Just finishing up the forward fuselage tasks before I can disassemble everything for preparations to rivet.
Got the F-724 and F-722 ribs installed and match drilled. Then I put the F-750 aft baggage covers on. The prepunched holes in the F-750 cover don't line up with the F-722 horizontal rib.
Here is a picture of the overall area.
A closeup of 1 of the 3 mismatched prepunched holes.
It is like this on both L & R sides and all of the prepunched holes are similarly off by about 3/32".
An LP4-3 pull rivet will eventually connect these, so they will get drilled out to 1/8".
Curiously, DWG 25, Detail D & E have a note about these holes in the F-722:
"Predimple for later installation of baggage side covers"
Why predimple if the rivet callout isn't for a flush rivet?
Should I just go ahead and drill these out to #30, or do I really need to be concerned about the mismatch? Everything else lines up perfectly. It doesn't appear to be particularly structural.
Looking forward in the plans, I love the next paragraph...
"Before the F970 forward side skins can be riveted to the fuselage framework, there is a laundry list of small tasks that must be completed. You may have done some already. If not, complete them now."
That narrows it down!
Anyone have a more complete list? I'm hoping to get the prep work done before the Labor Day holiday weekend.
Got the F-724 and F-722 ribs installed and match drilled. Then I put the F-750 aft baggage covers on. The prepunched holes in the F-750 cover don't line up with the F-722 horizontal rib.
Here is a picture of the overall area.
A closeup of 1 of the 3 mismatched prepunched holes.
It is like this on both L & R sides and all of the prepunched holes are similarly off by about 3/32".
An LP4-3 pull rivet will eventually connect these, so they will get drilled out to 1/8".
Curiously, DWG 25, Detail D & E have a note about these holes in the F-722:
"Predimple for later installation of baggage side covers"
Why predimple if the rivet callout isn't for a flush rivet?
Should I just go ahead and drill these out to #30, or do I really need to be concerned about the mismatch? Everything else lines up perfectly. It doesn't appear to be particularly structural.
Looking forward in the plans, I love the next paragraph...
"Before the F970 forward side skins can be riveted to the fuselage framework, there is a laundry list of small tasks that must be completed. You may have done some already. If not, complete them now."
That narrows it down!
Anyone have a more complete list? I'm hoping to get the prep work done before the Labor Day holiday weekend.
