Miller 2-Cylinder DOHC Race Engine
Craftsman: Ed Miller
Knapp Collection #: 479
Catalog #: 2016.8.31
Contributor: Paul Knapp
Ed Miller’s second engine is an inline twin DOHC with 1″ bore, 1.25″ stroke, and burns methanol (via his custom carburetors) on spark ignition.
Miller 2-Cylinder, 2-Cycle Race Engine
Craftsman: Ed Miller
Knapp Collection #: 480
Catalog #: 2016.8.32
Contributor: Paul Knapp
Made from a pair of modified “weed-eater” engines, this 2-cylinder racing engine was slated to power a model speed boat.
Miller DOHC Water-Cooled 2-Cylinder Race Engine
Craftsman: Ed Miller
Knapp Collection #: 478
Catalog #: 2016.8.30
Contributor: Paul Knapp
Suitable for a radio-controlled car or boat, Ed Miller’s first engine is this dual-overhead-cam (DOHC) single with a bore of 1″ and a stroke of 1.25″.
Miniature .020 Outboard Motor
Craftsman: Daniel "Buzz" Brunkow
Catalog #: 2013.41.2
Contributor: Daniel "Buzz" Brunkow
Daniel Brunkow custom built this .020 outboard boat motor based on a Cox engine.
Miniature 3-Cylinder Radial Engine
Craftsman: Cliff Bumpus
Knapp Collection #: 78
Catalog #: 2009.9.09
Contributor: Paul Knapp
Cliff Bumpus designed and machined this miniature engine from bar stock (aluminum ingots). The cylinders are spaced 120° apart in a circular pattern.
Miniature 7-Cylinder Radial Engine
Craftsman: Pius Job
Knapp Collection #: 86
Catalog #: 2008.16.14
Contributor: Paul Knapp
This engine burns methanol (with oil mixed in for lubrication) on glow ignition and turns a 24-10 propeller at 6,000 rpm. The engine is 10”-long, 9”-wide, and 15”-high (on stand).
Miniature 7-Cylinder Radial Engine
Craftsman: Pierre Blais
Knapp Collection #: 83
Catalog #: 2009.9.11
Contributor: Paul Knapp
This 7-cylinder radial engine burns a methanol/castor oil mixture on glow ignition. The engine is 10”-long, 11”-wide, and 12”-high.
Miniature 7-Cylinder Radial Engine
Craftsman: Lee Root
Knapp Collection #: 101
Catalog #: 2009.9.14
Contributor: Paul Knapp
This miniature 7-cylinder radial engine was machined entirely from bar stock. Mr. Root’s 7-cylinder was ahead of its time and more advanced than most miniature engines made today.
Miniature Brass Oscillating Steam Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.65
Donor: Mark Petersen
This miniature brass oscillating steam engine is smaller than a US quarter.
Miniature Engine and Generator
Craftsman: Birk Petersen
Catalog #: 2016.15.77
Donor: Mark Petersen
This miniature engine runs a tiny generator to produce electricity.
Miniature Flash Steam Engine
Craftsman: Unknown
Knapp Collection #: 371
Catalog #: 2016.8.5
Contributor: Paul Knapp
The builder and date for this miniature flash steam engine are unknown. All of the castings are iron and have numbers on them indicating it might have been built from a kit.
Miniature Hit-n-Miss Engine
Craftsman: Phillip Duclos
Catalog #: 2015.11.1
Donor: Jon Harting
This miniature hit-n-miss engine is remarkably tiny and was featured in the book, The Shop Wisdom of Phillip Duclos.
Miniature Hit-n-Miss Engine
Craftsman: Phillip Duclos
Catalog #: 2015.11.2
Donor: Jon Harting
This tiny hit-n-miss engine was being built as a scaled down version of an engine that Mr. Duclos had previously made.
Miniature Model Ski Boat With Outboard Engine
Craftsman: Daniel "Buzz" Brunkow
Catalog #: 2013.41.1
Contributor: Daniel "Buzz" Brunkow
Daniel Brunkow built this miniature wooden model flatbottom ski boat with a tiny outboard engine attached. The mahogany boat is only about 6″ long.
Miniature Oscillating Steam Engine
Craftsman: Jerry Kieffer
Catalog #: 2008.3.1
Donor: Jerry Kieffer
Jerry Kieffer built this incredibly small oscillating steam engine. In fact, it is likely the smallest working steam engine in the world.
Miniature SJ7 Pulsejet Engine
Craftsman: Mike Early
Knapp Collection #: 40
Catalog #: 2008.10.10
Contributor: Paul Knapp
This miniature pulsejet engine operates exactly like the V1. It burns regular gasoline and has a variable thrust range from 1/2 to 6 1/2 pounds.
Miniature Steam Plant with Boiler and Two Steam Engines
Craftsman: Jack Randall
Catalog #: 2018.18.4
Donor: Katherine Randall
This miniature steam plant features a boiler and two small steam engines.
Miniature Turbocharger
Craftsman: Frank Kurz
Knapp Collection #: 261
Catalog #: 2011.27.33
Contributor: Paul Knapp
Frank Kurz machined this small turbocharger from aluminum and steel bar stock, and he tested the turbo on a small engine, but the test results are unknown.
Model 100 Electric Boiler With Steam Engine
Craftsman: California Technical Toy Company
Catalog #: 2012.41.1
Donor: The Les Cade Family Trust
This toy steam plant consists of an electrically heated boiler to produce steam to power a small steam engine.
Showing 20 of 679 exhibits.