Peerless Steam Traction Engine Model
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This miniature Peerless traction engine was built by Rudy Kouhoupt at a scale of 1-1/4″:1′.
Pegasus R9-2800 Radial Engine
Craftsman: Authentic Scale
Knapp Collection #: 420
Catalog #: 2016.8.15
Contributor: Paul Knapp
The Pegasus R9-2800 radial aircraft engine was made by Authentic Scale, of the US, in 2014. This 1/5-scale engine measures about 11 inches in diameter and resembles the front half of a Pratt & Whitney R2800 Double Wasp radial engine.
Pendulum Wall Clock with Aluminum Gears
Craftsman: Ken Noble
Catalog #: 2010.18.1
Donor: Ken Noble
Each part of this pendulum wall clock was crafted from raw material. The frame is made from clear Plexiglas so the movement can be observed.
Pepe Gyroscopic Governor
Craftsman: Birk Petersen
Catalog #: 2016.15.51
Donor: Mark Petersen
This is a demonstration model of a gyroscopic governor called “Pepe.” The mechanism is hand cranked.
Peruvian “Good Luck” Dollhouse
Craftsman: Unknown Peruvian Craftsman
Catalog #: 2016.21.1
Contributor: Alan and Georgina Chamberlain
This small structure depicts a traditional village scene in Peru–with everything from musicians to street vendors, and even a nativity scene.
Pietenpol Air Camper R/C Model Airplane
Craftsman: Ellsworth Orr
Catalog #: 2019.8.1
Donor: Ellsworth Orr
This radio-controlled Pietenpol Air Camper was built from scratch with the exception of the landing gear wheels which were bought at a store.
Pingstone Tether Boat
Craftsman: Harry A. Pingstone
Knapp Collection #: 485
Catalog #: 2016.44.1
Contributor: Paul Knapp
This Pingstone tether boat measures 12″-wide by 40″-long and is powered by Mr. Pingstone’s custom made 30cc air-cooled overhead cam engine.
Pioneer Non-Compressive Internal Combustion Engine
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This unique project is a Pioneer non-compressive internal combustion engine.
Piper J3 Cub
Craftsman: Ralph Sarosi
Catalog #: 2013.35.8
Donor: Joe Bridi
This wooden model Piper J3 Cub airplane (#NC35714) was originally built between 1937 and 1947.
Piston from 1979 Blue Max AA/Funny Car
Craftsman: Venolia
Catalog #: 2014.36.1
Contributor: Craig Libuse
This interesting piston came from the Blue Max AA/Funny Car record run. The time of the record run was 6.02 seconds.
Playhouse Dollhouse
Craftsman: Peggy Boggeln
Catalog #: 2017.24.16
Contributor: San Diego Miniature Crafters Assn.
This 1/4”-scale playhouse was built by Peggy Boggeln during a class at a NAME National Convention.
Plunket Atmospheric Gas Engine
Craftsman: Roger Butzen
Knapp Collection #: 756
Catalog #: 2024.5.3
Contributor: Paul Knapp
This Plunket atmospheric gas engine was built by Roger Butzen of Texas.
PM Model Steam Engine
Craftsman: Roger Butzen
Knapp Collection #: 762
Catalog #: 2024.5.8
Contributor: Paul Knapp
Roger Butzen, of Texas, built this PM model steam engine in 1996.
Pneumatic Jackhammer
Craftsman: Birk Petersen
Catalog #: 2016.15.22
Donor: Mark Petersen
This miniature pneumatic jackhammer is displayed in a piece of burl wood.
Polished Copper Oil Can
Craftsman: Phillip Duclos
Catalog #: 2013.50.11
Donor: George and Dorlene Root
The beautiful simplicity and fine finish on this small oil can is a great illustration of Phil Duclos’ metalworking skill.
Popcorn Machine Type Steam Engine
Craftsman: Unknown
Catalog #: 2021.8.1
Donor: Karen Maxwell
This is an interesting popcorn machine type steam engine. Unfortunately, the builder of this small steam engine is unknown.
Powerhouse Stationary Engine
Craftsman: Michael Gombert
Knapp Collection #: 530
Catalog #: 2017.27.5
Contributor: Paul Knapp
This Powerhouse stationary engine was designed by Jerry Howell and built by Michael Gombert. Mr. Howell provided the plans and Mike machined it from aluminum and steel bar stock.
Prairie Type 2-6-2 Steam Locomotive
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This model locomotive was scratch-built without castings at a scale of 3/8”:1’.
Pratt & Whitney 28-Cylinder 4-Row Radial Engine
Craftsman: Dennis Fadden
Knapp Collection #: 344
Catalog #: 2012.33.17
Contributor: Paul Knapp
This Pratt & Whitney 28-cylinder 4-row radial engine is 17”-long, 17”-wide, and 17”-high. It was designed to operate on gasoline and spark ignition, and sports a 12-inch, 3-blade adjustable pitch propeller.
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