[bongodriver]

Originally Posted by JtD

I find that very insulting. I'm not calling you names just because you don't want to "believe" a simple technical fact.For your consideration: 1500 rpm with a 3.1m diameter prop is 240m/s prop tip speed. Combined with 430km/h cruise you're at 270m/s. If you now consider going supersonic (300ish m/s at altitude) is a bad thing, you might find the figure much more believable. Hope that helps, even if my charm is still lacking.

I was eqally insulted by your sarcasm, I don't recall putting my query in any form that called your intelligence in to question.