Today I hosted an Open House for our EAA Chapter, Chapter 75. Had about 30 guests view the project from 2-4PM. All were impressed with the RV-12. At the same time had my 2nd Technical Inspection by Jim, one of our chapter Tech Counselors.
After the open house, started deburring the parts for the roll bar. Cleco'd it all together and then tried to trial fit it to the roll bar base temporarily attached to the fuselage. The width of the roll bar was perfect but it would not slide down onto the base unless I used way to much force. I disassembled all and checked the angle of the roll bar flanges where they insert into the base. The angles were a bit short of 90 degrees. Opened the angle on the four roll bars just a bit. Reassembled all (sure are at lot of 3/32" clecos) and then tried to trial fit it again. This time is slid on halfway with just a little push.
One thing I noticed was an uneven surface on the top of the roll bar flange. Thanks, Larry! There were deformations around each hole in the surface. Used a sanding block to remove the majority of the imperfections.
I don't think the tool list includes the required number of 3/32" clecos. I had them, you will need a number of them. Next step is to match drill each hole to #30 and then countersink all of the holes in the top flanges using a #30 x 120 degree countersink for a CS4-4 rivet.
Time Today - 4 hours
