What Difference Does 65
Years Make?
I was looking up the
gear ratios in mph/1000 rpm for my every day transport and it struck
me that the first four were very similar to the ratios of my SS
Jaguar. I then looked at some other comparative figures such as length
and weight only to find that they too were very similar. Thus armed I
thought I would tabulate these and some other numbers that are easily
obtained just to see how much cars have changed in 65 years.
OK, so the energy density of Diesel fuel is about 10% greater than
that of petrol but to haul a car of similar bulk and weight with 40%
greater speed whilst using less than half the fuel quantity is a
significant improvement if not in quite the same league as the
performance improvement of computing devices over the same time frame.
(Computing 1940 to 2005: Calculations/second/$ improved by a factor of
10,000,000 to 1)
Mondeo TDCi 130* SS Jaguar 2½ ltr
SS Jaguar 3½ ltr
Length
15' 7”
15' 6”
15' 6”
Height
4' 9”
5' 1”
5' 1”
Width
5' 11”
5' 6”
5' 6”
Wheelbase
9'
10'
10'
Front Track
5'
4' 6”
4' 6”
Weight
31.3 cwt
32 cwt
32 cwt
Max Power
128 bhp
104 bhp
125 bhp
Max Torque
245 lb-ft
135 lb-ft
185 lb-ft
1st mph/1000
5.74
5.6
5.96
2nd mph/1000
9.48
9.54
10.16
3rd mph/1000
14.2
14.68
15.64
4th mph/1000
20.9
20.16
21.48
5th mph/1000
28.74
6th mph/1000
35.82
30-60 in 4th
8.5 sec
15 sec
14.5 sec
30-60 in 5th
14.2 sec
-
-
0-60 mph
9.5 sec
17 sec
13.8 sec
Max Speed
129 mph
87 mph
91 mph
Fuel Cons.
48 mpg
19 mpg
18 mpg
*Read Jaguar X
Type 2.0 litre Diesel if you prefer.
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