From James Bruton.
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I’m building a special planetary gearbox with two stage reduction for a new walking machine. I also compare with a Cycloidal drive.
Do you remember when I built a Star Wars AT-AT that I could ride on? It walked along ok, but it was very slow – top speed was only around 60 metres per hour which is only 0.02 miles per hour. I could probably have made it go twice as fast by moving two legs forward at a time instead of one, but that still isn’t very fast.
So now I’m going to start an ongoing development project to build a smaller faster quadrupedal walking machine that I can ride on. It needs to go faster, be easier to transport, and I’d also want a number of other features like trying to walk on more varied terrain, but we’ll see how that goes.
This gearbox has a 3.18 : 1 reduction from the motor gears to the large part of the intermediate gears, and then a 6:1 reduction from the smaller part of the intermediate gears to the output gear. That along with the 100:1 gearhead motors gives us a 1908 : 1 reduction, which is similar to both the large cycloidal drive, and the AT-AT gear reductions.
You can support me on Patreon, join my Discord, or buy my Merchandise:
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Patreon: https://www.patreon.com/xrobots
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Other socials:
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Music for your YouTube videos: http://share.epidemicsound.com/xrobots
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CAD and Code for my projects: https://github.com/XRobots
Huge thanks to my Patrons, without whom my standard of living would drastically decline. Like, inside out-Farm Foods bag decline. Plus a very special shoutout to Lulzbot, Inc who keep me in LulzBot 3D printers and support me via Patreon.
HARDWARE/SOFTWARE
Below you can also find a lot of the typical tools, equipment and supplies used in my projects:
Filament from: https://polymaker.com/
Lulzbot 3D Printers: http://bit.ly/2Sj6nil
Bearings from: https://simplybearings.co.uk/
Lincoln Electric Welder: https://bit.ly/2Rqhqos
CNC Router: https://bit.ly/2QdsNjt
Ryobi Tools: http://bit.ly/2RhArcD
3D Printer Filament: http://bit.ly/2PdcdUu
Soldering Iron: http://bit.ly/2DrNWDR
Vectric CNC Software: http://bit.ly/2zxpZqv
CAD content is sponsored by Autodesk Fusion 360
