If you have problems with heavy craft (we're talking at or around 100 Tons) I have made some gear that can be operated, drama-free, no dancing or jerking. The link to the proof-of-concept can be found HERE.
For heavier craft I plan to make even more heavy duty gear in the next few days. I hope this is something that helps the community make more awesome creations! please contact me if you have questions on this.