Does anyone remember all about the first cordless (battery-operated) circular saws from the 1980s and 1990s?
The very first ones ranged in sizes from 3-3/8" to 6-1/4". The mini trim saws only spun about 1000 RPM compared to most 7-1/4" corded circular saws whose usual speeds were from 4500-6000 RPM.
I'd like to think the saws that use a 3-3/8" diameter blade should actually spin about 10,000-20,000 RPM to give the same approximate tip speed as the larger saws. However, I don't know if 15,000+ RPM would exactly be fit for a 9.6V or 12V battery pack.
~Ben