Page 47 – The Miniature Engineering Craftsmanship Museum

Riggle 1/4 Scale Midget Race Car

Craftsman: Jim Riggle

Knapp Collection #: 238

Catalog #: 2011.27.21

Contributor: Paul Knapp

This 1/4 scale Riggle midget race car was designed and built by Jim Riggle. Jim made the patterns and molds for the 4-cylinder, water-cooled, DOHC mono-block engine.

Riggle 4-Cylinder Inline Engine

Craftsman: Jim Riggle

Knapp Collection #: 695

Catalog #: 2022.8.6

Contributor: Paul Knapp

This Riggle 4-cylinder inline engine is 9.5″-long, 7″-wide, 7.5″-inches tall, and is mounted on a running stand that houses all necessary accessories to run and monitor the engine.

Riggle NOVI DOHC 1/4 Scale Sprint Car

Craftsman: Jim Riggle

Knapp Collection #: 300

Catalog #: 2011.32.14

Contributor: Paul Knapp

This 1/4 scale Novi V8 sprint car was designed and built by Jim Riggle, of North Dakota, in the mid-1980s. The model car is 37″-long, 16″-wide, and 12″-high. Jim used this sprint car as the test platform for his new model of the NOVI V8 engine.

Riley Whiting Winchester Wall Clock

Craftsman: Riley Whiting

Catalog #: 2011.11.4

Donor: Joe Kunkler

This weight-driven Winchester wall clock was built by Riley Whiting, and dates back to the 1800s.

Rimfire Spark Plug Prototypes

Craftsman: Paul Knapp

Knapp Collection #: 296

Catalog #: 2011.27.44

Contributor: Paul Knapp

These Rimfire spark plug prototypes were built by Paul Knapp in 1993. The first prototype is the surface-gap plug responsible for the “Rimfire” name and logo.

Ringbom Hot Air Engine

Craftsman: Birk Petersen

Catalog #: 2016.15.61

Donor: Mark Petersen

A miniature Ringbom hot air engine.

Robarts R780 7-Cylinder Radial Engine

Craftsman: Bob Walker

Knapp Collection #: 13

Catalog #: 2011.27.3

Contributor: Paul Knapp

This Robarts R780 7-cylinder radial engine has a bore of 1.125 inches and stroke of 1.125 inches for a total displacement of 7.8 cubic inches.

Robert Stirling’s First Engine

Craftsman: Birk Petersen

Catalog #: 2016.15.35

Donor: Mark Petersen

Birk built this model of Robert Stirling’s first hot air engine. It has a brick façade on the metal housing.

Robert Stirling’s Fourth Engine

Craftsman: Birk Petersen

Catalog #: 2016.15.24

Donor: Mark Petersen

This is a small model of Robert Stirling’s fourth engine.

Robinson Hot Air Engine Model

Craftsman: Birk Petersen

Catalog #: 2016.15.42

Donor: Mark Petersen

Birk’s model of a Robinson hot air engine.

Robot Chest Music Box

Craftsman: Donald Riley

Catalog #: 2021.19.4

Contributor: Donald Riley

This music box, entitled “Robot Chest,” includes a hoard of individual robots along with a ray gun and old-fashioned microphones.

Robotic Arm and Hand

Craftsman: Carl Hammons

Catalog #: 2013.16.1

Donor: Joe Martin

This unique project is a stepper motor-powered experimental robot gripping arm designed by Carl Hammons.

Rock House

Craftsman: George & Judy Burke

Catalog #: 2018.47.5

Donor: Anthonly Burke

This small dollhouse is aptly named Rock House.

Rocking Engine

Craftsman: Birk Petersen

Catalog #: 2016.15.75

Donor: Mark Petersen

Birk Petersen built this miniature electric rocking engine.

Rocking Valve Engine

Craftsman: Theodore Carder

Catalog #: 2021.11.5

Donor: Susi Trumbo

A miniature rocking valve engine built by Theodore Carder.

Rodless Rotary Engine

Craftsman: Peter Grunstra

Catalog #: 2013.42.1

Donor: Peter Grunstra

This 2-cycle rodless rotary engine, suitable for aircraft or autos, is a prototype built by Peter Grunstra.

Root & Vandervoort 2 HP Hit N’ Miss Engine (Full-Size)

Craftsman: Root & Vandervoort; Restored by Bill Fowler

Catalog #: 2011.4.1

Donor: Les Cade

This full-size Root & Vandervoort 2 HP hit n’ miss engine was restored by Bill Fowler, and donated to the museum by Les Cade. The engine can run at 450 rpm, and the serial number is BL1337.