Hi Fellows,

If one cuts parts of the piston then he has to ballance the crank. In the same manner, if one
rounds the corners of the crank counterweight, then how to maintian the ballance ? Have you
done it or seen some doing those and where I can read more about this tuning approach ?

Comments: After considering the efficiency of different tuning works it seems the most efficient is
to make the pistom lighter. As well in some engines like BGX-1 there is enough "useless" material
on the piston which is also obstructing the intaken mixture and it is better to remove it. But then
the ballance of the whole "team" = Piston&Pin vs. Crank and in the middle the Con-rod is going to
be damaged and vibrations might get too bad. Surely I will try to polish and round every corner of
the crank counterweight and that might go "overkill" the ballance as well. Thus, there should be
some technique to check the ballance, maybe similar to the ones used in big motobike engines.

Thanks in advance for the helful hits.

Regards,
Nick