Tomos racing machine
The Tomos racing machine was the only racing motorcycle from a Yugoslav manufacturer that took part in the motorcycle world championship.
Beginnings
As early as 1960, Tomos developed the air-cooled road racing motorcycle D5 with 50 cm³ displacement for private drivers in the smallest displacement class. The successor model D6 from 1967 was air-cooled, the D6 from 1968 water-cooled. In the 1969 Grand Prix motorcycle racing season was Gilberto Parlotti reach the sixth place on a water cooled Tomos D6, 1970 in the very first round of the Grand Prix of Germany (on the Nürburgring - Nordschleife ) drive to third place and reach the ninth place overall in this class.
DM GP
In 1978 Tomos first developed a completely self-supporting monocoque frame made of carbon fiber reinforced plastic for the motorcycle world championship . The rear wheel was guided in a conventional box swing arm made of steel, the front fork was supplied by Marzocchi . However, the inferior engine performance as well as the technical and financial possibilities of Tomos stood in the way of success. In 1981 the racing motorcycle project was discontinued.
| Technical data (model 1978) | Tomos DM GP |
| drilling | 40 mm |
| Hub | 39.6 mm |
| Displacement | 49 cc |
| Compression ratio | 14: 1 |
| Carburetor | 30 mm bing |
| power | 17 horsepower at 15,000 min -1 |
| Empty weight | 53 kg |
| wheelbase | 1240 mm |
| trailing | 70 mm |
| Steering head angle | 62 degrees |
literature
- Siegfried Rauch: Famous racing motorcycles - 150 old and new racing machines for Grand Prix use . 2nd Edition. Motorbuch Verlag, Stuttgart 1980, ISBN 3-87943-590-1 .
Web links
References and comments
- ↑ tomos-racing.si ( Memento from September 27, 2013 in the Internet Archive ) Spare parts list (accessed on September 24, 2013)
- ↑ The Kreidler had at that time 22.5 hp at 17,000 min -1
- ^ Rauch, p. 238
- ^ Rauch, p. 239