CEDRIC LYNCH and his DISC ARMATURE MOTORS

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Many years ago while attending a Battery Vehicle Society (BVS) event, our project manager, Nelson Kruschandl, met Cedric Lynch and Geoff Harding (famous for his electrically propelled human torpedo operations during the 2nd World War) and got a chance to talk batteries and see the electric cycle on which Cedric travelled from London to Birmingham on one battery, without stopping to re-charge. 

Some years later in 1996 Nelson again met up with Cedric when a company called Refuelable Electric Vehicles was formed to develop Nelson's patent battery exchange system for road going cars, and they needed to consult an expert about motors.  

The Lynch Motor - To Buy Online (click picture)

Cedric built his first motor to enter a competition to see who could go furthest on one battery charge in a boat.  The story goes he cut up old baked bean cans to fabricate the interleaves of his armature.  The motor produced was mated to an outboard motor shaft and his boat covered many more laps than any other boat that day.  Soon after this Richard Fletcher as London Innovation invested in Cedric's designs and later Powergen also invested in Cedric's idea, helping to finance the production of his motor.

TECHNICAL DESCRIPTION:

The Lynch motor is an unconventional design with a disc armature. It marries the advantages of a conventional, wound armature motor with the benefits of a flat (printed circuit) motor. It is similar to a pancake motor, but is more powerful than any of these technologies. The disc armature has magnets on both sides, doubling the available flux density and shortening the magnetic path. It therefore packs more power per pound and per cubic inch than any other motor technology. Of course such a revolutionary motor is not for every application - it is not as cheap as wound field motors, but for many applications it is a far superior motor.  It has a previously unheard of power to weight ratio and also power to volume ratio. It is also highly efficient because of the double magnet design and associated short magnetic path. It also includes integral fan cooling.

The Lynch motor is an important development which spurred other motor designers to improve their products to remain competitive, such as synchronus permanent magnet machines.  As a result of the competition between manufacturers the cost of high performance motors and controllers has fallen dramatically.  We hope the cost of solar cells also reduces to allow renewable transportation to develop as a viable alternative to carbon fuels.

Although originally designed by Cedric Lynch, virtually identical motors are now manufactured by two separate UK companies. A variant design is also being manufactured in Germany:-

Contact: Cedric Lynch   

LYNCH MOTOR COMPANY

Phone: +32 2 648 3725    Fax: +32 2 646 7846

Lynch Motor Co is the original management company: their motor is now made in Wales.
Contact Lynch Motor Co.

SCHILLER GROUP

Helmut Schiller claims to have designed an improved motor.
Phone: 0049 6251 63213    Fax: 0049 6251 63213
Contact: Helmut Schiller

List of applications and achievements of the Lynch motor - includes many pictures of boats, cars, bikes and other vehicles.

Golf Car conversions for National Trust       Go karting and the Lynch motor    

4QD-300-48 controller suitable for Lynch

The information on this page and site about Cedric's motor is supplied in good faith.  We have no connection with any of the manufacturers concerned other than as stated, hence cannot supply information about the motor or its applications. Please contact the manufacturer direct.

4QD's home page of motor speed controllers for battery operated motors     4QD's FAQ sheet on battery motors and controllers