what do others (including builders) think of pop rivets going into FRP ribs? Is the fibreglass strong enough to hold a rivet over time...
Also, the stabilator appears to have all the FRP ribs epoxied to a single metal torque tube (is that the right term?). Again, it seems to me in the long term that epoxy might lose adhesion to the metal due to uneven expansion/contraction.
There's 6 ribs per side, after glassing as per instruction, pop a rivet in the second and third from the outside on the vertical face facing the rear (where the tube is in compression), and 4 rivets equally around the circumference on the outside one (number 6). Do not rivet the inside 3. That will be enough.