Home Page for Tethered Car Racing
The racing of tethered cars began in
the late 1930s growing in popularity throughout the 40s and 50s in both
Eastern and Western Europe, the US and Australasia.
The concept of the sport is simple and has remained
unchanged since its inception. Initially the models resembled full sized
cars but over the years they have developed and become refined into
extremely fast, streamlined vehicles. The car is connected to a rotating
pylon via a steel cable of varying dimension depending on the class of car.
The cars are pushed off and horsed up to speed, a process that has remained
unchanged for seventy years. When the competitor is satisfied with the speed
of the car being indicated the timing begins for the number of laps that
equates to 500metres following which the fuel is turned off by means of a
trip lever on the car. Caps, rags and mats sufficed at one time but now it
is a precisely adjusted mop. As with the hydroplanes it is the search for
ultimate speed that drives the competitors on.
|Class IV cars being prepared||Janis and Laurin Meier hard at work||Mats Bohlin hand built cars and engines|
|Steve Turley pushes off, Oliver Monk assists||Manu Finn horsing||Speed readout, timing button, stopping device|
British enthusiasts have two styles of racing that can be pursued, modern FEMA style cars or retro and vintage models. OTW has a series of articles detailing the histories of International and British tethered car racing and the organisations that have been responsible over the years.
Background and historical
|Tethered Car Racing 1937 to the present||Brief History of the sport in the UK|
|A detailed history by David Giles||OTW article|
There are two bodies governing tethered car racing. FEMA (Federation Europeenne Du Modelisme Automobile) founded in 1952 and WMCR (World organisation for Model Car Racing) founded in 1978. Each organisation has its own rules that are broadly similar although there are hopes that these might be unified in due course.
|Speedmodelcar website for all current material on racing in Europe along with rules, calendars, results and links.|
|FEMA website listing of all tethered cars currently registered|
Clubs, Associations and contacts within the UK
|British Tethered Car Association||Retro Racing Club||British Tethered Car Racing Club|
|National organisation from 1978||Track days and magazines||Umbrella organisation|
Principle Events 2018
|3rd March Leicestershire GB||Car Registration and Inspection||3rd-5th Aug Hannover Ger||FEMA European Championships|
|19th 20th May Kapfenhardt Ger||FEMA GS Rnd 1||8th 9th Sept Pila Pl||FEMA GP Round 5|
|26th 27th May Tallinn Est||FEMA GS Rnd 2||22nd 23rd Sept Basel Ch||FEMA GS final|
|23rd 24th June St Petersburg Rus||FEMA GS Rnd 3||17/18th Nov Kapfenhardt Ger||Lucia Race|
|Class||Engine capacity||Weight||Bridle Colour||Bridle Thickness||Cable|
|Class 1||0.01cc - 1.5cc||1.050kg||White||2-3.5mm||0.9mm|
|Class 2||1.51cc - 2.5cc||1.570kg||Green||2-3.5mm||1.2mm|
|Class 3||2.51cc - 3.5cc||2.0kg||Yellow||2.5-4.5mm||1.4mm|
|Class 3b||2.51cc - 3.5cc||2.0kg||Yellow||2.5-4.5mm||1.4mm|
|Class 4||3.51cc - 5cc||2.30kg||Red||2.5-4.5mm||1.6mm|
|Class 5||5.1cc - 10cc||3.130kg||Black||4-4.5mm||2.0mm|
|Class 1||Jan-Erik Falk Sw||268.697kph Dec 2006||Aaron Monk||244.451kph Aug 2016|
|Class 2||Torbjorn Johannessen Nor||285.711kph Aug 2016||Oliver Monk New||262.711kph Aug 2018|
|Class 3||Andriy Yakymiv Ukr||300.953kph Mar 2017||Oliver Monk||274.683kph April 2015|
|Class 3b||Mart Sepp Est||273.562kph Aug 2015||David Giles||241.285kph June 2010|
|Class 4||Tonu Sepp Est||317.124kph Apr 2014||Steve Turley||289.829kph Sept 2012|
|Class 5||Gualtiero Picco It||344.959kph Mar 2009||Oliver Monk||322.465kph May 2012|
Related articles on building, running and maintaining tethered cars
Mark Osborne describes the building of a car from proprietary components
David Giles Describes his E3 tethered car machined and built from scratch
describes this essential
Oliver Monk describes projects, engineering techniques and car preparation
|2013 2014 2015 2016 2017||
Printed material relating to tethered cars
Routes to running a modern tethered car
Tethered car racing like almost every other speed based modelling discipline that seeks to achieve ultimate performance requires dedication, persistence, knowledge and expertise, relying on a hard core of interested members and competitors. To this end, Oliver Monk who competes in all classes except 3b and Class 4 regularly publishes his ‘Workshop Ramblings’ on OTW detailing the development of his current cars, the rebuilding of older models and several new builds, both for the FEMA classes and retro events. He also has an in depth knowledge of the close knit group of those who can supply everything from complete cars down to individual spares, a necessity for anyone wishing to compete.
