## Koenigsegg door system

The doors of the Koenigsegg CCX open using the “dihedral synchro-helix door actuation” system. You can see this movement on the video

## Material Properties Charts

Cambridge University provides a useful overview of materials properties such as the chart below.

Elastic Modulus v. Density

The tutorial can be accessed at the link:
http://www-g.eng.cam.ac.uk/125/now/mfs/tutorial/non_IE/charts.html

## Comparison of Klann and Jansen leg linkages

Joseph Klann provided a useful comparison of the leg designs for the Mondo Spider and Theo Jansen’s Strandbeest at this unfortunately dead link: http://www.mechanicalspider.com/comparison.html. I keep in here in case he brings it back.

Here is an excellent web page about the Klann and Jansen leg mechanisms, as well as other leg designs: Dog Feather Designs.

This is a youtube video prepared by William Thielicke that illustrates the two leg mechanisms.

## Mondo Spider walking machine

This walking machine is known as the Mondo Spider. More information is available at Mondospider.com.

The leg of the mondo spider has the topology known as a Stephenson six-bar and is described in US Patent 6,260,862 awarded to Joseph Klann. Access it through the link:

Wikipedia calls this the Klann linkage which is described here:

## Theo Jansen’s walking machine

Theo Jansen builds amazing walking machines.
Each leg is an eight-bar linkage. The Wolfram Demonstration Project models this linkage in a Mathematica notebook. See the link:

## NIST Periodic Table

Periodic Table

The National Institute of Standards and Technology provides an on-line periodic table. Access it and other information at the link:  Periodic Table

National Institute of Standards and Technology

## Geometric Dimensioning and Tolerancing

This is a link to notes on Geometric Design and Tolerancing by Prof. Graeme Britton of Raffles Design Institute, Singapore.

Prof. Britton\’s Notes on GD&T

http://synthetica.eng.uci.edu/mechanicaldesign101/GDandT.pdf

Here is another excellent set of notes from the Technical College of New Jersey on geometric dimensioning and tolerancing.

## Linkage for an RV deployable top

This design concept is an 8-bar linkage developed by Minshan Tsai and GimSong Soh for my advanced mechanisms class lifts the top of a recreational vehicle to create a second story, UCI Robotics and Automation Lab. It is on YouTube: