F710B Bulkhead Angle

[dwollen89]

I’m guessing I know the end result here, but looking for some feedback. I riveted the aft deck on my fuselage today. Everything went together great. As I was double checking my work, I found a gap between the F710B angle and the longeron. I investigated further to figure out what was going on. I think it’s being held up by the inside radius of the longeron. Not sure how, because I made it to length, radiused the ends and test fit it several times.

Anyway, it’s about an 18 thousandths gap. When I put a clamp on it, it seems to close up ok. I considered a shim, but I don’t have anything that thin. I can probably order something, but not sure that’ll work. Really don’t want to drill out all those rivets, but not sure what other option I have. It’s not so much the time/effort as it is worrying that I’ll cause more issues.

 

[Thierry A]

I’m guessing I know the end result here, but looking for some feedback. I riveted the aft deck on my fuselage today. Everything went together great. As I was double checking my work, I found a gap between the F710B angle and the longeron. I investigated further to figure out what was going on. I think it’s being held up by the inside radius of the longeron. Not sure how, because I made it to length, radiused the ends and test fit it several times.

Anyway, it’s about an 18 thousandths gap. When I put a clamp on it, it seems to close up ok. I considered a shim, but I don’t have anything that thin. I can probably order something, but not sure that’ll work. Really don’t want to drill out all those rivets, but not sure what other option I have. It’s not so much the time/effort as it is worrying that I’ll cause more issues.

Check drawing 21. It calls out radiusing the top side so it will nest against the longeron. Also pointing out that the F710B is to be flush with the top of the F710 bulkhead. I think you're ok.

 

[DeltaRomeo]

Graphic:
v/r,dr

 

[dwollen89]

Thanks for the replies. Just a follow up for anyone that may come across this in the future. I spoke with Vans support and sent in these pictures. I was told this is not a problem and that it’s good to keep the F710 longer to help avoid edge distance issues when the horizontal stab gets drilled. He recommended checking the bolts in the first 5-10 hours of flight. Building on!