Greg: That's an excellent description, and thanks for that. It is thorough and precise.

I wish I could get the same explanation of propellor use with various setup's and why one prop works when another won't. It's not as simple as it is with glow engines. For instance, I can fly my Venus II with an OS 1.20 AX engine using a 15-10 prop and get great performance. I can also jump up to a 16-8 and get similar performance at lower RPM, however, such a change in proportion with E props does not, may not, yield the same performance. In fact, it may just drain the battery while I struggle to keep the thing in the air!

Also, if someone would take the time and write up an explanation of props E props vs. E Slow Fly props, and their applications and usage, differences between them using the same motor/esc combination, that would also be greatly appreciated.

Please, guys, forgive me for putting this in this section but I have asked the same question several times in other areas, using different words, and no one has yet answered the question. Perhaps this is to complex? I just want to fly my foamies/flatties and have fun. So far, that's not happening as I would like it to. 4 minute flights do not cut it for me.

DS.