What's New in Programs • Paypal can be used to purchase software from this site. A purchase order, check, or wire transfer can still be used if preferred. • All programs can now be network licensed on a Windows terminal server.  Contact us for details. • Dynacam and Dynacam Plus have been completely rewritten for compatibility with 64-bit Windows 7. •Program Linkages replaces the programs Fourbar, Fivebar, Sixbar, Slider, and Engine and combines all those linkages in one package, which is compatible with 64-bit Windows 7. • Dynacam Plus includes a feature that allows a measured or empirical cam profile to be imported.  The data is then splined and the cam functions created to analyze its dynamics or redesign it with better functions. • Dynacam Plus also allows the design of a cam-driven fourbar or sixbar linkage or slider follower train and can share data with program Linkages so that the cam-driven linkage designed in Dynacam can be dynamically analyzed in Linkages. • Program Matrix is free with the purchase of any other software program from this site.

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What's New in Books • The 5th edition of Design of Machinery is now available and has the new program Linkages, Dynacam, and Engine on its DVD, which also contains a number of videos and tutorials plus Hrones and Nelson's Atlas of fourbar coupler curves.  It also offers the download of a low-cost version of the Working Model program. • The 4th edition of Machine Design is now published and contains a new chapter on Design of Weldments. • The 2nd edition of the Cam Design and Manufacturing Handbook has new material on globoidal cams, torque-compensation cams, and multi-dof modeling of cam-follower systems. • The latest student versions of Design of Machinery's programs can be downloaded from this site. But, access is limited to professors who have adopted the book for a class. Click here to request a password if you qualify. • Student owners of Machine Design can now log in for updates on that book. •Student owners of Kinematics and Dynamics of Machinery can log in to download the book software.