Background
Ralt as a company will need no introduction and the Ralt RT3, of which the RT30 was a development, was a highly successful Formula 3 car in its time and one that dominated both British and European championship races between 1979 and 1984.
Designed by Ron Tauranac - the man responsible for the Formula 1 winning Brabhams of the 1960’s - to replace the Ralt RT1, the RT3 was equipped with ground-effect aerodynamics plus a very narrow monocoque formed of aluminium with a honeycomb internal structure.
The latter feature made it very stiff and light, a trait so highly prized that it ensured that the RT3 quickly became the weapon of choice for some of the greatest drivers of all time to hone their skills in, including Ayrton Senna who won the 1983 British Formula 3 Championship in one.
The Ralt RT30 was introduced in 1985 to take advantage of the then-new ‘flat-bottom’ rules. Notable, amongst other things, for being asymmetric, it had only the one radiator inside one of the sidepods, the other sidepod being a deformable panel that was lower than its more functional mate, a design quirk made to take advantage of a loophole in the regulations.
The RT30’s ‘Coke-bottle’ shape helped give extra downforce and is said to have been based on that of the McLaren F1 car of the period, which isn’t surprising as both firms were based in the same town at the time…
Other developments over the earlier car include tubular steel wishbones, with pullrod-operated dampers, front and rear, longitudinally mounted rear dampers, an extra 4” in the length of the chassis, and a tubular A-frame at the rear to mount the engine.
The RT30’s flat floor was made of varnished plywood - and why not? After all, plywood is light and cheap, two traits it shares with the finished car.
The RT30 won the British Championship in 1985, and came in in third place in the French Championship of the same year.
The subject of continuous development over the following seasons, the RT31 replaced it in 1987. March bought out the Woking-based company in 1988, retaining Ron Tauranac as a consultant.
As a constructor, Ron developed a reputation for building safe, simple, and strong cars that were manufactured to very high standards, something that holds true even today, making them ideal for the privateer on a tight budget.







