the thing I don't like about a one blade mower with a blade that large, is that in tougher grasses that are more stringy, the blade may not leave as clean a cut, because there are much less rpms.
say we are running at 3600 on the engine and we will assume that the spindle is turning at the same speed as the engine, and we have a 30" blade. so then:
30X3.14X3600= 27,060fpm, but that would not qualify for ansi, so I am assuming that they have got the fpm speed down to at least 19,000fpm at that fpm speed, with a 30" blade, I am coming up with the blade spinning at 201rpm, that can't be right, but I used 19,000fpm/pi/30" that is the right operation yes? if it is 201 rpm, that is a REALLY slow blade, and woldn't not take out gooses grass very easily.