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

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...

Regular readers know of my concerns about the over reliance on commercial gear design software. Some of what you are about to hear may sound famili...

You kids are spoiled! Back in my day it took at least a day to see the results of computer modeling, longer if the courier dropped the box of input...

Hulet self-unloader image courtesy of ASME. Interesting things happen when you start using “non-standard” gear geometry. As early as th...

There is an old saying that if the only tool you have is a hammer, everything looks like a nail. Imagine that you are tasked by your employer to de...

Few designers would feel comfortable with a face to pinion pitch diameter ratio of 2.00 anymore. Some still prefer to select face width by face con...