This is an upgraded version of my old "bipEDD" walker. The design
is centered around the same principle and mechanism but is more
compact and lighter - and generally neater.

In functional aspect its center of gravity is higher than the
previous model, which makes it a bit wobblier but also increases
the weight shift when tilting and allows for a smaller footprint.
It's about the same speed, perhaps a little faster. I can't quite
determine as the oldschool motor that had been used broke - which
was also a reason why I felt the need to pull out my dusty Lego
containers and update the construction.

I haven't built anything in more than 6 years. It was nice to
once again sit down for some hours and apply some serious
thinking into the realm of "Lego Laws" and intuitive mechanics.

Max Pihlström (max.pihlstrom åt gmail döt com)
September 2009