Authentic electric engine kits

OMC-7 “Eddy the Engine” Model Kit

From: £89.00

An educational model kit and working model of an Edwardian electric engine

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OMC-7 "Eddy the Engine" Model Kit

An educational model kit and working model of an Edwardian electric engine


Knife Switch Kit – optional

Our period styled on/off switch. Includes a 3mm drill bit and fully illustrated assembly instructions.

Extra Spares Pack – optional

The easily mislaid parts. One pack is already included with each model kit. Contains approxiamtely, 3 x 2059 E Clips, 7 x 8BA washers, 4 x 8BA Nuts, 2 x 10BA Steel 1/8 Machine Screws, 2 x 2071 spacers, 1 x 1922 8BA 1/4 Machine Screw.

8BA Box Spanner – optional

A very useful tool for assembling this model kit.

Drill Bit Set – optional

1 x 1.5mm and 1 x 2.5mm.

All Hardwood Base to replace black plastic base. – optional

SKU: OMC-07-Bundle Category:

A modern version of the “Educational Engines” of yesteryear


“Eddy the Engine” is an ideal and safe introduction to the world of electromagnetic engines and to that of model making. It is designed to show many of the operating principles of early electric motors. As the model kit is assembled the motor’s functions will be brought to life providing a satisfying experience for the inquiring mind.
products_gallery_omc07_01There are approximately 100 parts to be assembled and this can be done with ordinary hand tools. There is no machining or soldering required, so this makes it an ideal kit for model makers of all abilities.


It’s all about the timing


Building “Eddy the Engine” into an operational motor is all about the timing. The timing is controlled by a cam and timing blades. Four timing adjustments have to be made, highlighting the  interaction between the armatures and the coil and that of the cam position.


The contact points are mounted on an adjustable bracket making it possible to minimize mechanical resistance at the cam. Further fine tuning is possible with the timing plate screw that establishes how long the timing blades are in contact.


2015-05-17-08.43The challenge lies in getting the timing right and this is all part of the fun. The anticipation and end result of a functioning motor is both enjoyable and rewarding, leaving the builder with a sense of achievement on completion.


Very detailed and illustrated assembly instructions are provided with the kit. All the parts come in numbered packs which correspond to numbered sections in these instructions, making the building process as simple and easy to understand as possible. A useful BA spanner tool is also included to assist with building, as is a spares pack of the most often “mislaid” components.


2015-05-17-08.55The engine has a single coil with magnetic focusing arms that interact with six armatures that are incorporated into a rotor.


A cam operated switching system ensures that the coil rod is energized as an armature approaches and switches off as it passes.


OMC-2&3-Series-Two-004Eddy the Engine” operates on safe 6 volts dc and the batteries are mounted under the hardwood base together with the terminal block and diode that prevents sparking at the timing blades.


2015-03-17-11.29A modern “on/off” switch is fitted to keep costs down but a period “Knife Switch” is  offered as an alternative at extra cost.


This model is produced from high quality brass, silver steel and zinc coated magnet steel with a copper winding on an iron core. It is mounted onto a period styled ebony black plastic base surround with a hardwood base top that has to be drilled (template provided) and then polished or varnished.


The timing blades are of nickel silver with  silver nickel contact points for long trouble free operation.

Technical Specification


This kit contains approximately 100 parts that need to be assembled. These parts are supplied in numbered packets that correspond to numbers in the detailed and illustrated assembly instructions.


No machining or soldering is necessary. Only hand tools are required. A BA spanner tool is included.
The three piece base has an ebony black plastic surround and a hardwood base top that will need drilling (template provided) and polishing or varnishing.


The base measures 135 by 135mm (5,1/4”) and the hardwood base top is 100 by 100mm ( 4” by 4”) approximately.


The finished model stands approximately 115mm (4,1/2”) high and the rotor has a diameter of 60mm (2,3/8”)


The model operates on 6 Volts dc and incorporates a battery box that accepts 4 AA batteries (not included).


A modern on/off switch is provided but a period Knife Switch is available at extra cost.


A spares pack of the most often “mislaid” parts is included.


The Old Model Company Limited reserves the right to change the specification without notice at any time.


This Model Kit is Not A Toy and is designed to be assembled by adults and responsible young people who are competent in the use of ordinary hand tools. The drilling of the wooden base should only be carried out by persons skilled in the use of a wood drill.