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

As mentioned in my last posting, blank sheets of paper present a huge challenge to any machinery designer. For the beginner, it is even a higher hu...

Today’s title does not refer to writer’s block. After 660 contributions to the magazine and blog, I still have a few things to cover ahead of my pl...

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...

We left the gear tribe arguing over how to solve the problems that were cropping up with the new-fangled double helical or herringbone designs. Fas...