Back in the shop over the past few days and I built the stab. For some reason I really enjoy building the stab. I know once you have read this you will think there is are alot of easier ways to get the same result. But, for me, I like to build this structure even though I am sure it is over built. I have an old one that has a large crack in it that can't be used. I keep it around as a template, you can see it in the first few pics. I sure makes it nice when there is no plan available to have a part to work from.
I use a flat stab just over 1/2" thick. Rounded LE and TE. The span is 29", 4 1/2" root and 2 1/2" tip chord. As with the main wing the stab LE shape must be consistent. I mold the LE out of 1/16" balsa. I use a brass tube attached to a piece of wood. Then wet and wrap as normal. Once the mold has dried I sand a trim the piece from the mold buck. When removing the piece it can tend to curve up a bit. Then I attach it to a piece of 3/32" or 1/8" balsa as a backing piece to keep it straight. I attach the backing piece to the table while attaching the mold to it making sure it stays in place until the CA has fully cured. This will insure it stays straight.
Next I build the trailing edge. I like to build in the hinge slots as I build the TE. I start by attaching the straight edge to the table. Then I attach a piece of 1/4" balsa to the table against the straight edge. Then I glue on pieces 1/32" balsa leaving gaps for the hinges. Next pass over the 1/32" balsa with a sanding block to make sure they are same thickness as the hinges. Then glue down another piece of 1/4" balsa. The TE is complete.
Next I layout the LE pieces and complete the frame. From there I trace and cut the center section sheeting for the top and bottom. Next I have to install the ribs in the sheeted area. From there I install what will be cap strips along the top prior to the ribs. I put them in first so I can get them nice flat against the upper edge. Then I flip it over for the rib install and the last of the cap strips. Trim the edges and clean up any rough edges. Next, round the TE.
It's all finished up. The weight is good.
Just for grins I went back and counted the number of pieces used to make this thing, 96. Yes, it's true, I am near the edge of insanity.
The stab went together pretty much as planned. The elevators are a different story. I worked for several hours on Sunday and 3 attempts yielded WAY less than desirable results and alot of wasted time and balsa. I day or two off is in order to come back with a clear mind and get them built correctly.