kiljoy
Well Known Member
Okay I'm stumped on this one maybe I just don't get it:
Step 13 on 26-11 has you back rivet on the center section lower doublers which go like so:
Later step 7 in 28-02 has you dimple all of the #30 holes in the forward skins minus a few in the front. The picture doesn't show the #30 holes in the skins that coorespond to the same ones in the main skin you riveted the doublers to in 26-11 but they are there and are #30s. So I dimpled them.
Fast forward to step step two on 29-02. We connect the two half of the front of the fuselage by overlaying the front bottom skins on top of the main skin. When I do that all of the holes mentioned above have already been riveted to a doubler so there's no way to rivet those holes from the top skins through the main skin and then the doubler.
Was I not supposed to dimple the holes in the front skin? It's 40 rivet holes. I can't imagine, especially there where the wings attach that you wouldn't want those extra anchor points right?
My thought is (if I'm thinking correctly) to drill out all of the rivets from the doubler plate, cleco the doubler back onto the main skin with 5/32 clecos (the center of the doubler plate), slide the front and back half together again then pop rivet (when the time is right) the front skins, main skin and doublers. I say pop rivet because those holes lie underneath the bottom flanges of both wing box bulkheads and you can NOT get a bucking bar or backrivet plate in there. I've checked clearance of a pop rivet through the hole and it will fit.
- Kilroy
Step 13 on 26-11 has you back rivet on the center section lower doublers which go like so:
Later step 7 in 28-02 has you dimple all of the #30 holes in the forward skins minus a few in the front. The picture doesn't show the #30 holes in the skins that coorespond to the same ones in the main skin you riveted the doublers to in 26-11 but they are there and are #30s. So I dimpled them.
Fast forward to step step two on 29-02. We connect the two half of the front of the fuselage by overlaying the front bottom skins on top of the main skin. When I do that all of the holes mentioned above have already been riveted to a doubler so there's no way to rivet those holes from the top skins through the main skin and then the doubler.
Was I not supposed to dimple the holes in the front skin? It's 40 rivet holes. I can't imagine, especially there where the wings attach that you wouldn't want those extra anchor points right?
My thought is (if I'm thinking correctly) to drill out all of the rivets from the doubler plate, cleco the doubler back onto the main skin with 5/32 clecos (the center of the doubler plate), slide the front and back half together again then pop rivet (when the time is right) the front skins, main skin and doublers. I say pop rivet because those holes lie underneath the bottom flanges of both wing box bulkheads and you can NOT get a bucking bar or backrivet plate in there. I've checked clearance of a pop rivet through the hole and it will fit.
- Kilroy