dbuds2
Well Known Member
Very disappointed with results of drilling cockpit rails (F-816), spacers (F-856), and Front seatback support (WD-808). Ref DWG 72 full pre-punched fuselage.
When I cleco'd the seatback support plates (F-817) to the bulkheads (F-805/806), they pulled away from the bulkheads as soon as the seatback support was cleco'd. I think the support is too narrow because my longerons fit almost perfectly.
There are four pre-drilled holes in the steel seatback support that have to be drilled from inside and up thru all 3 parts. After the first hole was not in a straight line (and close to the edge), I looked over the plans but the view is an off angle perspective. So I mistakenly pressed on.
As you can see from these pictures, and obvious after disassembly, the holes are mis positioned. It's definitely not symmetrically pretty, I don't think it's a structural issue, but, I'm afraid when the bulkheads and support plates are hard riveted, and the AN3 bolts are tightened, the longerons will pulled inward.
If this unacceptable, I probably have to replace the rails, spacers, and the steel support.
When I cleco'd the seatback support plates (F-817) to the bulkheads (F-805/806), they pulled away from the bulkheads as soon as the seatback support was cleco'd. I think the support is too narrow because my longerons fit almost perfectly.
There are four pre-drilled holes in the steel seatback support that have to be drilled from inside and up thru all 3 parts. After the first hole was not in a straight line (and close to the edge), I looked over the plans but the view is an off angle perspective. So I mistakenly pressed on.
As you can see from these pictures, and obvious after disassembly, the holes are mis positioned. It's definitely not symmetrically pretty, I don't think it's a structural issue, but, I'm afraid when the bulkheads and support plates are hard riveted, and the AN3 bolts are tightened, the longerons will pulled inward.
If this unacceptable, I probably have to replace the rails, spacers, and the steel support.