On completion and fitting of my new home-made tube rings for my 12" dobbie EQ, I have had to add even more counterweights!!!!
The weight of items:
GS 12" OTA................................ .....43 lbs
ED 80 and rings.............................. ...9 lbs
New rings and cradle........................30 lbs
Counterweight bar and axis bearing.....35 lbs
Counterweights..................... .........100 lbs
Grand Total . . . . . . . . 217 lbs (98.429 kilogram)
And the mount is still rock solid and it is saying 'Gimmee More!"
Pic 1: The counterweights. All 100 lbs of them!!!
Pic 2: Perfect Balance and glides at the touch of a finger!