Open Crank 6 Inline Engine 

Open Crank 6 Inline Engine 

Craftsman: Randall Cox 

Knapp Collection #: 586

Catalog #: 2019.10.9 

Contributor: Paul Knapp

This Open crank 6 inline engine was designed by Randall Cox, and built by Ramon Hoagland in 2018.

Opposed Piston 2-Cylinder Engine

Opposed Piston 2-Cylinder Engine

Craftsman: Ramon Hoagland

Knapp Collection #: 738

Catalog #: 2023.2.4

Contributor: Paul Knapp

This opposed piston 2-cylinder engine is 16″-long, 10″-wide, 9″-high, and weighs about 15 lbs.

Oscillating Steam Engine

Oscillating Steam Engine

Craftsman: Rudy Kouhoupt

Donor: Susan Alvaro

This small oscillating steam engine is another illustration of the variety of different configurations built by Rudy Kouhoupt.

Oscillating Steam Engine

Oscillating Steam Engine

Craftsman: Rudy Kouhoupt

Donor: Susan Alvaro

This oscillating steam engine, designed and built by Rudy Kouhoupt, has served as a great beginner project for eager model engineers.

Otter 30 Inline 4-Cylinder Boat Engine

Otter 30 Inline 4-Cylinder Boat Engine

Craftsman: Dr. Haydock

Knapp Collection #: 42

Catalog #: 2009.9.04

Contributor: Paul Knapp 

Dr. Haydock designed single-cylinder, 2-cylinder and 4-cylinder engines for model boats. He built a handful of these Otter 30 cc engines from his own patterns and castings.

Otto-Langen Atmospheric Engine

Otto-Langen Atmospheric Engine

Craftsman: Ramon Hoagland

Knapp Collection #: 547

Catalog #: 2017.27.1

Contributor: Paul Knapp 

This Otto-Langen atmospheric engine was built at 1/7 scale and measures about 11” in diameter by 24”-high. It is a model of the world’s first production combustion engine.

Showing 20 of 652 exhibits.

Presented by The Joe Martin Foundation for Exceptional Craftsmanship