Originally Posted by AlpineYoda
Thanks Kyle and Richard for the answers.
I have a small problem with riveting these holes, though. My fuselage was a QB and the holes are not dimpled. I also have no way of knowing if the longerons behind the holes are countersunk.
Dimpling the holes in place using a rivet puller and a pull die is not possible, since I can't dimple with a longeron or other thick piece in place, and trying to dimple two things at the same time for the other rivets likely requires more force than a pull dimple die will be able to administer.
So, how do you rivet these? I could drill them to #30 and pull LP4-3s in each hole, but I would have a few ugly bumps along the skin.
I think you’d be able to tell whether the longeron was countersunk under a non-dimpled hole by closely inspecting it.
Id say it’s unlikely that’s the case (but not impossible).
If this is the case then I’d get in touch with Vans for a solution.
Otherwise id leave the hole at #40 and machine countersink the 032 skin and put an AD3 rivet in there.