I was asking questions about propellers awhile back and somebody (sorry, don't remember the name of who sent it to me) sent me this program. It's great for doing what if with your props. It has really helped me in getting the right prop for the type of flying I want to do.

I've posted a copy of it on one of my web servers. you can download it at

http://www.infinityok.com/thrusthp/thrusthp.zip


hope this helps