January 2003: Plankalkul V4 leaves the state of kitchen table development.

Plankalkul V4 CNC parts.

V4 parts: We love that kind of stuff!

Christian welding TIG.

Finally: V4 becomes reality.

This is how everything has started in January 2001: Plankalkül V0.1, a prototype made from Fischertechnik with adjustable chassis geometry. Made for pushing it over my kitchen floor. Hmmm, could it work?

February 2001: Plankalkül V0.9, the first rideable model. Still with adjustable chassis geometry. Yeah, it worked! The front wheel is a castor for furniture. The joystick is made from a pole for land surveying. :-)

A jump from the curbstone brought a sad ending to Plankalkül V0.9. :-(

After some days of mourning the planning phase for Plankalkül V2 starts.

An early version of Plankalkül V2 with improved chassis geometry and board suspension!

I always payed attention to my mascots when i welded something.

That's how my kitchen looked afterwards.