Thanks for sorting it Bill. I found pieces of this "out there in internet land". I only concatenated the info for my own reference and hold no proprietary right. The larger prop info (without the comments) was peeled out of Pé Reivers' prop-power xls download. I recommend visiting his site.

It might pay to check with him on that part of it at least.

Thanks again and my grateful acknowledgement to the authors of this info whoever they are.