How far have you pushed your G11?
Posted 03 December 2012 - 11:33 AM
My question is to those of you who have thrown out the rule book and have thrown a lot of weight at your G11's. I'm looking for empirical experience. How far have you pushed it and how did the motors cope with it?
The reason I ask is that I have almost finished building a 16" f5 newt that will weigh in at nearer 70lbs and I'm quite worried about putting this on my G11 and burning out the motors (not to mention the problems caused by the tube length).
Posted 03 December 2012 - 01:20 PM
Posted 03 December 2012 - 01:45 PM
I have 2 G11 and both are equipped with 66pounds equipment and 66 pounds counterwights since 4 years and motors work fine.
The main question here is the balancing of the mount, because then the only thing the motors do is move slowly the whole equipment and not much force is needed.
As Dwight said one problem can be the length of the scope.
I would say that in order to know it, mount your scope on the G11 and make some carefull tests and you will see what happens and if you feel confident leave it. If you do not feel confident then you will need another mount.
Posted 03 December 2012 - 01:50 PM
Posted 03 December 2012 - 02:05 PM
2 Things make it work well...
#1.....14" Robin Casady dovetail Saddles
#2..... The new HD motors by losmandy...very good!
at least on the dec..(super tourge)
This setup works well.....
I use 44 lbs of counter weight with no problems..The old standard motor would just get warm when slewing,but the new one stays cold to the touch...($225)..
So just try it and then do some of these changes for improvments....
If you load the 16" light,,,no heavy extras,slow down the slew rates....should work...but much over the 70 lbs....maybe..?
Posted 03 December 2012 - 04:19 PM
Posted 03 December 2012 - 06:15 PM
tripod is very strong....I would keep it low,and out of the wind..FOR sure....
I had a 12" F4 AT12IN and it worked ok....
But because of such a long tube you need a long base to
keep flexture down..
I think any scope over a C11 would benifit from a longer
Posted 03 December 2012 - 07:45 PM
It did cross my mind that a longer saddle would help a lot. I will also look into one of those bars that connects the tube to the counterweight bar. Can't remember what they are called.
Posted 04 December 2012 - 08:38 AM
I've hung a Meade 10"f4 SNT, Celestron C6R 152mm f8, & an Ioptron 90mm f4 as a guidescope, & a 30mm finderscope on a HD tripod for an outreach event. It was a clear, dead calm day, but not in a dome doing solar observing. WELL balanced in all axis is an absolute MUST, but it did work, once.
It gave me the ability so show the difference between the 2 scopes. Since then I've only hung the SNT, 90mm & finder scope on a regular basis, no big deal.
I'll probably do the same thing again this year using my HGM-200 for the same setup.
Clear Dark Skies
Posted 04 December 2012 - 11:10 AM
Here's the build thread for those interested...
Posted 07 December 2012 - 07:32 AM
Yup & it just keeps coming back for more. I like that.
Clear Dark Skies
Posted 09 December 2012 - 10:54 AM
Posted 09 December 2012 - 03:45 PM
Posted 10 December 2012 - 09:27 AM
Posted 10 December 2012 - 10:42 AM
Posted 10 December 2012 - 12:22 PM