Tuesday, February 1, 2022

Right Wing - Drilling Ribs

Here we go again!  I pulled the dusty right wing ribs off the shelf and clecoed them to the spar to match drill.  The part that is eventually going to bite me here is the fact that the plans only show a left wing, so there is a little bit of mental juggling to do to make sure you get all of the ribs oriented correctly (meaning if the plans show a rib with an "R" or "L" designation for the flange direction, you have to remember to reverse it for the right wing). 


And of course after the ribs were assembled and drilled for the front and rear spars, then everything came apart again.  You'd think I'd be used to it by now, but it's still kind of depressing how quickly things go from looking like there is progress to just a pile of parts again!  I deburred all of the freshly drilled holes.  Lastly, I grabbed the wiring conduit drilling template I had made for the left wing ribs and marked each rib for the conduit location.  I pilot drilled the holes, but stopped at that point.  Next time I'll pick up by drilling the 3/4" conduit hole and then checking that all of the rib edges are deburred well enough (did that task last summer thankfully!), following by cleaning and prepping for primer.  I'm truly stuck at this point since the ribs have to get primer at this stage, so I'm going to have to just bite the bullet and try to blast the heater in the garage for a while this weekend to get things warm enough.  I've found that the primer still lays down well enough in the cold temperatures, but the drying time is the show stopper.  Whereas the primer will flash off in minutes in the warm temps (60-70's) so I can spray the second coat very quickly after the tack coat, in the cold temps it can take 30-60 min for the first coat to dry.  That really extends a priming session when there are 15 ribs to do!