McLaren Cars by Type #

M4A -1967
In 1967 Robin Herd produced three major design, for Can-Am, Formula 1 and Formula 2. The M4A was a simple monocoque for Formula 2 and raced by Bruce seven times. Some chassis appeared in Formula 3 guise. Piers Courage raced a M4A in the 1968 Tasman Series and gave the M4A its only major victory, it did however prove very popular and won many races in New Zealand.

Chassis: Bathtub monocoque formed from aluminium panelling bonded and riveted to four mild steel bulkheads
Suspension: Single top link with radius arms and lower wishbones, outboard coil spring/shock units and anti-roll bar in front. Twin radius arms, reversed lower wishbones and single top links with outboard coil spring/shock units at rear. McLaren-Elva cast magnesium wheels, 13 x 7 front, 13 x 10 rear (5.00 and 6.25 - 13 tyres).
Brakes: Girling or Lockheed 10� inch discs all around with AR calipers.
Body: Formed by monocoque sides plus fibreglass nose cone and cockpit surround.
Engine: Cosworth-Ford FVA 1600cc 4 cylinder unit with five speed Hewland FT200 transaxle.
Dimensions: Wheelbase 90 inches, front track 54 inches, rear track 54 inches, overall length 121 inches , height 30 inches, weight 830 pounds.

M4B - 1967
The M4B was the production variant of the Formula 2 design using the Lotus-Ford twincam engines and Hewland HD transaxles for the American Formula B racing. Another so called M4B, the subject of this specification, was the interim 1967 Formula 1 car raced by Bruce McLaren. This was a stop gap measure between the demise of the M2B and the appearance of the new BRM powered M5. The car was also fitted with side sponson to provide extra tankage.
Trojan built 25 M4A/B cars in 1967-1968.

Chassis: Bathtub monocoque formed from aluminium panelling bonded and riveted to four mild steel bulkheads
Suspension: Single top link with radius arms and lower wishbones, outboard coil spring/shock units and anti-roll bar in front. Twin radius arms, reversed lower wishbones and single top links with outboard coil spring/shock units at rear. McLaren-Elva cast magnesium wheels, 13 x 7 front, 13 x 10 rear (5.00 and 6.25 - 13 tyres).
Brakes: Girling or Lockheed 10� inch discs all around with AR calipers.
Body: Formed by monocoque sides plus fibreglass nose cone and cockpit surround.
Engine: 2.1 litre BRM V-8 with Hewland FT200 transaxle.
Dimensions: Wheelbase 93 inches, front track 54 inches, rear track 54 inches, overall length 121 inches , height 30 inches, weight (with ballast) about 1120 pounds to comply with F1 limit.