It does sound like tip stall, Bill. Moving the CG forward will only make the plane less maneuverable. As far as what to do about the wing - Did you like anything about it? That is the first question you need to answer before repairing it. Since you already are repairing it, I guess that you will answer yes. I have a THICK wing on an old HOB 2x2 that I keep repairing because it goes up on light lift, is tough, and I have a "so what if it ends up a pile of toothpicks" attitude toward it. (But notice that I keep repairing it - wind eats airplanes ;>) Second - washout will help. But so will flying the plane faster. Try the washout, but don't get carried away. At high speeds the washout will actually cause the tip to lift downward. Since it is tip stalling, you are most likely flying slow and the washout will help more than hurt. Any chance that there was accidental wash-IN? Lastly - I would suggest getting the plans for a better wing or more suitable plane for where you fly. It costs more and there is emotional attachment to the other plane - no matter how bad it flies - but in the long term, you will be happier flying it. A good foam wing is an excellent investment for slope flying cuz wind eats (built-up) airplanes. Good luck. Tom Koszuta Buffalo, NY ----- Original Message ----- From: "Bill Kuhl" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, July 05, 2001 9:26 AM Subject: [RCSE] Tip Stall or - > When a crash is a good thing. Flew my Primera two-meter on a slope > yesterday, and as luck would have it, hit a post on landing. The damage was > just in one wing section, which I started repairing. Noted the wing has a > very large hardwood spar which was good to see, but is also why the wing is > rather heavy, the chord is also rather narrow. The thought occurred to me, > that I have another wing from an Eclipse two-meter electric that might work, > even matching colors. Sure enough the wing would work, although it extended > back past the wing saddle. > > It was really windy by now, but I just had to try flying with the new wing. > Hand tossing showed that the plane flew better on this wing. Was even able > to climb in thermals from a handlaunch. > > About the Tip Stall > > The original wing had a tip stall problem, was thinking of trying to warp > some washout into it. Flying with the new wing the tip stall problem was > very much improved. The new wing had a thicker section, a wider chord which > moved CG forward, and a lower wing loading and lower aspect ratio. My > question is; should I try washout in the original wing when repaired, move > the CG farther forward, or continue to use the new wing. Problem with the > new wing is that it is one-piece. Or maybe I should build a whole new wing. > > Thanks, > > Bill Kuhl > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
