Joshua's RV-9A Project

Started work on the roll bar (aka cabin frame) today.  Laid out and cut all the angle pieces and plates necessary, and figured out how it all comes together on the fuselage.  With those pieces at the ready, I pulled out the roll bar channels and designated them as fore/aft left/right for reference.  I marked out guide lines at the proper dimensions on the workbench, and went to work fitting.  I had to trim a bit from the inboard top end of each side to get the width correct; once that was done, the splice plate was drilled in place.  With the whole thing clamped and clecoed to the bench, I marked the top and bottom strips and drilled them in place, starting in the middle and working out, clamping between each drilled hole.  The angle drill attachment was necessary here, because of the proximity to the benchtop.  After both strips were drilled to the aft channels, they were removed for a quick deburring and chip removal, with the thought that it would allow for a better fit and more accurate drilling when the forward channels are added tomorrow.

This entry was posted on Friday, July 2nd, 2010 at 11:14 pm and is filed under Cabin & Interior. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.