Gears are wonderful things. Unfortunately, they require support from shafts, bearings, and some sort of housing to be useful. Without these things,...

In the last blog posting, I covered the importance of developing a Product Specification and getting all the “stakeholders” to agree on what a succ...

Once you have an idea what your device will look like, the urge to start designing is strong. Before you start calculating gear ratings, however, t...

Before we move on from helix angle restrictions, I want to say a few things about face contact ratio. Soon after the appearance of the first helica...