| Lotus Mark VI | |
|---|---|
 | |
| Overview | |
| Manufacturer | Lotus Cars |
| Production | 1952–1957 |
| Designer | Colin Chapman |
| Body and chassis | |
| Class | Sports car |
| Body style | Roadster |
| Related | Ford Prefect |
| Powertrain | |
| Engine | Ford side valve 1172 cc |
| Transmission | 3-speedmanual |
| Chronology | |
| Predecessor | Lotus Mark V |
| Successor | Lotus Seven |
TheLotus Mark VI is the first production car byLotus Cars. It was introduced byColin Chapman in 1952 after previously building multipletrials androad racing cars. The heart of the Mark VI is a semi-space frame chassis.[1] Rather than a complete car, it was available to the general public askit, wherein the customer could install any preferred engine andgearbox, making it eligible for a wider number of formulae.
The Mark VI in many ways reflected Chapman's background in engineering: his designs resulted from a stress analysis of loads into the frame, they were extremely light (the 6' space frame weighed only 55 lbs (25 kg)), and the suspension incorporated the latest advances. The prototype chassis was built up by the Progress Chassis Company and the aluminium body was constructed bypanel beaters Williams and Prichard. (Both firms would later furnish bodies and chassis for subsequent models.) The cheap and easily available mechanical parts were sourced from theFord Prefect. The Mark VI became a common sight on Britain's racetracks and was a frequent winner, beating many more powerful and expensive cars; it earned praise for its handling and acceleration.[2]
An important facet of the success of the kit was Chapman's offering a comprehensive package in the Mark VI, including most of the special parts needed, and not just the chassis. The Mark VI chassis came with mounting points for several different engines including the 1172 cc (71.5ci)Ford 10, the 1250 cc or 1500 ccMG TF, the 1500 cc (92 ci)Consul, and the exaltedCoventry Climax. Standardized as far as possible for volume production, some units were customized per the owners wishes. Lotus even modified the owner's parts, if needed. The success of the Mark VI in competition and sales (100 built by 1955[2]) established Chapman as a manufacturer of specialty cars.
