During my apprenticeship in the early 1970’s I was told that there was ‘nothing you can do’ to repair a speedometer, that piqued my interest and of course I had to take it apart just to see what was inside! That was well over 40 years ago and I have been repairing speedometers for many years.
I am a professional clockmaker and proprietor of Fine Antique Clocks. I have a lifelong interest in classic cars and light goods vehicles. I have a 1951 Series One 80 inch Landrover. I am well positioned to carry out rebuilds and repairs to most speedometers fitted to classic cars.
In the last couple of months I have repaired and serviced Smiths Speedometers for; a 1928 Lagonda, Various marks of Alvis, Post war Bristols, AC, MG’s Jaguar and Landrovers. I also have worked on speedometers made by Dodge Bros, for a 1924 Dodge truck. A 1930 Stanley steam car and 1918 Morgan three wheeler have speedometers made by Cooper Stewart, while these are of different pattern to the Smiths I have been able to re-furbish the speedometers and return them to clients. I have also repaired the 1940-onwards classic Jeep speedos. These due to their construction are challenging to work on, but with care can be returned to a working state.
I have a very well equipped workshop with CNC machining facilities. I can also repair Tractormeters, fitted to classic agricultural tractors. Some classic rev counters are also based on the NEMAG principle and I can repair those as well.
Researching the technicalities of Speedometers for various articles and this web site I was surprised by the lack of material in the public domain. I have published this web site to help others take apart repair and return to service their speedometer. Of course I am also offering to repair speedometers for people who do not relish the prospect of tiny screws and hair springs being lost on the kitchen floor.
I would be very interested to receive any other information on the Smiths Mechanical Governor Speedometers, the Smith /Jaeger NEMAG speedometers or related instruments Rev counters or Tractormeters. I am also interested in information, publicity material and other ephemera not just for the Smiths family of Speedometers, but also Speedometers made by other manufacturers, such as Cooper Stewart, Allis Chalmers, Dodge Bros, Northwest,
I am a Freeman of the Worshipful Company of Clockmakers, a Fellow of the British Horological Institute, and an approved Institute of Conservation, Accredited Conservator-Restorer. I hold the West Dean College Diploma in the Conservation and Repair of Antique Clocks and The University of Sussex Post Graduate Diploma in Conservation. I also holds the City and Guilds of London Institute Full Technological Certificate.
The copy of the Smiths publicity material (1) is reproduced from a 1950’s motoring magazine.
The copy of the Mk 3 Nemag drawings (2) are from a Smiths instrument service manual.
Dr Mike Flannery