BAS (Boulder Aeromodeling Society) Presentation Gallery PowerPoint Presentations Presentations are in Microsoft PowerPoint format and require either Microsoft PowerPoint or the PowerPoint Viewer. The Microsoft PowerPoint viewer is a free download from the Microsoft Download Center. Should you have trouble playing a presentation on your system, because it opens in a browser window, I suggest that you right click on the link and select "Save target as..." which will download the file to your system. BAS Float Flying  (4.2 Meg) Documents Documents are in PDF format and require the Acrobat Reader to view. Introduction to electric flight Electric Flight 101 The BAS presentation page is a sub page on www.rchelibase.com.  Enjoy - Al Coelho E-Mail me