Screwed the rod end bearings into the elevator forward spar.
Fitting the right side was very tight. I’m sure theres a proper tool to do this but I ended up using a cresent wrench to twist the bearings. There was no way I could do it by hand.
On the left side I couldn’t even get the threads to engage. On close inspection I discovered that the nut plates were a hair off center from the hole in the spar and reinforcement plate. I enlarged the hole by a 16th being careful not to damage the nut plate. Then I was able to get them screwed in with the cresent wrench. I screwed them in to the measurement called out in the plans.
I temporarily attached the left elevator to the horizontal stabilizer. I checked the clearance of the forward edge at the maximal up and down deflections. I used a digital level to fin the maximal deflection points. I had remove the elevator and backed the rod end bearings out three turns to get the necessary clearance.
I used a clamp to lightly hold the elevator in the trailing position to locate the pivot hole in the elevator horn.
I made a spacing block as called for in the plans and clamped it in place. I then honed down the drill bushing to get a snug fit in the bearing and used it to drill a #30 hole in the elevator.
I enlarged the hole hole to 1/4″ with a step drill and deburred the hole. Then repeated this whole process on the right elevator.
I reattached both elevators to the horizontal stabilizer. I used the appropriate hardware to make up the center hinge. It was extremely challenging getting the washers between the horns and the edges of the bearing. I ended up taping the washers to a small piece of scrap aluminum and using it to shoehorn the washers in place. Then I lightly clamped both elevators into the trailing position.
I measured and marked the location for the control attach hole on the right elevator and drilled a #40 hole and final drilled it to #12.
Tomorrow I’ll make a guide block and match drill the hole to the other horn.
|Today’s Time (hours):||3.0|
|Empennage Time (hours):||189.0|
|Total Time (hours):||189.0|