RE: Katana 50 by Hangar 9
I finally flew my strenghtened Katana 50 today, after doing all the repairs listed (1) to (6) above. Plane flew really well and withstood all the aerobatics I could throw at it without any problems. Surprisingly, the plane is the same weight as it was before the strengthening (6.75 lbs), which surprised me. Perhaps the new servos are slightly lighter than the previous. Anyway, the new wing is vastly stronger than the old, without apparently any weight penalty. So the fix is highly recommended, although it does involve quite a few man-hours (probably took me a total of 15 to 20 hours).