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1918 Hupmobile R Series
Roadster
Standard Specifications
  Show Summary  
Original Base Price $1,250.00
No. Produced 10,821
Body Maker
No. Doors 2
Passengers 2
Model Number
Weight
Wheelbase 112 inches
Length
Width
Height
Front Tread 56 inches
Rear Tread 56 inches
Type Own Vertical, L-head
Displacement 182.5 cu. in.
Cylinders 4
Bore & Stroke 3 1/4 & 5 1/2 inches
Compression Ratio-Std
Compression Ratio-Opt
Brake Horsepower
Rated Horsepower 16.9
Torque
Main Bearings 3
Valve Lifters
Block Material
Engine Numbers
Engine No. Location
Lubrication Splash with pressure
Type
Make Stromberg
Type Selective sliding gear
Drive Rear wheel drive
No. Of Gears 3
Gear Ratios
1st Unknown
2nd Unknown
3rd Unknown
4th Not applicable
5th Not applicable
Reverse Unknown
Dry plate
Clutch Size
3/4 floating
Spiral bevel
Differential Ratio 4.91 to 1
Front Semi-elliptic leaf springs
Rear Semi-elliptic leaf springs
Screw & nut
Service External contracting on rear wheels
Front Size Not applicable inches
Rear Size
Emergency Internal expanding on rear wheels
Size
Exhaust System
Ignition System Single
Battery 6 volt storage battery
Cooling System Thermo-syphon
Radiator Cellular
Fuel Type
Mileage
Wheel Type Wood
Wheel Mfr
Wheel Size
Tire Type
Tire Size 32 x 4
Spare Location
Fuel
Oil
Transmission
Cooling System
Rear Differential
Front Differential Not applicable
Transfer Case Not applicable
Not Rated
VIN/Serial no. R1 to R15000
VIN Description
VIN Location On plate where steering column joins dash.
General VIN Decoder

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Additional Information
No. produced is 1917-1918 calendar year production for the series.

The Production Figure Book for U.S. Cars Jerry HeasleyHorseless Carriage Foundation
8186 Center St. Suite F P.O. Box 4119
La Mesa CA 91944-4119
(619) 464-0301
www.hcfi.org
Handbook of Automobiles 1918Detroit Public Library (Nat'l Auto. Hist. Collctn)
5201 Woodward
Detroit MI 48202
(313) 833-1456
www.detroit.lib.mi.us/nahc/index.htm
Motor Age January 3 1918Horseless Carriage Foundation
Paint Type
Colors Hupmobile Blue
Standard/Optional Equipment
WindshieldStd
SpeedometerStd
Electric hornStd
Top and top hood for open carsStd
Demountable RimsStd
AmmeterStd
Tire PumpStd
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