How to calculate the involute of the circle for gear tooth design.

This video follows on from part 1 which details how gears of different diameters interact or mesh, identifies which characteristic control the gear ratio and why the module is important. The relationship between addendum and dedendum in terms of clearance is also discussed. This video details characteristics of gear design including the top land, face, flank, bottom land, gear tooth profile, pitch circle, circular pitch, dedendum, addendum, whole depth, addendum circle, clearance circle, root circle, base circle, pressure angle, line of action and angle of interaction.