Aermacchi Monsone

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Aermacchi
Monsone
Manufacturer Aeronautica Macchi
Sales description 125 M.
Production period 1952 to 1954
class motorcycle
Motor data
1-cylinder 2-stroke
Displacement  (cm³) 123 cc
Power  (kW / PS ) 4.2 kW
Top speed (  km / h) 75 km / h
transmission 3-speed
drive Chain
Brakes drums

The Aermacchi Monsone (also Aermacchi 125 Modelo M ) is a motorcycle that the Italian company Aeronautica Macchi manufactured from 1952 to 1954. "Monsone" means " monsoon " in German .

history

The Monsone was developed from the manufacturer's first motorized two-wheeler, the Cigno scooter , and introduced in 1952. It was considered a sports version of the Cigno. It differed from it in a slightly more highly compressed engine, a seat instead of the two bicycle saddles and, above all, a tank in front of the seat, which turned the Monsone into a motorcycle.

At the same time, the similarly structured two-cylinder model Bicilindrica appeared in 1954, the Monsone was discontinued without a successor.

technology

Engine and drive

The Monsone has an air-cooled single cylinder - two-stroke engine with nearly horizontal cylinder. On the left stump of the double-bearing crankshaft there is a multi-disc dry clutch via which the engine power is transmitted to a straight-toothed three-speed gearbox. The transmission is connected to the rear wheel by a machine chain.

The petrol / oil mixture 1:17 is fed to the engine via a round slide carburetor with a 17 mm passage from the tank under the saddle. The ignition spark comes from an ignition light magnet .

Frame and chassis

The Monsone has a tubular steel frame with lowered central tubes. Both wheels sit in sprung arms with friction shock absorbers. The engine and transmission are also attached to the front of the rear swing arm. The frame and fenders are always painted in red or black.

Wheels and brakes

The 17 ″ wheels are wire-spoke wheels and have half-hub drum brakes . The rear brake is operated via a foot lever on the left side of the engine and a linkage, the front with a cable from the handlebars.

Technical specifications

Type Monsone 125 M.
Construction period 1952-1954
Displacement 123.0 cc
Bore × stroke 52 mm × 58 mm
compression 6.5: 1
power 5.7 HP (4.2 kW)
at speed 5100 rpm.
transmission 3-speed
Brakes front / rear Drum 125 mm / drum 125 mm
Front / rear tires 3.00 ″ × 17 ″ / 3.00 ″ × 17 ″
Top speed 75 km / h

Sources and individual references

  1. a b c d e f g h Aermacchi 125 Mod. M (Monsone) . Aermacchi Registro Storico Italiano. Retrieved February 25, 2014
  2. a b c Mick Walker: Aermacchi . Transport Source Books, Olney & Ipswich 1995. ISBN 1-85847-501-5 (English)