05-29-08 - Finishing Left Aft Spar


Getting ready to match drill the doubler plate to the aft spar.  The holes around the alieron pushrod holes are laser marked on the doubler.  The outer holes are not predone by sonex so there isn't a left/right part until fabrication.


I lined up the two wholes that match up with the rib holes and clamped the doubler.



Match drilled to #30.  I move the doubler to the aft side of the spar channel to match drill the rib holes and drill the other two holes.



Marking and drilling the holes oposite the rib holes.



Here I've clecoed the doubler to the back of the channel to match drill the rib holes.



All but the rib holes updrilled to #30.



The finished doubler.



The holes in the aft spar splice plate are used to match drill the channel.  I put a 2x4 block under the joint to keep the channels aligned - the flange bends clamp the board perfectly.



Some of the holes drilled to #40.  The rest of them will get drilled straight to #30.



All of the holes driled to #30.



Drilling the angle used to attach the tip rib to.



Drilled to #30, deburred and scotchbrited.




< Last Home Next>