You MUST use supports to print some of these parts, it was really unavoidable.
If you wish to back-drive this, you'll need to use at least -.05 horizontal expansion setting
####This Looks Familiar!
This gearbox is scaled up (150%) from the size used in the robotic arm project, but it doesn't work the same way so its incompatible even if it was scaled back down.
####Assembly
Print the planets with a raft, they will print in the right alignment. leave the raft on until the gearbox is assembled. place the sun gear inside the planets, and put ring gear #2 on. Place a ring closure on ring #2 and then install all the other ring gears.
#####How it works
When the sun gear is turned, Ring Gears #1 & #4 will be at the same potential and Ring Gears #2 and #3 will rotate opposite to each other.
Other Important Info:
#####CAD Files??
I Included the Fusion 360 Project with this, But the most recent version of this project can be downloaded in lots of different formats from this link: http://a360.co/2kWXprN
Feel free to create your own modifications and parts for this project, and if you do, make sure you create a remix and upload them, then I'll add them to my main collection so the whole community can share them! Thanks!
####Gearing Information
Final Ratio 20:1 and 20:-1
Planetary Gear Set A (Modules 1 and 4)
Teeth Sun: 18
Teeth Planets: 12
Teeth Ring: 42
Planetary Gear Set B (Module 2)
Teeth Sun: 14
Teeth Planets: 14
Teeth Ring: 42
Planetary Gear Set C (Module 3)
Teeth Sun: 22
Teeth Planets: 10
Teeth Ring: 42
#####Show Your Work!
Make a "make" and show everyone what you made! (make? :0) Everyone will thank you for it!
####For More Cool Projects and Upgrades, Don't forget to Follow Me on Thingiverse and Subscribe to my Youtube Channel
Gear_Down_For_What
