WingsOnWheels
Well Known Member
Ok, the manual calls for the longerons to be flat (square) to the jig at F604 and F605, this makes perfect sense. However, it states that the inside of the longeron should be shimmed (as required) at F606, F607, and F608 to match the contour of the bulkhead sides.
So if I'm understanding this correct, the longeron is twisted at the firewall to flat through F604 - F605, then twisted slightly at F606 - F608 and then is flat again at F610-612?
That doesn't make a whole lot of sense to me, so maybe I am misunderstanding. If the longeron is twisted at those bulkheads, what is going to maintain that twist once the fuselage is removed from the jig? I know the shim will probably only be 1/16" or so, but it just seems odd.
So if I'm understanding this correct, the longeron is twisted at the firewall to flat through F604 - F605, then twisted slightly at F606 - F608 and then is flat again at F610-612?
That doesn't make a whole lot of sense to me, so maybe I am misunderstanding. If the longeron is twisted at those bulkheads, what is going to maintain that twist once the fuselage is removed from the jig? I know the shim will probably only be 1/16" or so, but it just seems odd.