Cadillac Models & History 1909

CADILLAC – MODEL “THIRTY”

 

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1909 Cadillac Model Thirty

Afteran inauspicious trial in the luxury car field, and recognizing the disappearing market for the single cylinder cars which made their reputation, Cadillac settled down with a design which had originated in 1906 (the 1907-1908 Model G). With in-house mass production of a single line, Cadillac was able to offer a high quality automobile at a moderate price: $1400 for the Model “Thirty” as compared to $2000 for the Model G.

Cadillac offered three models: 2-door Touring 5-passenger; 2-door Demi-Tonneau 4-passenger; and Roadster 3-passenger. The “Thirty” differed from the Model G as follows:

Bodies

  • No closed bodies were offered.
  • A detachable tonneau was once again available.
  • It also had steel doors and cowl on the roadster and Demi-tonneau.
  • Flared, twisted front fenders replaced the bulky flat fenders with filler between the fender and frame.
  • Full running boards and running board dust shields were available on all bodies.
  • There were no louvers in the hood.
  • The bodies were finished (painted) by Cadillac

Chassis

  • 3/4 platform rear spring system.
  • Single dropped frame.
  • Wheelbase lengthened to 2692mm
  • In mid-year, brake drum diameter was increased to 304.8mm

Drive line

  • Transmission refined and mounted at three points to frame cross members rather than at the four points to frame side rails.
  • Universal joint was housed in the ball joint at rear of the transmission.
  • Rear axle with bevel gear differential made by American Ball Bearing
  • Engine
  • Drive for water pump (gear type) and oiler changed from external belt to internal gears.
  • Gear driven accessory shaft allows for optional magneto.
  • Speed governor no longer used.

I. D. DATA

1909 Cadillac Thirty

 

1909 Cadillac Thirty

  • Serial numbers were located on a plate on the rear of the body or on the dash (with the engine number)
  • Engine numbers were stamped on top surface of crankcase — in front of and to the left of the number one (front) cylinder.
  • Range: 32002 – 37904.

ENGINE

Engine Type
Vertical in-line, L-head.
Number of cylinders
Four cylinders
Block
Individual cast iron cylinder, copper water jacket
Bore & stroke
101.6mm x 114.3mm
Displacement
3.708 Liters
Brake horsepower
30 A.L.A.M.; 25.6 Advertised H.P.
Main bearings
Five main bearings
Valve train
Mechanical push rod roller cam followers
Carburetor
Float feed carburetor made by Cadillac.

CHASSIS

Wheelbase
2692mm
Front/Rear Tread
1422mm
Optional Front/Rear Tread
1549mm
Tires
32 x 3-1/2

DRIVETRAIN

Transmission
Selective sliding gear transmission
Speeds
3 Forward/1 Reverse
Controls
Right hand drive, controls to right
Clutch
Leather faced cone clutch
Drive
Shaft drive
Rear drive
Plain live rear axle, bevel drive; bevel gear differential
Overall ratio
Touring and Demi-Tonneau = 3.50:1; Roadster=3.00:1
Optional Final drive ratios
3.00:1, 3.50:1, 4.00:1
Brakes
Mechanical brakes on two wheels — service/foot/contracting — emergency/lever/expanding
Wheels
Wood artillery wheels, 10 & 12 spoke, quick detachable rims
Wheel rim size
25 in

OPTIONS

Seat covers
$45 – $75
“Rubber,” mohair, or leather tops
$55 – $125
Bosch, Dow, Eisenbann, or Splitdorf magnetos
$100 – $126
Rushmore style B headlamps with Rushmore No. 1 generator
$46.50
With Prest-o-lite style B tank
$59.50
Mezger windshield
$50
Gabriel horns, style 1, 2, 3, 4
$15 – $35
Stewart & Clark speedometer
$15 – $40

HISTORICAL NOTES

1909 Cadillac Notes

  • Introduced December 1908.
  • Model year sales and production: 5903.
  • Henry M. Leland was president and general manager
  • Frank Johnson was chief engineer
  • On July 29, 1909, Cadillac Motor Car Co. became a wholly owned subsidiary of General Motors Co., and Henry Leland became president and general manager of Cadillac Motor Car Co.

1909 Automotive Notes

  • Industry output 123,900 cars and 3255 trucks (double the production of 1908)
  • U.S. District Court confirms Selden’s patent saying that Ford has infringed on it
  • Cadillac and Oakland join GM
  • William M. Eaton was president of GM
  • Hupmobile puts the transmission and multiple-disc clutch integral with the engine
  • The Hudson Motor Car Company is formed
  • Ford can’t keep up with Model T demand
  • Packard introduces a smaller, less expensive Model Eighteen 4-cylinder
  • Louis Chevrolet begins work on a 6-cylinder car
  • Top model year production for 1909
Ford17,771
Buick14,606
Maxwell9460
Studebaker & EMF7960
Cadillac7868
Reo6592
Oldsmobile6575
Willys-Overland4907
Oakland1035