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- Dec 2, 2008
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A relatively simple repair to a lower right wing and tail post has turned into mostly new empennage (new turtle deck, elevators, vertical fin, rudder), all per the later S-1C plans that I bought from Steen. (I also bought the original set, but it has relatively little useful information).
My question: is +2 degrees the proper angle for the original S1-C? The only rigging data I have for the horizontal stabilizer angle is +2 degrees, and that number came off the later plans, which show a symmetrical airfoil, among other things. I am keeping the flat-bottom wings. Since I also changed the hinges to strap-type and fabricated new elevators and new rear carry-through for the horizontal, the front spacers I took out gave more than +2 degrees. I had to make new ones (shorter) to get the +2 degrees. It will be a major pain to add or subtract washers after the fuselage is covered and flying, so I'd like to get it right the first time. (fyi: one regular plus one thin washer changed the angle from 1.6 degrees to 1.9 degrees. Pretty sensitive!) The airplane flew great before this rebuild project.
Hoping for a knowledgeable answer! tia.
My question: is +2 degrees the proper angle for the original S1-C? The only rigging data I have for the horizontal stabilizer angle is +2 degrees, and that number came off the later plans, which show a symmetrical airfoil, among other things. I am keeping the flat-bottom wings. Since I also changed the hinges to strap-type and fabricated new elevators and new rear carry-through for the horizontal, the front spacers I took out gave more than +2 degrees. I had to make new ones (shorter) to get the +2 degrees. It will be a major pain to add or subtract washers after the fuselage is covered and flying, so I'd like to get it right the first time. (fyi: one regular plus one thin washer changed the angle from 1.6 degrees to 1.9 degrees. Pretty sensitive!) The airplane flew great before this rebuild project.
Hoping for a knowledgeable answer! tia.
