It can make up to five horsepower. Scale-model engines are a great way to play with the mechanics without needing a lot of space. They allow for tinkering and tuning, and a new video shows how a ...

Beautiful scale model of the Harley Davidson Pan Head engine, correct in every detail, including the potato-potato sound the engine makes at idle.

A modeling fan taught himself the skills to 3D print 1:4 scale engine and wheel masterpieces that have the enthusiast community enthralled.