I´m sorry that I can´t speak or write your language. So I have to write my posts in german or english! I hope that will not be a problem for you.
But lets go over to my youngest project!
It´s not a complete zelfbouw. The basic is a Lucky7. I spend a lot of time and money into the engine to make it faster. But the result was mad. And there was no run on the track where nothing brokes.
I searched for an engine that runs well and everytime! I don´t want to build my own frame, so I must search a small engine. And here it is.

It´s from a Zündapp 422. It has 50cc and at the moment only 1.5hp. I hope that it´s possible to get more power out of it!
Has anyone seen that engine in the minibike scene or know how much hp is possible??
Greets Roman
The last picture with the chinese engine by the way!


