.de, sorry for late answer.