Quantum Sports Cars

This approach relied upon the use of computer analysis to ensure that structural rigidity would not be compromised, offering the strength of a steel chassis but without the weight penalty.

[1] The first Mark 1 Quantum, bearing chassis number 001, was a development mule and was subject to so much adjustment that the Wooldridge brothers eventually decided the car would be too dangerous to keep on the road.

By 1993, the firm was also offering a 2+2 convertible, also based on the Ford Fiesta Mark 2, which has been Quantum's most successful model with 431 examples built to date.

One 2+2 (numbered Q2-275, with a two-litre engine rather than the more common Fiesta XR2 one, was featured in magazine articles[3] and also loaned to the BBC's Top Gear for testing.

[4] The prototype, and a handful of early customer cars, had round headlights but the alternative nose with the drop down flaps was offered as production started and proved far more popular.

One owner has converted his car to full electric drive using a HPEVS AC50 motor with Curtis 1238 controller with Li battery pack front and rear.

The 2+2 is no longer made but plans had been mooted by the previous owners of QSC to further revise the design to offer more spacious rear seats, although to date this has not happened.

The H4 was based on the Ford Fiesta Mark 3 and used what is often erroneously referred to as a "surrey top" roof panel (which could be stored in the boot) and a rear section which could rotate into the bodywork to make a full convertible.

[6] At the beginning of development the curved glass for this rear section proved hard to source but eventually an Italian supplier was found.

[8] The car was shown at the third International Auto Show in Tehran in 2002 and was also advertised by being used in the 2002 movie The Lucky Bride, but the company was unable to get the requisite licenses and production never started.

The Sunrunner was a beach-buggy style of car based on the Mk 3 Fiesta and brought in to add to the Quantum portfolio rather than designed in-house.