
Walking Beam Steam Engine
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This walking beam steam engine has an interesting geared pattern on the outside of the flywheel.
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This walking beam steam engine has an interesting geared pattern on the outside of the flywheel.
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.
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.
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.
Craftsman: Joe and Jan Haring
Catalog #: 2013.17.10
Donor: Jan Haring
This small wall clock has had the pendulum replaced by four miniature rooms, one above the other.
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.
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.
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.
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.
Craftsman: Roger Butzen
Knapp Collection #: 757
Catalog #: 2024.5.4
Contributor: Paul Knapp
Roger Butzen, of Texas, built this Wall Wizard opposed twin 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.
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.
Craftsman: Ingersoll Rand
Catalog #: 2012.9.1
Donor: Louis Chenot
This small model demonstrates how a 2-rotor Wankel rotary engine functions.
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.
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.
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
The brass radiator provides efficient convection cooling for this hot-air engine, which runs on the Stirling cycle.
Craftsman: Webra
Catalog #: 2018.39.2
Donor: David Tooley
A Webra 1.x Diesel model airplane engine.
Craftsman: Webra
Catalog #: 2018.39.1
Donor: David Tooley
A Webra 2.5R Diesel model airplane 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.
Craftsman: Jackie Hoefert
Catalog #: 2021.4.16
Contributor: San Diego Miniature Crafters Assn.
This dollhouse miniature built by Jackie Hoefert is entitled, “Wedding Day.”
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