Mostly. I’ve edge-prepped the inboard main and nose ribs (don’t remember the part numbers, and I’m at work) and I’m now trying to measure twice, three times, four times on where to put the holes in the main ribs so that the 2D rule is met for both the ribs and the splice angles. If you’ll remember from last time, there was some concern about being wide of the mark with the flange trimming of HS702 and it looks like the relief holes are a little bigger than they ought to be. what this means is that there’s a very narrow tolerance of where I can drill the HS405 rib to meet the 2D requirements. I’ve been agonizing over it for a couple of hours, and I think it’s still viable, although I can’t be sure.. The safest way to proceed is to replace the part. Duh. Any moron with a fat wallet and a lot of spare time can go through life this way, but I think if the part is still within limits, why not go for it? so that’s what’s going to happen. The 2D rule (guideline) might be smudged by about 1/32 of an inch (on the splice angle, not the rib), but if I put that hole in exactly the right spot, it will probably work fine.
I have a bunch of pictures on the camera, but I have yet to upload them. This will happen soon, I promise.
« Archives on July 11, 2005
HS inboard main and nose ribs prepped
finished HS-702 prep
3.5 hours
Well, after much sweating, looking up parts and gnashing of teeth, it looks like my HS-702 isn’t hosed after all.. The relief notch is in, all the corners are rounded, and all the parts fit together.
Finished trimming HS702’s, double checked angle on the reinforcement brackets on the forward spar, drilled out the last 3 holes on each one after the angle was done.
Countersunk angles, dimpled HS-702’s, then trimmed HS404 (or was it HS408?) ribs. The inboard ones forward of the forward spar. Broke edges (need to find a good deburring thing for tight spots), and stopped. Getting tired.
Next is to finish prepping the ribs, then begin the drillfest.