Just saw an article about using plates, englarged airfoil shapes screwed to the wingtips, in RC Report. They talked about how much it helped decrease stall speeds and helped aileron authority without any negative effects on an Ultimate and a small fun fly.

Has anyone tried this with the same success? If I remember correctly, the full size Raven had some sort of wing tip plates. Any feedback is welcome. Thanks!

Rick Glatthaar

Previous short discussion

http://www.rcuniverse.com/showthread...t=stall+plates]

The Blue Max II fun fly plane of the early 1980s was designed in the Parks College (St. Louis) wind tunnel by Jim Allen right before I started going to school there. I was so impressed with it's performance I built one from his plans right after I graduated. The tip plates, in combination with the very thick wing section, make for a very "groovy", responsive airplane. Especially at low speeds. Jim's roommate helped the late Ed Garcher at Midwest in developing the HotsII, which explains the appearance of tip plates on that airplane. Several wild versions of the Hots and Super Hots were tested out in the bean field behind the dorms on campus during the mid '80s. My favorite one was the .20 size version powered by an O.S. 25VF-DF. Had a thrust-to-weight ratio of what seemed like 2 to 1

ChuckN - Interesting, I graduated from Parks in 1959. That's where I got started in U control and free flight competition although I had already been modeling for several years. I visited the campus in the early 80's and noted that not one blade of grass had changed.

Well, it sure looks different now! The Cahokia campus is now closed. All Parks classes are now at the Frost campus.