Wall F Head Inline 4-Cylinder Engine
Craftsman: Dick Pretel
Knapp Collection #: 592
Catalog #: 2019.11.5
Contributor: Paul Knapp
This highly modified Wall F Head inline 4-cylinder sports a side-valve exhaust and an overhead valve intake system.
Wall OHV Inline 4-Cylinder Engine
Craftsman: Dick Pretel
Knapp Collection #: 590
Catalog #: 2019.11.3
Contributor: Paul Knapp
This Wall OHV inline 4-cylinder engine was made by Dick Pretel. All of the components, other than the crankcase, were machined from 7075 aluminum, steel, stainless steel, and thermoplastic.
Wall Wizard Opposed Twin Engine
Craftsman: Roger Butzen
Knapp Collection #: 757
Catalog #: 2024.5.4
Contributor: Paul Knapp
Roger Butzen, of Texas, built this Wall Wizard opposed twin engine.
Wall Wizard Water-Cooled 4-Cycle Model Boat Engine
Craftsman: Dick Pretel
Knapp Collection #: 262
Catalog #: 2011.27.34
Contributor: Paul Knapp
Mr. Pretel built this engine from a standard Wall Wizard casting kit, but modified the cylinders for water cooling instead of air.
Wankel (Mazda Type) Rotary Engine
Craftsman: Henry Parohl
Knapp Collection #: 123
Catalog #: 2008.16.19
Contributor: Paul Knapp
This Wankel (Mazda type) rotary engine is a two-cycle that burns gasoline with oil mixed in for lubrication. The engine is 6”-long, 7”-wide, and 6”-high.
Warner Large Scale 5-Cylinder Radial Aircraft Engine
Craftsman: Wally Warner
Knapp Collection #: 214
Catalog #: 2011.27.18
Contributor: Paul Knapp
It took Mr. Warner about two years to produce the molds, the aluminum castings, and to machine all the parts to build this 5-cylinder radial aircraft engine.
Wasp Jr. Single-Cylinder Model Airplane Engine
Craftsman: Bruce Satra
Knapp Collection #: 186
Catalog #: 2008.16.34
Contributor: Paul Knapp
Bruce Satra combined a Wasp Jr. cylinder assembly to a crankcase he machined from billet to produce this single-cylinder Wasp Jr. engine.
Whittle Robin Engine
Craftsman: Eric Whittle
Knapp Collection #: 450
Catalog #: 2016.8.1b
Contributor: Paul Knapp
The “Robin” engine is Eric Whittle’s custom-made award presented to Jim Schiller for his extraordinary effort, recovery, and the successful return of Mr. Whittle’s Cirrus engine.
Wright Whirlwind J5 Model Airplane Engine
Craftsman: Charles “Chuck” Harty
Knapp Collection #: 522
Catalog #: 2017.27.13
Contributor: Paul Knapp
This Wright Whirlwind J5 model airplane engine was designed by Carl-Eric Olsryd and built by Charles Harty. Castings, gears, and bearings were provided by Mr. Olsryd of Sweden.
Zimmerman “Cirrus” 4-Cycle V8 Engine
Craftsman: Profi M.E.
Knapp Collection #: 67
Catalog #: 2008.10.21
Contributor: Paul Knapp
This 1/6 scale Zimmerman “Cirrus” 4-cycle V8 engine was built by Profi M.E., 2001. This engine includes the addition of 4 cylinders and a geared flywheel instead of a propeller hub.
Showing 11 of 391 exhibits.