## CMU’s Introduction to Mechanisms

Yi Zhang, Susan Finger and Stephannie Behrens have prepared an on-line introduction to mechanisms consisting of eight chapters and almost 100 figures. Access it at the link: http://www.cs.cmu.edu/~rapidproto/mechanisms/tablecontents.html

The slider-crank is an important mechanism with a wide range of applications. Here are my notes on its kinematic analysis. http://synthetica.eng.uci.edu/mechanicaldesign101/McCarthyNotes-3.pdf

The four-bar linkage is a basic machine component. It comes in two primary forms the 4R quadridlateral and the slider-crank. Here are my notes for the analysis of the 4R quadrilateral. http://synthetica.eng.uci.edu/mechanicaldesign101/McCarthyNotes-2.pdf

## DC motor torque and power

A copy of my notes on DC motor torque and power can be downloaded at the link: http://synthetica.eng.uci.edu/mechanicaldesign101/McCarthyNotes-1.pdf

## DC motor basics

The basic principles of DC motors are presented by Joe Wolfe of the University of New South Wales (Sydney, Australia) at the link: http://www.animations.physics.unsw.edu.au/jw/electricmotors.html Northwestern University (Chicago, Illinois) presents the basics of a DC motor in the Wiki page: http://hades.mech.northwestern.edu/index.php/Brushed_DC_Motor_Theory

## Mechanical Properties of Steel

The MatWeb site provides detailed information about materials such as the tensile strength of various compositions of steel. For example the search “low carbon steel” results in the list of links to information: http://www.matweb.com/search/QuickText.aspx?SearchText=low%20carbon%20steel

## Unified Numbering System for Materials

There are a variety of numbering systems for materials such as steel. The unified numbering system (UNS) uses a letter to designate a material category followed by five numbers constructed from the existing materials designations to coordinate all of these numbering systems. The unified numbering system (UNS) is described in Wikipedia at the link: Unified […]

## 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. 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 (archived) link: http://www.mechanicalspider.com/comparison.html. Here is an excellent web page about the Klann and Jansen leg mechanisms, as well as other leg designs: Dog Feather Designs. This article compares the leg designs:  Mechanical Spider Using Klann […]