MV Agusta 150 Sport RS

The MV Agusta 150 Sport RS (Rapido Sport) was a motorcycle produced by the Italian motorcycle MV Agusta in their Cascina Costa plant from 1959 to 1969.[2]

MV Agusta 150 Sport RS

MV Agusta 150 Sport RS
Manufacturer	MV Agusta
Also called	MV Agusta 150 Rapido Sport
Production	1959-1969
Class	Sport
Engine	150 cc four-stroke OHV single-cylinder
Bore / stroke	59.5 x 54 mm
Compression ratio	8:1
Top speed	115 km/h (71 mph)
Power	10 bhp (7.5 kW) @ 6,400 rpm
Ignition type	Flywheel magneto
Transmission	Wet, multi-plate clutch, unit construction 4-speed gearbox (5-speed from 1966), chain drive
Frame type	Double cradle tubular and pressed steel
Suspension	Front: telescopic forks Rear: swinging arm with hydraulic dampers
Brakes	Front: 150 mm drum brake Rear: 125 mm drum brake
Tires	2.75 x 18 front & rear
Wheelbase	1280 mm
Weight	110 kg (dry)
Footnotes / references [1][2][3]

Overview

The Codice della Strada (Italian Highway Code) was amended in 1959 to prohibit motorcycles of under 150 cc from using the autostradas (motorways). MV Agusta responded by producing a 150.1 cc machine based on the 125 Centomila.[3][4]

Initially sold for 230,000 lire, the RS was in the market for 10 years selling 6515 units. The Centomila (one hundred thousand) engine was reputed to last for 100,000 km, thanks to a modified lubrication system,[2] including a larger capacity sump and centrifugal filtering system.[5]

Finished in the classic colours of Rosso and Ivory, the machine had a double exhaust system, a low fuel tank that partially covered the cylinder head and a sporty riding position.[3][6]

Over the years the model underwent a few changes. Prior to February 1963, the machines had covered rear shock absorbers and tank cap with side-opening pin, after that date, shock absorbers with open springs and a tank cap with vertical opening were fitted. In 1966 a new 5-speed gearbox was introduced and the colour scheme changed to a silver frame with red tank.[2]

A Turismo GT version was introduced in 1960.[5]

Technical details

The engine was derived from the air cooled, single-cylinder 4-stroke 125 Centomila unit. To gain the extra displacement, the bore was increased from 54 to 59.5 mm. The 125's stroke of 54 mm was retained.[1][7] The cylinder was made of cast iron and the cylinder head light alloy.[8] Carburation was by a 20 mm Dell'Orto MB20B and power output was 10 bhp (7.5 kW) @ 6,400 rpm.[1]

A geared primary drive took power to the wet, multi-plate clutch. The unit construction gearbox initially had 4 speeds, 5 speeds were introduced in 1966, and final drive was by chain.[1]

For the chassis, MV's usual frame construction of steel tube and sheet metal was used. Telescopic forks were used on the front and rear suspension was by swinging arm and twin shock absorbers. Brakes were drums front and rear and spoked wheels were fitted.[1]

150 Turismo GT

1965 MV Agusta 150 Turismo GT

A Turismo GT version was introduced in 1960.[5] This had a single exhaust, higher handlebars and the petrol tank sat higher. The engine had a smaller 18 mm carburettor,[5] and developed 8 bhp @ 5,700 rpm.[8] 3,132 Turismo GTs were produced.[6]

150 Sport RS-S

In 1960 an updated model, the 150 Sport RS-S, was introduced. The machine had a new petrol tank with indentations for the rider’s knees and a single silencer. Finish was in red and black.[9] Compression ratio was raised to 9.7: 1 and a 22 mm Dell'Orto MB22B carburettor fitted. This raised power output to 12.5 bhp.[10] 215 examples were built until the model was discontinued in 1973.[9]

References

1. "MV Agusta 150 GT / RS / RSA". www.mv-agusta-club.de (in German). MV Agusta Club Deutschland. Retrieved 24 August 2019.
2. "150 Sport "RS"" (PDF). www.glaagusta.org. Retrieved 22 August 2019.
3. "150 Rapido Sport". www.mvagustaoldtimers.nl (in Dutch). MVagusta-Oldtimers. Retrieved 22 August 2019.
4. "Property of a deceased's estate,1963 MV Agusta 150cc Rapido Sport Project Frame no. MV RS 856022 Engine no. MV RS 856037". www.bonhams.com. Bonhams. Retrieved 24 August 2019.
5. "150 Turismo "GT"" (PDF). www.glaagusta.org. Retrieved 22 August 2019.
6. "MV Agusta Collection Rétromobile 2019 | 1962 MV Agusta 150 Rapido Sport". www.artcurial.com (in French). Artcurial. Retrieved 24 August 2019.
7. "MV Agusta 125 TREL / TRA Centomila". www.mv-agusta-club.de. MV Agusta Club Deutschland. Retrieved 24 August 2019.
8. "150 RS & 150 GT Owners Manual" (PDF). www.mv-agusta-club-schweiz.ch (in German). Retrieved 24 August 2019.
9. "150 Sport "RS-S"" (PDF). www.glaagusta.org. Retrieved 24 August 2019.
10. "MV Agusta 150 RS "S"". www.mv-agusta-club.de (in German). MV Agusta Club Deutschland. Retrieved 24 August 2019.

External links

• Mv Agusta 150 rapido sport on YouTube