Brief Description: Right Main Spar - Wing Attach Blocks
"I have now shelved the Left Vee Stab as I am waiting for the correct skin to arrive from Oshkosh USA. So the next job is to start the wings.
The first step is to identify the parts required and extract them from storage. This is where I am really happy that I took the pre machined angle package for the waiex. Sonex Aircraft offer this and it does save a great deal of time and fabricating. What is also great about this option is that they bend the angles to the required angles for you where needed. Just find the correct part number and start working with it assembly what is required. Neat.
The wing attach blocks are made by myself from a solid bar of Aluminium about 1.5 inches by 1 inch. It is then cut to lenght about 1.5 inches as well and bevelled on one edge to fit the inside angle of a 90 degree angle bracket for the spar. some drilling is then required in 2 directions through the block to be able to aatach it to the spar via a bracket. The other hole is then used to be able to insert the locking pins (4 in total) through both the Left and right spar for flight. If you want to remove the wings for storage etc then it is these pins that have to come out again, Critical bit of engineering. I have tried to be as accurate as possible but it is slow gonig with the drill and bits and marking out, worthwhile though.
I then found al the main spar web items and doublers etc that make up the central spine of each wing. The wing brackets then mount off the spar and then the skin wraps around the ribs and spar together for the wing to get its shape.
I have just layed up a dry fit of the parts to make sense of the layers of spar webs. There are approximately 4 layers and then a Top Spar cap and a Bottom spar cap to give it longitudinal stability alongthe spar."
