Rudder top 3 aft holes

The aft three 3/32 holes in the upper edge of R-901-L and R-901-R should be drilled to #30 and dimpled. These holes will later be used to attach the R-909 rudder tip. While the holes could be opened up to #30 when drilling the tip to the rudder, it would be nearly impossible to dimple the skins because the rudder is so narrow at that location.
These?

Rudder holes

Probably easier to dimple before the skins are riveted to the ribs, however there are some "tight quarters" dimpling tools.
http://www.cleavelandtool.com/Tight-Fit-Dimpling-Fixture-3_32/productinfo/DIE4263DF/#.VyE605XmqUk
I dimpled mine for #6 screws and used nutplates inside the fiberglass tips. I used a yoke with no hole to rivet the nutplates.

terrye said:

Probably easier to dimple before the skins are riveted to the ribs, however there are some "tight quarters" dimpling tools.
http://www.cleavelandtool.com/Tight-Fit-Dimpling-Fixture-3_32/productinfo/DIE4263DF/#.VyE605XmqUk
I dimpled mine for #6 screws and used nutplates inside the fiberglass tips. I used a yoke with no hole to rivet the nutplates.

Click to expand...

Hey Terry,
Well that's a good idea. I can't see the need for the tip to ever come off, has anyone "glued" this in? Sikaflex? Structural panel bonder? Etc. Clean no fastener look.