Higher RPMs through reduced rotating mass?

Has anyone out there removed some material from the rod and piston. Being that its a single cylinder I would think that balance isn't a problem. Less rotating mass means quicker revving, and faster acceleration.

Has it been done yet? Did it give any noticable gain in acceleration or top speed? Noise? Vibration? Any other problems?

Thanks,
Adam

I think I will. Seems that it should improve the acceleration some. Maybe allowing the engine to get to its powerband quicker. May help with bogging down when using a 36t sprocket?

So many things I want to try on these little engines. I would like to do one at a time to see what benefits these toys the most. Then again I'm not that patient to do one at a time. Plus two mods individually may not have any measurable impact. Together though they may make a vast improvement.

Anyone that has reduced rotating mass please chime in with your results. Good or bad.

My time and effort are free, and I don't mind doing it. It's fun! I just want to know the performance gains.