Wall “Wizard” 2-Cylinder Opposed Engine
Craftsman: Elmer A. Wall
Knapp Collection #: 66
Catalog #: 2008.10.20
Contributor: Paul Knapp
Elmer A. Wall designed this 45 cc air cooled 4-cycle engine with overhead valves.
Wall 4-Cylinder 50cc Water-Cooled Engine Kit (Unassembled)
Craftsman: Tim Mundt
Catalog #: 2024.4.1
Donor: Tim Mundt
An unassembled casting kit for an Elmer Wall 4-cylinder water-cooled gas engine kit.
Wall 4-Cylinder Water-Cooled Engine
Craftsman: Russell Anderson
Catalog #: 2019.21.11
Contributor: Steve Anderson
Several engines built by Russell Anderson, including this Well 4-cylinder 50cc water-cooled engine, are on display in the Miniature Engineering Craftsmanship Museum.
Wall Duplex Mariner
Craftsman: Elmer A. Wall
Knapp Collection #: 79
Catalog #: 2008.16.13
Contributor: Paul Knapp
This Duplex Mariner engine, circa 1940-41, is 9”-long, 6”-wide, and 8”-high.
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 Engine Casting Kit
Craftsman: Elmer Wall
Catalog #: 2011.29.1
Donor: Fred Zimmerman
An unfinished casting kit for a Wall Wizard engine, which was designed and produced by Elmer Wall.
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.
Webra Speed .91 RC Engine
Craftsman: Webra Modellbau GMBH
Donor: Joe Martin
This Webra Speed .91 RC engine has had very limited use. The P5 version of the engine is still in production.
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.
YS .61 4-Cycle Engine
Craftsman: YS
Catalog #: 2012.19.11
Donor: Joe Bridi
This YS .61 4-cycle engine was probably made for a model boat with a long drive shaft. It was made in Japan.
YS 91SR Model Airplane Engine
Craftsman: YS
Catalog #: 2014.19.2
Donor: Joe Bridi
This YS 91SR model airplane engine was manufactured in Japan.
YS DZ140 Model Airplane Engine
Craftsman: YS
Catalog #: 2014.19.3
Donor: Joe Bridi
This YS DZ140 model airplane engine was manufactured in Japan.
YS FZ53 Model Airplane Engine
Craftsman: YS
Catalog #: 2014.19.1
Donor: Joe Bridi
This YS FZ53 Power Wing model airplane engine was manufactured in Japan.
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.
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