“No bird ever flew nonstop from New York to Tokyo, or raced 15 miles high at triple the speed of sound.                                                                                                   
  Birds do something else.   They do not conquer the air; they romance it..”


Peter Garrison

Jur's RV7 Aircraft Factory
3497 hours
and counting

Skirt brace drilled to the frame with #40 pilot holes.

Then enlarged them to #30. It's safer to drill pilot holes first through the aluminum brace in the steel frame as you may see some wandering holes with the slightest misalignment of the drill.
Being able to enlarge the hole later to #30 using a reamer solves that problem.