MV Agusta 750 Sport America
 MV Agusta 750 Sport America | |
| Manufacturer | MV Agusta |
|---|---|
| Also called | MV Agusta 750 S America MV Agusta 800 S America |
| Production | 1975 to 1977 |
| Predecessor | MV Agusta 750 S |
| Successor | None |
| Class | Sport bike |
| Engine | 789 cc 4 cylinder DOHC Four 26mm Dell'Orto carburetors |
| Bore / stroke | 69 mm × 56 mm (2.7 in × 2.2 in)[1] |
| Top speed | 210 km/h (130 mph) |
| Power | 75bhp (55kW) @ 8,500 rpm |
| Ignition type | Coil |
| Transmission | 5-speed cassette gearbox Shaft drive |
| Frame type | Half-duplex cradle |
| Suspension | Front: Ceriani Teledraulic fork Rear: Swingarm with hydraulic dampers |
| Brakes | Front: double disc brake 280 mm rear: 200 mm drum brake (280mm disc brake from 1976) |
| Wheelbase | 1,390 mm |
| Weight | 240kg (dry) |
The MV Agusta 750 Sport America (also called MV Agusta 750 S America in Germany, and MV Agusta 800 S America)[2] was a motorcycle manufactured by the MV Agusta company from 1975[3] to 1977. Derivative models were produced in limited numbers until 1982.
Development
In 1974 MV Agusta suffered financial difficulties and came under state administration. In 1975, Chris Garville and Jim Cotherman of Commerce Overseas Corporation, the US MV importers, initiated the new edition of the MV Agusta 750 S. The appearance should be more closely based on MV's racing machines, with the aim of increasing sales in the US.[4] Within 50 days, the designs of the two entrepreneurs were implemented at the Gallarate plant.[5]
Technical data
The core of the engine was formed by the crankcase rack. In the rack was mounted the nine-piece crankshaft, assembled in six bearing blocks using roller bearings, as well as the spur gears in the control tower for driving the two camshafts. After loosening twelve nuts, the units mounted on the rack could be lifted out.[6] Bore was increased by 2 mm over the 750 S models to increase capacity to 789cc. Individual light alloy cylinders (a block on the 1100 Grand Prix model) with cast liners were used with Borgo pistons. The two valves of each cylinder were actuated by bucket tappets from two overhead gear-driven camshafts. Particularly striking was the fine ribbing of the cooling fins on the sump as well as the oversized cylinder head acting by the double camshaft drive.[7] The gearbox was transversely mounted in a cassette. It was connected to the shaft drive to the rear wheel via a spiral bevel gear angle drive.[8] The engine was, like all MV four-cylinder models, assembled by hand.[9]
The diameter of the Cerani telescopic forks was increased from 35 to 38 mm, and double disc brakes were used on all models. The gear shift was transferred to the left side of the engine. The red livery, the suede-covered seat and the Smiths round instruments made this a sporty and elegant motorcycle.[10]
Model Variants
| 800 SS Super America | 800 SS Super Daytona America |
850 SS Monza | |
|---|---|---|---|
| Production | 1976–1978 | 1976–1978 | 1977–1978 |
| Capacity | 789 cm³ | 789 cm³ | 837 cm³ |
| Bore/Stroke | 67 × 56 mm | 67 × 56 mm | 69 × 56 mm |
| Power | 60 kW/82 PS 9.000 min−1 |
66 kW/90 PS 10.000 min−1 |
66 kW/90 PS 9.000 min−1 |
| Secondary drive | Shaft | Shaft | Shaft |
| Wheelbase | 1420 mm | 1420 mm | 1420 mm |
| Maximum speed in km/h |
210 | ||
| Production quantity | 27 |
- MV Agusta 800 SS Super America (1976 to 1978): Enhanced version (82 bhp (60.4 kW) @ 9000 rpm) of the 789 cc base engine for the US market, optionally available with a 4-in-1 Magni exhaust system and magnesium wheels.[11]
- MV Agusta 800 SS Super Daytona America (1976-78): Further increased in performance with a Magni kit, a full fairing was also offered.
