Alfa Romeo RM

The Alfa Romeo RM was produced between 1923 and 1925, based on the RL model. It was introduced for the first time at the 1923 Paris Motor Show and total production was around 500 cars. The RM had a 2.0 L inline-four engine which produced between 40 and 48 PS (29 and 35 kW). As were most of Alfa Romeo's cars, this was also used in motorsports. Three versions were made: Normal, Sport and Unificato. Sport had a raised compression ratio, and Unificato had longer wheelbase and a slightly bigger engine. The RM's top speed was around 90 km/h (56 mph).

Models [2]
ModelEngine displacementMax powerYears produced
RM Normal1944 cc40 PS (29 kW)(1923)
RM Sport1944 cc44 PS (32 kW)(1924)
RM Unificato1996 cc48 PS (35 kW)(1925)
Alfa Romeo RM
Alfa Romeo RM Sport with Castagna body
Overview
ManufacturerAlfa Romeo
Production1923–1925
AssemblyPortello, Milan, Italy
Body and chassis
Body stylelimousine
convertible
LayoutFR layout
Powertrain
Engine1.9 L I4
2.0 L I4
Transmission4-speed manual[1]
Dimensions
Wheelbase2,900 mm (114.2 in) (RM Sport)
Length4,250 mm (167.3 in)
Width1,680 mm (66.1 in)
Height1,650 mm (65.0 in)
Curb weight1,450 kg (3,197 lb)
Chronology
PredecessorAlfa Romeo RL
SuccessorAlfa Romeo 6C

Alfa Romeo half-track

A very rare half-track version based on the RM was built in the 1920s. The half-track used the RM's inline-four engine modified to work with dry sump lubrication. The track used was licensed to Citroën Kegresse; only one example is known to survive.[3][4]

Notes
  1. "Technical specifications of 1924 Alfa Romeo RM Sport". carfolio.com. Archived from the original on 5 February 2008. Retrieved 2008-01-04.
  2. Borgeson (1990).
  3. "1924 Alfa Romeo RM Four Wheel Drive half-track Torpedo". kidston.com. Archived from the original on 2013-12-12. Retrieved 2011-12-17.
  4. "1924 Alfa Romeo RM Four Wheel Drive Winter Sports half-track". motorbase.com. Retrieved 2007-12-22.

References

Borgeson, Griffith (1990). The Alfa Romeo Tradition. Haynes (Foulis) Publishing Group Ltd. Somerset, UK. ISBN 0-85429-875-4.


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