|Lower Aileron Build I|
|Image shows the spacers clamped or screwed in place. It is essential that everything is flat, straight, and square.|
The aileron ribs were fed thru the spar, then equal spacing was ensured via spacer blocks that were clamped or screwed in place. This was my first attempt using T-88 glue...seems very strong, I glued a couple of scrap pieces of spruce together...then demolished it 3 days later with a hammer...the glue held and the spruce ripped apart first...
The inboard rib is meant to be solid and the spar butt jointed to this rib [no spar aperture], but I decided to route a spar aperture through it, then laminated some 1/16 mahogany ply on the outside of the rib - essentially creating a mortice and tenon joint at this station.
The leading edge was bevelled both sides as per the plans on the table saw, then to achieve the taper from the tip rib to the outboard 'full rib', I temp' fixed the leading edge to some 3/4 ply at the neccessary taper angle, then the 3/4 ply effectively becomes a sled, and I pushed the whole work piece through the table saw. This achieved a pretty accurate trapezoid shape, ready for rounding with a block plane and sander. PLEASE NOTE: If you see that I am mis-interpreting the plans and I am doing something wrong let me know! Thanks.
The spacers here were rebated so as to clear any glue that may ooze from the rib joint.
This image attempts to depict the leading edge taper cut. You can see the leading edge piece is slightly angled on the 3/4 ply, resulting in the taper.