Just got a 1980 derbi froma friend of mine. (see pic above) it looks as though it has a belt drive, but other than that, im not sure what transmission it has. It looks REALLY cool, and is VERY big. It dwarfs my tomos targa lx. I heard these can go up to 50? mine does a steady 30-35 mph on flat ground. anyboy know anything about this model derbi, like if that is how fast its supposed to go?