05-01-2018, 05:15 AM
Hi All, thank you for all the posts. I'm attaching a photo of the on side bulkhead. It does exist and I didn't accurately remember how far up it went, as per Tony's post. What I have now discovered, is that the the bulkhead is there, but is not attached at the sides. It is also over, rather than under the wing backing plate. Chalk this down to just receiving the car, poor eyes and age. I have no idea how it is attached at the bottom. It appears that I need to fabricate new wing backing plates which are attached over the riveted bulkhead. That leaves me with several questions. Chris Gould's book notes that the backing plates are 18 gauge steel and offset with a cut for the bulkhead. So here are my questions to stay with what was originally used.
1. The backing plates are aluminum. Should I use steel or aluminum?
2. What rivets to use? Round head aluminum or counter sunk and flush.
3. How is bulkhead attached at the bottom? I can't find any rivets or welds. There is a flange. But I can't seem to get my head around how the flange holds the bulkhead in the tail.
Best,
Erich