CGEM problems fixed?
Posted 30 October 2012 - 01:54 PM
I've read many old threads highlighting the issues CGEM had, but many of them are a year or more old. I've seen recent posts in mount threads where people reference that the CGEM problems are resolved, but nowhere can I find exactly what was resolved.
One of my main concerns was the reliability and the ability to operate in cold. Someone said that the lubricant used would be too viscous at what I thought were average cold temperatures here in Iowa.
If I'm buying new, I've narrowed down to CGEM, Atlas or IEQ45. The IEQ45 freaks me out because it is so new. The CGEMs reputation is freaking me out, so I'm down to the Atlas, but some of the CGEMs features I find interesting.
Thanks for the help.
Posted 30 October 2012 - 01:58 PM
Posted 30 October 2012 - 02:15 PM
Posted 30 October 2012 - 03:50 PM
It is noisy IMO, maybe not as bad as an LX200 but enough that I don't use it in the backyard where it would bother the neighbors. If that is an issue for you then consider the Atlas instead, it is fairly quiet and is basically the same mount. If I was going to choose between them today I would probably go with the Atlas just because of the noise issue.
Posted 30 October 2012 - 10:55 PM
I think the biggest issues the CGEM had where QC at the end of the production line, resulting in many problems that should never have happened, and customer service when the mounts failed. Mine was back to Torrance for repairs twice in the first 18 months, I'm over 3.5 years now. Replacemnt parts are nearly non-existant and replacement motors are WAY overpriced. Other than that it's a pretty good mount for its price & weight class. I thinks it's hand controller software is as good as anything out there though there still seem to be a bug or two and a deficientcy here or there. I'm 100% visual, pier mounted and have mine loaded to nearly max.
Posted 31 October 2012 - 10:32 AM
Posted 31 October 2012 - 05:47 PM
It worked alot better after it was hypertuned. Better being defined as it produced a smooth(er) PHD graph and was easier to balance. GOTO was much improved as well.
Posted 01 November 2012 - 07:22 PM
There is a Yahoo group and those guys know this mount intimately. Their advice helped me resolve the alignment issue. I have noticed a steep falloff in traffic on that group - maybe the bugs have all been worked out?
Posted 01 November 2012 - 09:31 PM
The cogging effect is still present on many mount (mine does not have it) but a firmware fix is being worked on for that and the effect does have some work arounds.
PE is quite variable. i have had 3 cgems and they ran from 16 (+-8) arc seconds to 180 (+-90) arc seconds. The 180 arc second mount was returned and replaced under warranty. As long as the PE is smooth it can be guided out anyway.
There is a non integer PE component. It Runs at 8/3 worm revolution. For some mounts it is actually higher than the worm PE. Mine runs 75% of the 1st integer and does not guide well. It also makes PEC rather useless in my case. Not all cgems suffer from this os as bad.
My take on the cgem is it is a good value. I would look at it or the Atlas. For longer FL AP this mount is not it.
Posted 02 November 2012 - 10:15 AM