Papaone, that picture was taken at the Cajun Nationals, and that is a picture of the Allure biplane. The designer Bryan Hebert has been testing his own handmade 3 blade props on the Allure and the Allure Biplane for awhile now. He is getting close to finishing his testing and has been working on lining up a manufacturer to produce them. They are not available yet, but hopefully will be in the near future.