Dave Bernard
Active Member
Until I drilled an extra hole in my HS-702's today.
I've got everything prepped and primed and ready to rivet, but when I clecoe'd the fwd HS spar reinforcements to the HS702s, it looked like I had neglected to drill a hole...
In hindsight I should have realized this wasn't plausible and that something was fitted up wrong (I had the HS810 on upside-down) but for some reason I grabbed my drill and drilled the new holes with the intention of deburring and repriming and being along my merry way.
The result is two new holes VERY close to the holes the rivet will actually go through. At the narrowest point the holes are .037 and .05 inches from the rivet hole.
The optimist in me says that since the Hs702 spar is actually the meat of the aluminum sandwich, the rivet would not be formed on this mistake, but on the 810 and HS405, which might make it OK and a "build on!".
The pessimist doesn't even want to think about new 702's, somehow match drilling with already dimpled skins, etc, etc, etc....
Free dinner to the first tech counselor who gives me the good/ bad news!
DB
I've got everything prepped and primed and ready to rivet, but when I clecoe'd the fwd HS spar reinforcements to the HS702s, it looked like I had neglected to drill a hole...
In hindsight I should have realized this wasn't plausible and that something was fitted up wrong (I had the HS810 on upside-down) but for some reason I grabbed my drill and drilled the new holes with the intention of deburring and repriming and being along my merry way.
The result is two new holes VERY close to the holes the rivet will actually go through. At the narrowest point the holes are .037 and .05 inches from the rivet hole.
The optimist in me says that since the Hs702 spar is actually the meat of the aluminum sandwich, the rivet would not be formed on this mistake, but on the 810 and HS405, which might make it OK and a "build on!".
The pessimist doesn't even want to think about new 702's, somehow match drilling with already dimpled skins, etc, etc, etc....
Free dinner to the first tech counselor who gives me the good/ bad news!
DB