Cadillac Models & History M 1907
TheModel M chassis was the same as the Model K except for a two inch longer wheelbase. Additional body styles were offered. Straight line Touring model was available again. The folding Tonneau was new. The tonneau folded to look like a runabout but this body was not available on the shorter Model K chassis.
First production one cylinder Coupe offered.
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1907 Cadillac Model M Victoria Touring
I.D. NUMBERS
Serial numbers on plate on rear of body (with engine number). Engine numbers were stamped in three places on the crankcase:
- On the top of the crankcase at the right edge of cylinder flange, near water outlet
- On the top surface of the crankcase at the left, front mounting leg
- On a plate on the rear of body
Blank spaces on the patent plate were for additional patent dates, not engine or serial number
Serial number: 21851 to 22150 and 24075 to 24350
MODEL M ENGINE
Engine
|
|
Bore & Stroke
|
127mm x 127mm |
Displacement
|
1.609 Liters |
Brake H.P.
|
10 hp |
Engine description
|
Two main bearings, mechanical valve lifters |
Carburetor
|
Updraft mixer manufactured by Cadillac |
Transmission
|
Planetary |
Gears
|
3 forward, 1 reverse |
Gear ratios
|
Low: 3:1; High: 1:1; Reverse: 3:1 |
Drive
|
Chain |
Differential
|
Spur gear |
Overall ratio
|
3.1:1 to 5:1 depending on drivetrain option |
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1907 Cadillac Model M
MODEL M CHASSIS
Tires (touring)
|
30 x 3.5 |
Tires (other bodies)
|
32 x 3.5 |
Wheelbase
|
1930mm |
Overall length
|
2921mm |
Height
|
1575mm |
Front/Rear Tread
|
1422mm |
Optional Front/Rear Tread
|
1549mm |
Brakes
|
Mechanical on two wheels contracting on inboard drums |
Wheels
|
23″ wood with 12 spokes |
MODEL M DRIVETRAIN
- Different combinations of 9 or 10-tooth driving sprocket with 31, 34, 38, 41, or 45-tooth driven sprocket gave ten possible ratios from 3.1:1 to 5:1.
- Lower ratios for runabout to be run on smooth, level roads to higher ratios for loaded delivery cars to be run on rough, hilly roads.
- Instructions for changing sprockets were furnished to owners, but the change involved disassembly of the transmission and rear axle — definitely not a “quick-change” set-up
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1907 Cadillac Model M
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1907 Cadillac Model M