Speed of sound and fans
Hi Bob
I'm really going to take a look at a way of confirming flow rates, there are a couple of things that I'm curious about 216 vs 235/261 pumps and the effect of the flex type radiator hose vs the smooth or formed hoses. We used use some relatively cheap flow meters on some of the big mechanical projects I did in my consulting days.
Next step is to bring the original 216 engine down from the loft of the barn so that I really can start comparing dimensions to figure out how this really should work.
Does your Pat 11 have the mini shroud meant to control the sonic boom at the tip of the fan blades? Just kidding, at max RPM the tips of the blades are only moving at Mach .2126 only sounds like they are breaking the sound barrier. But does your truck have the shroud pictured below?
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