Herkimer Tool & Model Works OK Engines
July 1961 American Modeler

July 1961 American Modeler Table of Contents These pages from vintage modeling magazines like Flying Aces, Air Trails, American Modeler, American Aircraft Modeler, Young Men, Flying Models, Model Airplane News, R/C Modeler, captured the era. All copyrights acknowledged.

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Herkimer Tool & Model Works OK Engines

Safe ... Simple ... Sensational!

OK's Instant Start CO₂ Engine

Only $5.95 with holder

a flip of the prop and away she goes!

Piston-Prop Powerplant without Battery, Plug or Fuel!

Get the thrill of championship performance on your very first flight. OK's sensational CO₂ engine makes it that sure, that simple. No fine adjustments to make ... no fuel to pour or spill ... no batteries or plugs to check. Just flip the prop and the CO₂ leaps into instant action ... powered by harmless compressed gas from an easily installed CO₂ cartridge.

Assures fairer tests of plane designs in contests and races, starting everyone with equal power. Gives up to a full minute of powered flight in models weighing up to 5 ounces without engine or accessories. Easy to install and use, the CO₂ is made to the same high standards as famous OK Cubs. Details and information on full-view package at your favorite hobby shop.

and See These Hot new OK Engine-Powered Jobs, too ...

OK Cub .049B

An OK Cub Enginer for Every Model, Power and Need -

From .024 to .35

priced from $3.95 to $12.95

OK Cadet Trainer

First step to powered flight in assembled and ready-to-fly model. High-impact plastic, with OK Cub engine and control. Now at beginner's price of only $5.98.

OK Cub-Kart

Realistic scale model for racing fun in garage or basement. OK Cub engine, all-metal chassis, neoprene tires, helmeted driver. Now at introductory price of

$8.95

At Leading Hobby Shops Everywhere

Write for Free Illustrated Catalog Showing the Complete OK Line

Herkimer Tool & Model Works

78 Harter Street, Herkimer, N.Y.

Articles About Engines and Motors for Model Airplanes, Boats, and Cars:

• AT's Post-War Motor Roundup - September 1949 Air Trails
• Motor of the Month: K&B Torpedo .049 Engine - November 1952 Air Trails
• Mills "Brothers" - ½   Diesel Engines from England - January 1952 Air Trails
• World's Smallest Mass-Produced Glow Plug Engine Unveiled by Cox - May 1961 American Modeler
• Cameron .09 Marine Engine - July 1954 Air Trails
• Electromotive Power Plants - March 1974 American Aircraft Modeler
• Netzeband Reports on the Aero 35 Horizontal Piston Engine - October 1963 American Modeler
• Wankel Engine Models - July-August 1963 American Modeler
• Multi-Cylinder Engines - March 1967 American Modeler
• Air Progress: The Jet Engine - July 1951 Air Trails
• 50-HT Hopped-Up Jetex - March-April 1963 American Modeler
• Allyn .049 Sky Fury Engine Review - May 1954 Model Airplane News
• CO2 Power is Coming Back - April 1969 American Aircraft Modeler
• Cordless Electric Flight Motors - July 1973 American Aircraft Modeler
• Cox Babe Bee .049 Engine - Operation & Troubleshooting Guide
• Babe Bee: New Member of the Cox Family - April 1957 American Modeler
• Cox Golden Bee .049 Engine - Photo of disassembled engine
• Cox Thimble Drone PeeWee .020 Engine - Engine photo & operation sheet
• Junior 451 / DP-03 CO2 Model Airplane Motor - Photos, user's guide, and video of it running
• Designing a Ducted Fan - February 1971 American Aircraft Modeler
• Ducted Fans!  --  Scale-Like R/C Planes - March 1962 American Modeler
• Dyna-Jet Engine - June 1957 American Modeler
• Engine Idling Secrets (Part 1) | (Part 2)

      November & December 1962 American Modeler

• Engine Roundup - 1955 Air Trails Annual Edition
• Eureka Importing Company "Tiger Jet" Ad - July 1957 American Modeler
• Fox 15 C/L Engine - Photo of my 1st engine bigger than a Cox .049
• Fox 35 C/L Stunt Engine - Photo of my next C/L engine,
• Fox 40 R/C Advertisement - April 1962 American Modeler
• Gentlemen, Start Your Engines! - August 1969 American Aircraft Modeler
• Global Engine Review - 1963 Annual Edition American Modeler
• Hot Engines! - January/February 1963 American Modeler Article
• How Bill Wisniewski Reworks His Engines - June 1957 American Modeler
• How to Select the Proper Glow Plug ... and Why - 1963 Annual Edition American Modeler
• Inside the Two-Cycle Engine - February 1968 American Aircraft Modeler
• Iron Curtain Engines - Da? Nyet? - August 1962 American Modeler
• Jetex Jet Engine Ad - May 1954 Model Airplane News
• Jetex Motors & Fuel Pellets - Photos of my collection of motors
• Johnson Engines Continue on Improvement Program - February 1957 American Modeler
• Powerplant Revue: Hi's Radio Mill Proves Potent Yet Docile .35 - February 1962 American Modeler
• McCoy .35 Red Head C/L Engine - Photos of my engine and the user's sheet
• Model Motor Museums (Part 1) | (Part 2)

      November & December 1959 American Modeler

• Netzeband Reports on a Horizontal Piston Engine

       September/October 1963 American Modeler

• Norvell .15BB Revlite C/L Engine - Photos of my engine
• O.S. 25 LA Engine - Photos of my engine
• Outboard Model Boat Motors - Advertisements of many different outboards
• Rubber Motor Testing - August 1968 American Aircraft Modeler
• There's a Wankel in Your Future - June 1968 American Aircraft Modeler
• Thimble-Drome Piper Super Cub 105 - October 1957 American Modeler
• The Visible Wasp Airplane and V-8 Automobile Engines - Advertisements
• The Wright Cyclone 9 Radial Aircraft Engine - by Monogram

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