Starting to lay out parts placement, so I can draw up my fuse. Just going to be a rough drawing.

I started by printing out the tail feathers. I have downloaded a PDF of a RM 19. it has 230 square" of wing. So I needed a little more than double the stab area. I had calculated that if I printed it out (the stab) at 1.45% I would end up with about 84 Square" or about 22% of wing area. So that is what I did and I actually ended up with 90 square" close enough. I will cut the tail feathers from 1/8" sheet balsa. So the stab is 6.25 wide at the root and 18.5" long. The vertical is printed to the same scale.

I naturally want this thing to balance with very little to no lead added. I will be able to shift the engine some while the fuse is still roughed in. I do not have enough parts finished to hang them and see where the cg ends up at and the shift. So going with my best guess and past experience. The cg could be off by this method. We will see.

The engine is a Super Tiger .34 rc @ 12.8 ounces with muffler. Same weight as a OS .35AX, 2 more than a .25. I will likely use a 11x5 prop.

So here is the placement measurements.
I am referencing everything from the back of the prop.

Prop to bottom wing L.E. =8.5"
Wing stagger will have the top wing L.E. 1.5" forward of the Bottom wing L.E.
Prop to Stab L.E. will be 25" and T.E. of bottom wing to stab is 8.5"
Prop to T.E. of elevator or fuse end is 31"

Ready to cut tail feathers now.

I am really enjoy working at this desk vice that wiggly card table. I am feeling more productive.

Ken