TheModel B was introduced in 1904. The single cylinder Model B remained unchanged from the 1904 Cadillac. The horsepower was now rated at 9 instead of 8.5. In 1904, the optional 1524mm (wide track was not available on the Model B; but this year a 1549mm tread was also made optional by the use of tubular axle to replace the pressed steel axle with standard tread.
MODEL B IDENTIFICATION & SPECIFICATIONS
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1905 Cadillac rear entrance tonneau
The transmission had two forward speeds (3:1 and 1:1) and one reverse with a disc clutch and chain drive.
The overall ratio was between 3.1:1 and 5:1 depending on the combination of the size of the sprockets.
The drive sprocket had 9 or 10 teeth and the driven sprocket had 31, 34, 38, 41, or 45 teeth.
9-T Drive sprocket
10-T Drive sprocket
31-T Driven sprocket
34-T Driven sprocket
38-T Driven sprocket
41-T Driven sprocket
45-T Driven sprocket
The lower ratios were used on the runabouts used on smooth, level roads; but the higher ratios were used on hilly roads and for delivery vehicles.
Owners were instructed how to change the sprockets, but it involved the disassembly of the transmission and rear axle — hardly a job for the average motorist.