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Lagonda LG6 and V12 models
 

The LG6 was the last development of the six cylinder 41/2 litre. It used a similar chassis to the VI2 but of different wheelbase. 'This chassis has nothing in common with the earlier LGs, being diagonally cross braced instead of ladder form and is independently suspended by torsion bars at the front, using unequal length wishbones. It also featured hydraulic brakes with a tandem master cylinder so that a failure on one pair of wheels left braking on the others. The V 12 and the LG6 came out together at the 1937 Motor Show with production starting at the beginning of 1938. 'The V 12 was also a 41/2 litre, being 4480cc (75 x 84.5mm) and coming in three chassis lengths according to the sort of body required. All could do about 100 mph, the lighter ones considerably more. The LG6 came on a 10'71/2" wheelbase standard chassis and on 11'31/2" long one, whereas the V 12 had 10'4", 11'0" and 1l'6" wheelbase versions and, in each case, a taller radiator was fitted to the longer cars to preserve the balance of their looks. A new design of radiator was employed for both models with a deeper top tank and a curved top line to be slats, imparting a rather melancholy expression to the front. The 31/2" difference in wheelbase between the models is accounted for by the difference in length between the six and twelve cylinder engines, and otherwise they were similar. The rear axle was a new one too, being of hypoid design and American manufacture for the V12 but retaining Lagonda's tried spiral bevel for the LG6.

Both LG6 and V 12 ranges featured a Rapide model but, in both cases, it was a much "tamer" car than the LG45R and the bodywork is normally a close coupled drophead or tourer not very different from the standard cars and with slight differences in the engine. The V12 engine has one overhead cam per bank and two SU carburettors for the standard engine, four for the more advanced ones. Rather surprisingly, production did not stop at the outbreak of war and some cars were delivered to (usually American) customers well into 1940.

Wheelbase 3353 mm 132 in  
Track front 1524 mm 60 in  
rear 1524 mm 60 in  
Length 5232 mm 206 in  
Width 1829 mm 72 in  
Ground clearance 191 mm 7.5 in  
Kerb weight 1473 kg 3247 lb  
Fuel capacity 90.9
litres
20
UK Gal
24
US Gal
engine
Manufacturer Lagonda
Type V-12
OHV
24 valves total
2 valves per cylinder
Bore stroke 75.00mm 84.50mm
2.95 in 3.33 in
Bore/Stroke ratio 0.89
Displacement 4480 cc
(273.386 cu in)
Unitary capacity 373.33 cc/cylinder
Compression ratio 7.00:1
Fuel system 2 SU carbs
Aspiration Normal
Max. output 177.4 PS (175.0 bhp) (130.5 kW)
@5500 rpm
Coolant Water
Specific output 39.1 bhp/litre
0.64 bhp/cu in
0-50mph (80 km/h) 9.00s
Top speed 169 km/h
Power-to-weight 118.81 bhp/ton
chassis
Engine location Front
Engine alignment Longitudinal
Turning circle 12.30 m
Suspension Front I.TB.
Rear LA.SE.
Transmission 4M
Drive RWD
Top gear ratio 1.00
Final drive ratio 4.27