- MV Agusta 850 SS Monza or MV Agusta 850 SS Boxer (1977-78):[12] Bore increased to 69 mm to give 837 cc capacity and a Magni Motorkit fitted to give 90 bhp (66 kW) @ 9000 rpm.[13] The full fairing version was not available in Germany. 27 machines of this model were made.[14]
Hansen & Schneider special models
| 900 S Arturo Magni Cento Valli |
1000 S Corona | 1100 Grand Prix | 1000 Agostini | |
|---|---|---|---|---|
| Production | 1977–1978[15] | 1978–1982 | 1978–1982 | 1979–1980 |
| Capacity | 892 cm³ | 954 cm³ | 1066 cm³ | 954 cm³ |
| Bore/Stroke | 70 × 58 mm | 70 × 62 mm | 74 × 62 mm | 70 × 62 mm |
| Power | 77 kW/105 PS 10.000 min−1 |
78 kW/106 PS 10.000 min−1 |
88 kW/119 PS 10.200 min−1 |
73 kW/99 PS 9.500 min−1 |
| Secondary drive | Shaft | Shaft | Shaft | Shaft |
| Wheelbase | 1420 mm | 1390 mm | 1450 mm | 1450 mm |
| Maximum speed in km/h |
235 | 221 | 237 | 221 |
| Production quantity | 10 | 12 | 6 | 4 |
The importer for Germany, Hansen GmbH[16] in Baden-Baden, arranged the production of special models in 1976 with the consent of the factory. These were "luxury sports machines", and the impression was created that these motorcycles were made more as a kind of hobby than commercial reasons.[17] The displacement was increased over the factory 837 cc. At the same time, the crankshaft was changed, Mahle pistons and a sportier camshaft fitted. The standard suspension (steering head angle 63 degrees, caster 110 mm) with Ceriani fork front (125 mm travel) and Sebac gas struts rear (70 mm travel) were retained. Only the 1000 Agostini got the Magni frame and was thus nearly 20 kg lighter than a comparable production model. The new models which were officially offered only in Germany, but were available worldwide through Hansen, were:
- 900 S Arturo Magni Cento Valli
- 1000 S Corona
- 1100 Grand Prix
- 1000 Agostini[14]
Magni special models
Arturo Magni, former race director of MV Agusta, independently developed motorcycles from the existing MV engines.[16] The Magni kit consisted of a 11 kg lightweight frame, electronic ignition and 30 or 32 mm PHF carburetors. The models offered from 1978[14] were:
- Magni 832 (engine from the MV Agusta 850 SS Monza)
- Magni 861 (861 cc, 70 mm bore)
Overview
| 800 SS Super America | 800 SS Super Daytona America |
850 SS Monza | 900 S Arturo Magni Cento Valli |
1000 S Corona | 1100 Grand Prix | 1000 Agostini | |
|---|---|---|---|---|---|---|---|
| Production | 1976–1978 | 1976–1978 | 1977–1978 | 1977–1978[15] | 1978–1982 | 1978–1982 | 1979–1980 |
| Capacity | 789 cm³ | 789 cm³ | 837 cm³ | 892 cm³ | 954 cm³ | 1066 cm³ | 954 cm³ |
| Bore/Stroke | 67 × 56 mm | 67 × 56 mm | 69 × 56 mm | 70 × 58 mm | 70 × 62 mm | 74 × 62 mm | 70 × 62 mm |
| Power | 60 kW/82 PS 9.000 min−1 |
66 kW/90 PS 10.000 min−1 |
66 kW/90 PS 9.000 min−1 |
77 kW/105 PS 10.000 min−1 |
78 kW/106 PS 10.000 min−1 |
88 kW/119 PS 10.200 min−1 |
73 kW/99 PS 9.500 min−1 |
| Secondary drive | Shaft | Shaft | Shaft | Shaft | Shaft | Shaft | Shaft |
| Wheelbase | 1420 mm | 1420 mm | 1420 mm | 1420 mm | 1390 mm | 1450 mm | 1450 mm |
| Maximum speed in km/h |
210 | 235 | 221 | 237 | 221 | ||
| Production quantity | 27 | 10 | 12 | 6 | 4 |
End of production
With the departure of MV Agusta from racing in 1976, the production of the street models were reduced. Although prototypes were developed until 1977, they were not implemented due to the financial situation of the company - MV made little profit from motorcycles.[18] The production of the model MV Agusta 750 S America was maintained until 1978. The last of the 540 machines made were sold officially 1980. A total of 1276 four-cylinder machines were produced from 1966 to 1980.[19]
References
- ^ Falloon 2011, p. 167.
- ^ Schwab 1987, p. 63.
- ^ Gingerelli, Michels & Everitt 2011, p. 225.
- ^ Branch, Ben (7 December 2017). "The Rare MV Agusta 750S America". Silodrome. Retrieved 26 May 2019.
- ^ Motorrad 5/2003 p.14
- ^ "Geniestreich 4 Zylinder Motor". mv-agusta-club-schweiz.ch. Motorrad. 11 July 1979. Archived from the original on 20 April 2009. Retrieved 24 May 2019.
- ^ American Motorcyclist 2001, p. 87.
- ^ Colombo, Grizzi & Patrignani 2016, p. 87.
- ^ Colombo, Grizzi & Patrignani 2016, p. 36.
- ^ Motorrad 5/2003 p.17
- ^ "Quadrophonie". Motorrad (14): 6–10. 1997.
- ^ "Classic MV Agusta - MV Agusta 850SS Monza Boxer". thebikemuseum.com. The Bike Museum. Retrieved 26 May 2019.
- ^ "Boxer Tricks". The Bike Museum. Retrieved 26 May 2019.
- ^ a b c "Herstellerübersicht". MV Augusta Club. Retrieved 26 May 2019.
- ^ a b Schwab 1987, p. 58.
- ^ a b "Classic MV Agusta". thebikemuseum.com. The Bike Museum. Retrieved 26 May 2019.
- ^ Tragatsch 2000, p. 123.
- ^ Colombo, Grizzi & Patrignani 2016, pp. 39–41.
- ^ Motorrad 5/2003 p.21
Bibliography
- "Classics - 1975 MV Agusta 750 Sport America". American Motorcyclist. American Motorcyclist Assoc. June 2001. ISSN 0277-9358.
- Colombo, Mario; Grizzi, Otto; Patrignani, Roberto (2016). MV Agusta: From 1945 to the present. Giorgio Nada Editore Srl. ISBN 9788879116176.
{{cite book}}: Invalid|ref=harv(help) - Falloon, Ian (2011). The Book of the Classic MV Agusta Fours. Veloce Publishing Ltd. ISBN 9781845842031.
{{cite book}}: Invalid|ref=harv(help) - Gingerelli, Dain; Michels, James; Everitt, Charles (2011). 365 Motorcycles You Must Ride. Motorbooks. ISBN 9780760334744.
{{cite book}}: Invalid|ref=harv(help) - Schwab, Ulrich (1987). Motorräder : 1970-1987 ; Typen, Daten u. Preise in Deutschland (in German) (1. Aufl ed.). Motorbuch-Verlag. ISBN 9783613011724.
{{cite book}}: Invalid|ref=harv(help) - Tragatsch, Erwin (2000). Berühmte Motorräder (in German) (Spezialausg ed.). Motorbuch-Verl. ISBN 9783613020382.
{{cite book}}: Invalid|ref=harv(help)