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Maserati Tipo A6GCM
Specifications
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Maserati Tipo A6GCM

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SPECIFICATIONS

Brief History:
After the decline in the 4CLT/48 entry into Formula 1, which had become a confrontation between Alfa Romeo and Ferrari would have been uneconomic.  Maserati instead focused on Formula 2 in which the A6GCS had also run.  Two new cars were built initially - each A6GCM utilised a dual overhead camshaft, single ignition engine with 160 bhp, derived from the A6GCS and on a chassis similar to the 4CLT/48.  Constructed but not utilised, these cars were sold to the Bandereintes team.  In 1952 a transitional car appeared with a square engine 75x75 mm, dual ignition and an increase of power to 180 bhp, but the car had fundamental problems with the chassis. In 1953 under the guidance of Giachino Columbo there was a total revision, the engine was given new dimensions 76.2x72mm and a torsion resistant chassis using a trellis structure.  Concerns about the rear axle were resolved by anchoring it to to the frame with an integrating triangle of reaction bars and seven-leaf semi-cantilevered leaf springs. Larger new front brakes with deep radial fins were added.  A more elliptic shape for the front cowling and with other minor body variations its saw its first event at Naples in 1953.  Designated by some as the A6SSG it was in fact the definitive AGCM which laid the framework for the 250F which would follow.

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Specifications:
Production Period: 1951-1953
Designed By: Massimino & Bellentani, initially then Columbo
Body Built By: Fantuzzi - single seat aluminium
Number Built: 12
Dry Weight: 550-560 kg - 1951-52
570 kg - 1053
Top Speed: 250 kph
Engine Type: Front, vertical in-line six cylinder
Bore and Stroke: 72.6x80 mm 1951-52
75x75 mm 1952
76.2x72 mm 1953
Displacement: 1987 cc 1951-52
1988.1 cc  1952
1959.5 cc  1953
Compression: 13.5:1  1951-52
12:1  1953
Engine Output: 160 bhp @ 6500 rpm  1951-52
180 bhp @ 7300 rpm  1952
197 bhp @ 8000 rpm  1953
Valves & Actuation: Two OHV per cylinder with dual overhead camshafts
Carburettion: Free induction with three Weber 38DCO3 (1951-52) and 40DCO3 from 1952-53
Ignition: Single with Marelli ST25DAS magneto (1951-52):  Double with two Marelli magnetos (1952-53)
Lubrication: Forced with pressure and scavenger pumps
Drive: Rear wheel drive
Clutch: Dry multi-disc
Gearbox: 4-speeds plus reverse
Frame: Tubular with longitudinal and cross members
Suspension - Front: Independent wheels, coil springs with Houdaille hydraulic shock absorbers
Suspension - Rear: Rigid axle, longitudinal leaf springs with Houdaille hydraulic shock absorbers
Brakes: Hydraulically operated wheel drums
Wheelbase: 2280 mm (1951-52)
2310 mm (1953)
Front & Rear Track: 1278 mm front; 1200 mm rear (1951-52), 
1225 mm front; 1160 mm rear (1953)
Wheels & Tyres: Spoked:  4.00x15 (1951-52), 5.00x16 (1953)
Tyres: Pirelli 5.00x15 - 5.50x15 (1951-52) 5.00x16 (1953) front; 6.00x15, 6.50x15 (1951-52) 6.50x16 (1953) rear
    
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Last updated:   Monday, June 30, 2003.