At another side-project site of mine I have been doing a multi-park review of a “chainless” bike. Instead of a chain, it uses a shaft. Instead of a derailleur, it uses an internal hub. The concept of a chainless bike is very, very old, but Dynamic Bicycles in Rhode Island has taken the idea and updated it with modern technology.
If you have any interest in biking tech, drop by and check out this review:
The Dynamic Bicycles Runabout 8 model is a hybrid bike (meaning it’s bigger/heavier than a street bike, but not quite a mountain bike). Getting rid of the chain solves a ton of problems/challenges with maintaining/tuning a traditional bike. Very cool.