Well the number was supposed to be 203.1 mph or 297.87ft/sec so much for trying to do two things at once....I screwed it up right from the start....
On Waveoscope enhancing the audio on the last speed pass I got a figure of 203.1 mph (326.86Kph) but that is still suspect, still it covered 450' in about 1.5 sec. That is still no accurate measurement methood so I can't make a claim to that speed... I was just trying to make some sense out of it and the prop tip speed would have had to be very high to get there.
Given that the prop pitch speed figures at that rpm I got was in the 140-150 mph range I could not belevie it was possible to out run the prop pitch speed by that much, although I do recall reading that small props often do outrun the prop pitch speed.
This plane should be fairly clean as far as drag goes, as well as flying at a very low AOA...