bonesoup

Thanks for the quick reply. I think you are describing the problem exactly. There are quite a few parts used just to keep the hail-fire gear from having any sideways play (which I can reduce I believe) this is at least one source of unwanted friction - I have a few other thoughts as well. On further inspection my drive train is rather silly. I chose to move the motor outside the main structure in favor of having an open center in the slewing gear itself. There are way too many parts and long axles in the drive train. So it looks like a redesign of the drive train and a reconsideration of how I reduce sideways play in the big gear. Thank You!

Hey all, So I finished the prototype Slewing Gear last night. I loaded it up to see how well it will turn. - I also clearly OVERLOADED it. https://flic.kr/p/CxppjQ In the video it starts to pulse - yes I know it's overloaded :P Two questions: 1) What terms describe this unwanted motion? Physics or engineering terms ect: 2) What kind of solutions exist. ( besides reduce the load ) I'm not trying to solve the impossible, just learn from it to design a better setup which can handle such a load smoothly ( maybe it simply cant ). No worm gears are used to drive this ( this would be my first thought ). Thanks