Gavin wrote: > >Well Mark, I've got my plans now, and after all the to and froing about airfoils can you say conclusively which should be the best fit for the KR2S built from scratch?? I've read about the 5048 and agree it's probably the best. How many are flying and how is the performance shaping up?? Has there been any change from the 5048 section lately to anything more suited??<<
>From a purely physical standpoint, the taller AS5048 spar is slightly more difficult to make because the vertical pieces are tapered. A jig made from blocks screwed to the table makes that simple though (keeps them from sliding around while glueing), and might take you an extra 10 minutes. "Best fit" in all other ways I'd say the AS5048. Same stall speed, but higher top end. I don't know why anybody would use the RAF48 any more, but whatever floats your boat... See more airfoil details at http://www.krnet.org/as504x/ . There has been no further development. Gee, wasn't that enough? As far as I know, only Troy Pettway and Dean Selby are flying the new airfoils now. That is about to change significantly when the "new wave" gets here! Troy's wild about the new airfoil, but Dean's plane never had the RAF48 so he wouldn't be able to give you a comparison. Mark Langford, Huntsville, AL N56ML at hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford
