Supercharged V8 Racing Engine

Supercharged V8 Racing Engine

Craftsman: James Weber

Knapp Collection #: 168

Catalog #: 2008.16.25

Contributor: Paul Knapp

Closely resembling the Chrysler 300 Hemi, this 1/3 scale model has a 1-inch bore and .900-inch stroke for a total displacement of 5.65 cubic inches.

TechnoPower 5-Cylinder Radial Prototype Engine

TechnoPower 5-Cylinder Radial Prototype Engine

Craftsman: Wally Warner 

Knapp Collection #: 184 

Catalog #: 2009.9.26

Contributor: Paul Knapp 

This prototype marked the beginning of a new line of 1/4 scale engines to power large model aircraft. The engine is about 13″ in diameter with a bore of 1.100″ and a stroke of 1.00″.

Technopower 7-Cylinder Radial Airplane Engine

Technopower 7-Cylinder Radial Airplane Engine

Craftsman: Technopower Engines

Knapp Collection #: 170

Catalog #: 2011.27.13

Contributor: Paul Knapp 

This Technopower 7-cylinder radial engine (SN B7-151) is 7″-long, 8″-wide, 7″-high, and weighs 2 lbs. 8 oz.

Thompson Designs Flat Four Model Airplane Engine

Thompson Designs Flat Four Model Airplane Engine

Craftsman: John V. Thompson

Knapp Collection #: 147

Catalog #: 2008.10.45

Contributor: Paul Knapp

John Thompson used the cylinder assemblies from Honda weed-eater engines to produce this flat four aero engine. His custom crankcase holds the oil for lubrication and the engine runs gasoline with spark ignition.

Three Hirtenberger Patronen VT21 Engines

Three Hirtenberger Patronen VT21 Engines

Craftsman: Hirtenberger Patronen

Knapp Collection #: 396, 397, 398

Catalog #: 2016.8.6

Contributor: Paul Knapp

Three VT21 engines developed by Hirtenberger Patronen, Austria, are shown on a wooden display base. The prototype on the left was manually machined from aluminum and steel bar stock.

Three Morton M1 Model Airplane Engines

Three Morton M1 Model Airplane Engines

Craftsman: Dennis Fadden, Bruce Satra

Knapp Collection #: 415, 87, 413

Catalog #: 2016.8.11a ; 2016.8.11b ; 2016.8.11c

Contributor: Paul Knapp

Three Morton M1 engines sit on a wooden display stand. Mr. Fadden designed several model engines that used Bruce Satra’s Morton castings.

Titan Twin Engine

Titan Twin Engine

Craftsman: Ramon Hoagland

Knapp Collection #: 739

Catalog #: 2023.2.5

Contributor: Paul Knapp

This Titan Twin engine is 16″-long, 11″-wide, 8.5″-high, and weighs about 15 lbs.

TMN 4-Cycle, Sleeve-Valve Cutaway Engine

TMN 4-Cycle, Sleeve-Valve Cutaway Engine

Craftsman: Petr Chvatal

Knapp Collection #: 251

Catalog #: 2011.27.29

Contributor: Paul Knapp

The TMN 4-cycle, sleeve-valve cutaway airplane engine was built by Petr Chvatal. After completing only 10 engines, Petr produced a couple of the cutaways to demonstrate its operation.

Trimble Prototype Single-Cylinder Engine

Trimble Prototype Single-Cylinder Engine

Craftsman: George Trimble

Knapp Collection #: 157

Catalog #: 2009.9.25

Contributor: Paul Knapp 

George Trimble made his first engine in 1958. It’s an air-cooled, four-cycle single that burns gasoline on spark ignition.

Triscamp Engine 

Triscamp Engine 

Craftsman: Robert and Frances Washburn

Knapp Collection #: 713

Catalog #: 2022.8.9

Contributor: Paul Knapp

Robert Washburn designed and fabricated eight of these miniature 3-cylinder, 2-cycle, methanol-burning Triscamp radial engines.

U-22 Turbojet Model Aircraft Engine

U-22 Turbojet Model Aircraft Engine

Craftsman: Dennis Fadden

Knapp Collection #: 58

Catalog #: 2009.9.06

Contributor: Paul Knapp 

Dennis Fadden built this model jet engine from plans that were most likely from the 1950s.

V-4 Stirling Cycle Engine

V-4 Stirling Cycle Engine

Craftsman: Alphonse C. Vassallo

Knapp Collection #: 233

Catalog #: 2009.9.38

Contributor: Paul Knapp 

Among the numerous Stirling cycle engines that Al Vassallo designed and built is this large V-4 workhorse that he attached to a small generator and water pump.

V12 Air-Cooled OHV Model Boat Engine

V12 Air-Cooled OHV Model Boat Engine

Craftsman: Unknown

Knapp Collection #: 177

Catalog #: 2008.10.51

Contributor: Paul Knapp

This 60-degree, overhead valve V-12 engine was machined from billet aluminum (bar stock) with cast iron lined cylinders.

Valentine “Blitz” 1-Cylinder Diesel Engine

Valentine “Blitz” 1-Cylinder Diesel Engine

Craftsman: Ron Valentine

Knapp Collection #: 115

Catalog #: 2008.10.33

Contributor: Paul Knapp

The Valentine “Blitz” Diesel engine was designed and built by Ron Valentine. Mr. Valentine’s engines are among the smallest in the world.

Valentine “Rasant” 1-Cylinder Diesel Engine

Valentine “Rasant” 1-Cylinder Diesel Engine

Craftsman: Ron Valentine

Knapp Collection #: 116

Catalog #: 2008.10.34

Contributor: Paul Knapp

The Valentine “Rasant” Diesel engine is among the smallest in the world. The 2-cycle engine burns a special Diesel fuel that is less viscous and produces combustion when head and pressure are applied.

Valentine Mini Single Engine

Valentine Mini Single Engine

Craftsman: Ronald Valentine

Knapp Collection #: 245

Catalog #: 2011.32.3

Contributor: Paul Knapp 

The Valentine mini single-cylinder model airplane engine runs on methanol with glow ignition using custom made glow plugs.

Vega .61 4-Cycle, Side-Valve Model Airplane Engine

Vega .61 4-Cycle, Side-Valve Model Airplane Engine

Craftsman: John Harbone

Knapp Collection #: 249

Catalog #: 2011.27.27

Contributor: Paul Knapp 

The Vega .61 4-cycle, side-valve model airplane engine was built by John Harbone The engine was machined in small quantities from aluminum and steel bar stock

Showing 20 of 375 exhibits.

Presented by The Joe Martin Foundation for Exceptional Craftsmanship