The car is the essential piece of hardware, and for those interested there are a number of routes available to become the owner of a modern FEMA car and, hopefully, competing. The first step being to contact the national authority. For the UK this will be the new umbrella organisation the BTCRC.
From there on there is the option of purchasing a second hand car by visiting meetings or perusing the speedmodelcar site that often has complete cars for sale, including recently some exceedingly successful examples.
|Sepp 3.5cc car||Russian 1.5cc car|
Buying a new competition car (or commissioning one) is somewhat more difficult as the options here are more limited and making contact with a builder can require a bit of persistence and a good translator.
Right: 3.5cc car supplied complete by Jozef Fonad
There now exists the possibility to purchase the major components required and with a modicum of engineering, assemble a car yourself. Not as daunting though as building a car from scratch, which is another option for those with the facilities and expertise.
|Cast pans from Gabor Dobrocsi||CNC pan from Linas Adomavicius||Parts for a 10cc Denneler car|
David Giles has been the most successful British competitor of the modern era being the only Briton since 1956 to become a European Champion. After a lengthy period of retirement from active competition, a trip to a meeting at the Basel track rekindled his interest and he took the decision to design, build and develop his own 3.5cc car (originally Class 5). The car proved to be a consistent front-runner in competitions and achieved 4th place in the 2005 European championships.
David continued with development of his cars introducing an entirely new concept in design, utilising an upper beam chassis milled from a solid bar of 7075 T6 aircraft alloy, the inspiration for which was a picture of an early rail racing car designed by Arthur Weaver. The principal reason for choosing this layout was to improve the airflow characteristics under the car.
similar concept has been developed by Mart Sepp, but using a lower beam
chassis made from mild steel.
David very kindly provided an account of the development of his car in the article DJR3 and the innovative Papagai.
Mark Osborne, an Australian we met in Basel in 2013 provided OTW with a very helpful and illuminating article that described in detail, with relevant costing, a project to build a number of new Class 5 10cc cars, starting with CNC machined pans.
For anyone interested in international competition, the latest edition of the rules (both FEMA and WMCR) are available on the website www.speedmodelcar.com.
Registration of a car is initiated by contacting the BTCRC for the allocation of a racing number – "GBxxx" – and by submission of a ‘Daten Erfassungsblatt’ (specification data sheet) that is filled in and submitted to the FEMA Technical Secretary by the BTCRC Technical Secretary after he has inspected and scrutineered the car to ensure that it has satisfied the technical specification and design criteria for the relevant class. The car then receives a registration number, which has to be engraved on the bottom pan, and a racing licence. It is the intention that all car and driver registrations will eventually be held online.
There is no subscription to either the BTCA or BTCRC, but there is an annual fee per driver of 10 Euro and an annual national fee of 100 Euro, to be paid to the FEMA treasurer around the start of the racing season. The national fee is simply divided by the number of active drivers, collected by the FEMA point of contact and passed directly to the FEMA secretary.
|Class 1: Hugh Blowers' 1.5cc ex British record holder||Class 3: Chris Kennedy 3.5cc Sepp car|
|Class 2: Gabor Dobrocsi||Class 3b: Mart Sepp's 3.5cc record holder|
|Class 4: Steve Turley's 5cc Stelling car||Class 5: Gilbert Huguenin's 10cc Picco car|
|Class 5: Internals 10cc series 8 Picco motor||Class1: Current British record holder 1.5cc Kapusikov motor|