Engineers Edge has new content / pages as follows:

Hole pattern - location Calculator and graphing
/calculators/hole_pattern_calculation.htm

Shaft and Journal Pivot Friction - Torque Equations and Calculator
/friction/shaft_journal_calc.htm

Conical Pivot Friction - Torque Equations and Calculator
/friction/conical_pivot.htm

Flat Shaft Pivot - Torque Friction Equations and Calculator
/friction/pivot_flat_calc.htm

Collar Bearing Pivot and Torque Equations and Calculator
/friction/collar_bearing.htm

Truncated Cone Pivot Friction - Torque Equations and Calculator
/friction/truncated_cone_calc.htm

Related link:

Coefficient of friction
/coeffients_of_friction.htm