Hello, I´m sorry, but i don´t speak your language, so I will write english.
I´m from czech republic and in our country we have race with name " Socialistik Dragster" www.socialistik-dragster.cz/ These are sprint races on 201 meters. Now i have bike with engine jawa 350/638 with a lot of modifications with 39 HP. http://socialistik-dragster.cz/gal/img/big_2134.jpg
On next season, I would like to construct new bike with engine IZ Planeta sport 350. Is there someone, who has experiences which adjustments of this engine? I mean bigger cubic capacity, carburateur, race exhaust etc.
Thanks a lot for your answer. Kuba