LettersFromFlyoverCountry
Well Known Member
I'm confused by Section 13, step 5 of the RV-12 instructions. First, of all, as shipped from the factory, why aren't both spars mirrors of each other? The pre-riveted rib doublers aren't the same for both.
And as the schematic shows on this step, you're working on the forward side of one and the aft side of another.
This step tells you to rivet remaining open holes in the indicated doublers, basically three rivets on each flange.
But, at least on the underside of the farthest left doubler with open holes, doing so interferes with any rivet that would go in the opposite side doubler.
Maybe this isn't a problem in most of the doublers, but it is for the one farthest outboard (of the ones we're talking about in this step). The pulled rivet for the doubler in this step, will eventually interfere with trying to put a rivet in the flange holes for the doubler that's on the other side.
Or, if one rivet is to tie the two doublers together (and I'm positive that that's not the case), you would have to have a spacer on the back side AND a much longer rivet.
As you move inboard, there sees to be a bigger gap between the spar web and the doubler flange
Very weird
And as the schematic shows on this step, you're working on the forward side of one and the aft side of another.
This step tells you to rivet remaining open holes in the indicated doublers, basically three rivets on each flange.
But, at least on the underside of the farthest left doubler with open holes, doing so interferes with any rivet that would go in the opposite side doubler.
Maybe this isn't a problem in most of the doublers, but it is for the one farthest outboard (of the ones we're talking about in this step). The pulled rivet for the doubler in this step, will eventually interfere with trying to put a rivet in the flange holes for the doubler that's on the other side.
Or, if one rivet is to tie the two doublers together (and I'm positive that that's not the case), you would have to have a spacer on the back side AND a much longer rivet.
As you move inboard, there sees to be a bigger gap between the spar web and the doubler flange
Very weird
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