IowaRV9Dreamer
Well Known Member
I'm slightly confused, which is pretty good at this point...Can someone help me???
I'm merrily follwing the instructions building the middle of the fuselage and I've assembled the skeleton consisting of seat ribs, baggage ribs, center section bulkhead, and F-705 bulkhead. So far so good.
I see that each set rib is supposed to have 2 bolts in it to attach to the aft side of the center section bulkhead. There are no holes in the flanges, so I figure I should drill some. As I'm picking up my drill, I see the following note on section A-A of DWG 25: "IF HOLE IN RIB FLANGE IS MISALIGNED WITH HOLE IN F-904, CAREFULLY RUN DRILL BIT THRU HOLE"
This makes me stop and think. They want me to be careful running a dril but thru the spar bar. Probably so I won't mess it up and cause a weak spot. I guess they might mean "use a drill bit by hand to slightly widen out the hole". Problem is I have no holes to widen out - I have to drill these holes (#12 seems to fit nice in the spar). Will it be OK to drill if I am "careful?"
Of course, the manual never mentions any of this, but I'm happy that I'm at least thinking about it.
Is it OK to just have at it and drill the holes using the spar as a drill guide? I can't see how to drill them not in assembly, since the spar bars are so thick. Maybe I'm too cautious... what have others done?
I'm merrily follwing the instructions building the middle of the fuselage and I've assembled the skeleton consisting of seat ribs, baggage ribs, center section bulkhead, and F-705 bulkhead. So far so good.
I see that each set rib is supposed to have 2 bolts in it to attach to the aft side of the center section bulkhead. There are no holes in the flanges, so I figure I should drill some. As I'm picking up my drill, I see the following note on section A-A of DWG 25: "IF HOLE IN RIB FLANGE IS MISALIGNED WITH HOLE IN F-904, CAREFULLY RUN DRILL BIT THRU HOLE"
This makes me stop and think. They want me to be careful running a dril but thru the spar bar. Probably so I won't mess it up and cause a weak spot. I guess they might mean "use a drill bit by hand to slightly widen out the hole". Problem is I have no holes to widen out - I have to drill these holes (#12 seems to fit nice in the spar). Will it be OK to drill if I am "careful?"
Of course, the manual never mentions any of this, but I'm happy that I'm at least thinking about it.
Is it OK to just have at it and drill the holes using the spar as a drill guide? I can't see how to drill them not in assembly, since the spar bars are so thick. Maybe I'm too cautious... what have others done?