I'm planning to convert a Hiro 125 engine from the end of the 70's into a trial engine. Why? Who knows!
The engine has six speeds and a reed valve. It's from an Ancillotti 125 moto cross bike. I have the Ancillotti frame too but it's too heavy and wide to converted into a trial frame. So the frame would be some monoshock (or twinshock) trial frame.
Any opinions, advices, ideas etc.?