1/6 Scale Cirrus Model Airplane Engine 

1/6 Scale Cirrus Model Airplane Engine 

Craftsman: Charles “Chuck” Harty

Knapp Collection #: 519

Catalog #: 2017.27.14 

Contributor: Paul Knapp 

This is Chuck Harty’s rendition of the 1/6 scale Cirrus designed by Merritt Zimmerman. It is 7”-long, 6”-high, 3”-wide, and weighs 2 pounds 9 ounces on the aluminum base.

100cc 2-Cylinder Opposed Aircraft Engine

100cc 2-Cylinder Opposed Aircraft Engine

Craftsman: Unknown

Knapp Collection #: 187

Catalog #: 2008.16.35

Contributor: Paul Knapp

Commercially available cylinders, possibly from a motorcycle, were used to produce this aircraft engine in Germany.

14-Cylinder, Twin-Row Radial Engine

14-Cylinder, Twin-Row Radial Engine

Craftsman: Dennis Fadden

Knapp Collection #: 04

Catalog #: 2008.16.01

Contributor: Paul Knapp

This 1/8 scale 14-cylinder radial engine model operates on regular gasoline with spark ignition and swings a 12-inch diameter propeller.

18-Cylinder, Two-Row Radial Engine

18-Cylinder, Two-Row Radial Engine

Craftsman: Harold Beckett

Knapp Collection #: 41

Catalog #: 2008.16.06

Contributor: Paul Knapp

Harold Beckett handcrafted this 1/4 scale engine from drawings provided by Sam and Lee Hodgeson. The engine operates on regular gasoline with dual spark ignition.

18th Century Navy Mount Canon Kit

18th Century Navy Mount Canon Kit

Craftsman: Mike Showah, American Edelstaal

Knapp Collection #: 306

Catalog #: 2012.33.1

Contributor: Paul Knapp

This cannon kit for a 13th century navy mount was distributed by American Edelstaal. The cannon is 7”-long and 5”-wide.

1937 Ford Flathead V8 in 1/4 Scale

1937 Ford Flathead V8 in 1/4 Scale

Craftsman: Roger Butzen

Knapp Collection #: 759

Catalog #: 2024.5.6

Contributor: Paul Knapp

Roger Butzen, of Texas, built this 1937 Ford Flathead V8 engine in 1/4 scale sometime in the 1990s.

2-Cylinder Flame Licker Engine

2-Cylinder Flame Licker Engine

Craftsman: Alphonse C. Vassallo

Knapp Collection #: 229

Catalog #: 2009.9.34

Contributor: Paul Knapp 

This 2-cylinder flame licker engine is 12″-long, 6.5″-wide, 3.5″-high, and weighs 7 lbs. These engines are variously called vacuum, flame-licker or flame-gulper engines.

2-Cylinder Opposed Model Airplane Engine

2-Cylinder Opposed Model Airplane Engine

Craftsman: Barry Robinson

Knapp Collection #: 144

Catalog #: 2008.10.42

Contributor: Paul Knapp

This engine has a bore of 19 mm and a stroke of 19.2 mm for a total displacement of 10.9 cc. The cylinders have chrome plated brass liners, and the pistons have compression rings.

2-Cylinder Opposed Model Airplane Engine

2-Cylinder Opposed Model Airplane Engine

Craftsman: Alphonse C. Vassallo

Knapp Collection #: 231

Catalog #: 2009.9.36

Contributor: Paul Knapp 

This two-cylinder, four-cycle engine is completely machined from steel and aluminum bar stock, including Al’s custom-designed carburetor.

2-Cylinder Reversible Stirling Engine

2-Cylinder Reversible Stirling Engine

Craftsman: Alphonse C. Vassallo

Knapp Collection #: 230

Catalog #: 2009.9.35

Contributor: Paul Knapp 

This 2-cylinder reversible Stirling cycle engine is 21″-long, 8″-wide, 7″-high, and 12 lbs.

2-Cylinder Vertical Steam Engine

2-Cylinder Vertical Steam Engine

Craftsman: Alphonse C. Vassallo

Knapp Collection #: 228

Catalog #: 2009.9.33

Contributor: Paul Knapp 

Stuart Models provided the castings for this model D10 vertical steam engine. The engine is 8.5″-long, 5″-wide, 6″-high, and weighs 4.5 lbs.

252 Single-Cylinder Model Airplane Engine 

252 Single-Cylinder Model Airplane Engine 

Craftsman: Suevia

Knapp Collection #: 220

Catalog #: 2009.9.30 

Contributor: Paul Knapp

The Suevia 252 single-cylinder model airplane engine was designed and built in the 1980s. The engine is 6”-long, 3.5”-wide, and 6”-high.

3-Cylinder Radial Model Airplane Engine

3-Cylinder Radial Model Airplane Engine

Craftsman: Unknown

Knapp Collection #: 175

Catalog #: 2008.16.28

Contributor: Paul Knapp

This radial engine features a single rocker box that houses both the intake and exhaust rockers, and uses only one large tube to enclose both pushrods.

3-Cylinder Radial Model Airplane Engine

3-Cylinder Radial Model Airplane Engine

Craftsman: 3W Engines

Knapp Collection #: 12

Catalog #: 2011.27.2

Contributor: Paul Knapp 

This spark-ignition 2-cycle engine is composed of three single-cylinder engines geared together within one common crankcase.

4-Cylinder, Water-Cooled Inline Boat Engine

4-Cylinder, Water-Cooled Inline Boat Engine

Craftsman: Unknown

Knapp Collection #: 255

Catalog #: 2011.27.31

Contributor: Paul Knapp 

This 4-cycle water-cooled marine engine burns methanol or gasoline on glow ignition and sports an electric starter.

4-Port Riley Model A Racing Engine

4-Port Riley Model A Racing Engine

Craftsman: Ron Bement

Knapp Collection #: 498

Catalog #: 2016.44.9

Contributor: Paul Knapp

This 4-port Riley Model A racing engine OHV conversion measures 14″-wide, 13″-tall, 18.5″-long, and weighs 25 pounds.

426 Hemi Powered Cobra

426 Hemi Powered Cobra

Craftsman: Roger Butzen

Knapp Collection #: 783

Catalog #: 2024.5.19

Contributor: Paul Knapp

Roger Butzen built this 426 hemi powered Cobra and modified the miniature car to be operated by radio control.

5-Cylinder Diesel Radial Engine

5-Cylinder Diesel Radial Engine

Craftsman: Ronald Valentine

Knapp Collection #: 253

Catalog #: 2011.27.8

Contributor: Paul Knapp

This is perhaps the smallest Diesel radial engine in the world with a bore of only 5mm and a stroke of 5mm; total displacement of .49ccm.

Showing 20 of 391 exhibits.

Presented by The Joe Martin Foundation for Exceptional Craftsmanship