Aston Martin DB6 - History and Design

History and Design

After Aston Martin rejected proposals for a replacement for its DB5 from Touring of Milan, the decision was made to focus on their own development car, registered 4 YMC. Wind tunnel testing, begun in February 1965, showed development was necessary to counteract a tendency toward aerodynamic lift causing reduced rear-wheel traction at high speed. Final development phases relied upon DB5 chassis, suitably lengthened and titled MP 219, with rear lip-spoiler and abbreviated Kammback tail Aston Martin previously incorporated in sports-racing prototypes. The decision was made to produce MP 219 as the Aston Martin DB6 although the prototype de Dion rear axle was rejected, Aston's soldiering on with its well-located live-axle configuration reducing time to market, cost and complexity.

Introduced at the 1965 London Motor Show, the DB6 was already a dated design notable as the first model engineered following a factory relocate from Feltham to Newport Pagnell. The DB6 shares a large resemblance to its predecessor, the DB5; with the most noticeable differences being its wheelbase, side profile, split front and rear bumpers and rear panels incorporating the Kammback tail rear end. The tail, combined with the relocated rear-axle and the 3.75-inch (95 mm) lengthened wheelbase, provide more stability at high speed. Though fashionable-the rear-end Kamm-styled design was similar to the Ferrari 250-it did not prove popular with conservative, tradition oriented Aston clientele when the DB6 was introduced. Performance was satisfactory: road-tests of the day observed top speed of the Vantage model between 145 mph to 148 mph, with intrepid and fearless John Bolster aboard a Vantage spec DB6 reaching a two-way average of 152 mph.

The DB6 continued with then high-tech Armstrong Selectaride cockpit-adjustable rear shock absorbers as available on the DB5. Other highlights include adopting front-door quarter windows, an oil-cooler air scoop low on the front valance, quarter-bumpers at each corner, revised tail-lamp clusters; additionally the spoiler with the luggage capacity affected overall proportions of the DB6, to an increased length approximately two inches.

Other notable changes:

• Roof line raised by two inches improving headroom especially for rear seat passengers
• Genuinely useful leg room for rear passengers
• More steeply raked albeit taller windscreen
• Split front and rear bumpers
• Standard chrome wire wheels on bias-ply whitewall tyres
• Optional power steering
• Optional air conditioning
• Standard ZF five-speed manual unit and a BorgWarner or optional three-speed automatic gearbox available at no extra cost
• Optional Vantage specification retaining triple side-draft Weber 45DCOE carburetors with other minor revisions raising quoted output to 325 hp

Another major change from the DB5 to DB6 was abandonment of the full superleggera construction technique patented by coachbuilders/stylist Touring of Milan. For later DB6's construction, the more common body-on-platform technique was used; this was primarily due to the extended rear requiring a stronger and more rigid design using folding sheet metal frames. Surprisingly the modifications combined to add only seventeen pounds weight compared to the DB5.