Not that I have intentions to build something along this line, but I'd like to see it done and for the reasons you have suggested, keeping things simple, affordable and within the means of the less experienced builder. The Lifan sounds like a good candidate for an engine.
Zoran, that could just as well be electrically powered to augment pedal power, don't you think?
SB
Zoran, that could just as well be electrically powered to augment pedal power, don't you think?
SB