This design is very malleable and open to re-interpretations, improvements, and upgrades.
It is possible to motorize these machines as well for remote control fun!
Guides to build larger versions of this walking machine have been published here
Note: these versions use 3D printed crankshafts which makes the assembly process more complex.
The Humble Velocipede is a continuation of this Kickstarter project, which succeeded in 2012 (bamboo Velocipedes are no longer being produced).
If you'd like to buy one already assembled, an assortment of Humble Velocipede prototypes are available for sale here:
The digital simulacrum is always available to play with here: